Andrews Communications - Reflecting Telescopes

GSO factory-authorised factory-direct importer with 2-year
factory-backed genuine Australian warranty!! GSO advises
many parts costs are increasing. Therefore, we suggest you
consider buying GSO products sooner, rather than later...

Due to the hard Greater Sydney coronavirus lockdown the shop
is closed to ALL walk-in sales!

We do have kerbside "click and
collect". Our telephone & email
sales continue as per normal...

The shop will be closed for our
one week holiday from 4:30pm
Friday, 20th August. Re-opens
at 9am Monday, 30th August.

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New GS-630 now...A$499
(was A$599)
Yes, 8" F/5 Newtonian OTA!

LIMITED TIME OFFER!

GSO's all-new 6"~10" f/12
Classical Cassegrain OTAs
are outstanding telescopes
...especially for planetary &
planetary nebula viewing!!

Regarded as world's best quality telescopes at most reasonable prices!
Yes, if you can find better telescopes at similar prices, go for it, hi!

WE ARE AUSTRALIA'S GENUINE TELESCOPE EXPERTS!

Please check with us a day prior if you wish to purchase a large telescope
personally from our store, so we can ensure it will be in our store for you.

Andrews Communications is Australia's leading GSO importer!
Guan Sheng products ship same day or next day from us!

Please order by phone; 02 9688 4301/9636 9060/9896 8972,
by email; radioandrews@hotmail.com or by mail;
P.O. Box 240, Pendle Hill, NSW, 2145.

Updated 06-08-21

GSO super-high grade Dobsonians BEYOND AMAZING VALUE... Bonus Moon filter with all our GSO Dobsonians New heavy duty tension-adjustable 8"~12" Dobsonians! THREE (3) GSO Plossl eyepieces and SV30 30mm 2" eyepiece included with our 10" & 12" GSO Dobs! Please check with us the day prior if you wish to purchase a large telescope personally from our store, so we can ensure it will be in our store for you. BONUS SV30 30mm 2" eyepiece w/GSO 10"/12" Dobs!
Newest model! Guan Sheng GS-580 6" f/8 150mm x 1200mm DOBSONIAN with BONUS Moon filter! First-grade Dobsonian! Only...$499 AUD (3 in stock @ 06-08-21) PLENTY IN STOCK! TWO GSO PLOSSL EYEPIECES! First grade 6" (150mm x 1200mm) Dobsonian reflector with truly outstanding 1/12th surface wave specification BK7 mirrors. Resolving power; 0.76 arc second. Limiting magnitude; 12.0. Includes a straight-thru 6 x 30 finderscope, 1.25" Crayford style focuser, a 35mm long 1.25" focal extension tube, the BONUS Moon filter and premium GSO 9mm and 25mm 1.25" Fully Multi Coated (FMC) Plossl eyepieces! Yes, you may swap the BONUS Moon filter for a GSO ND (Neutral Density) filter of your choice at the time of the Dobsonian sale... GSO Dobsonians have knurled collimation knobs fitted to their primary mirror cell. This new feature allows much easier and more precise adjustment of the mirror cell ************************* SHIPPING & INSURANCE NOTES Insurance cover for goods in transit is available from us for only $2 per $100 value of goods. Please advise us if you require this option when ordering. Please consider insurance because we are not responsible for loss of parcels or damage sustained by parcels as the carrier is responsible! We do pack well! If your order (e.g. telescope or binocular) is damaged in-transit by the freight company then you must claim on the freight company, not ourselves!! Of course, if you have paid us for insurance then you simply claim on us. We are quick at resolving damage claims, compared to many freight companies. Please do NOT write <fragile> on anything you send to us as doing so greatly increases the risk of damage. Please try to "double-box" all products sent to us.	Newest model now in stock! Guan Sheng GS-680 8" f/6 200mm x 1200mm DOBSONIAN with BONUS Moon filter! First-grade Dobsonian! New low price! Only...$699 AUD (was A$799) (25 in stock @ 06-08-21) PLENTY IN STOCK! Why wait for ages to purchase elsewhere? THREE GSO PLOSSL EYEPIECES!! New adjustable tension design! First grade 8" (200mm x 1200mm) Dobsonian reflector with truly outstanding 1/12th surface wave specification BK7 mirrors. Resolving power; 0.58 arc second. Limiting magnitude; 14.0. Includes a right-angle correct image 8 x 50 finderscope, 2" dual-speed Crayford style microfocuser with 10:1 fine focusing, 2" to 1.25" adaptor, fan, a BONUS Moon filter and premium GSO 9mm, 15mm and 25mm 1.25" Fully Multi-Coated (FMC) Plossl eyepieces. Yes, WE include three premium GSO Plossl FMC eyepieces, not just two! Above photo is indicative only. Yes, you may swap the BONUS Moon filter for a GSO ND (Neutral Density) filter of your choice at the time of the Dobsonian sale... Newest model features new larger smoothly-sculpted black plastic side bearing knobs for comfortably adjusting optical tube tension (our suggestion). Loosening these knobs also allows the optical tube to be slid forward or backward, so as to set the optimum balance point. Discontinued/old model had sharp-edged aluminium adjustment knobs. Newest model GSO Dobsonians have knurled collimation knobs fitted to their primary mirror cell. This new feature allows much easier and more precise adjustment of the mirror cell
Newest model now in stock! Guan Sheng GS-880 10" f/5 250mm x 1250mm DOBSONIAN with BONUS Moon filter! First-grade Dobsonian! Only...$999 AUD (17 in stock @ 06-08-21) PLENTY IN STOCK! THREE GSO PLOSSL EYEPIECES PLUS BONUS SV30 2" EYEPIECE! BONUS SV30 2" EYEPIECE! THREE GSO PLOSSL EYEPIECES PLUS BONUS SV30 2" EYEPIECE! Competitor includes only 2 Plossls (no 25mm Plossl) & SV30 eyepiece New adjustable tension design! First grade 10" (250mm x 1250mm) Dobsonian reflector with truly outstanding 1/12 surface wave BK7 mirrors and 2" focusers and 2" to 1.25" adaptors. Resolving power; 0.49 arc second. Limiting magnitude; 14.5. Includes a right-angle correct image 8 x 50 finderscope, 2" dual-speed Crayford style microfocuser with 10:1 fine focusing, 2" to 1.25" adaptor, fan, a BONUS Moon filter and premium GSO 9mm, 15mm and 25mm 1.25" Fully Multi-Coated (FMC) Plossl eyepieces. Yes, WE include three premium GSO Plossl FMC eyepieces (not 2) PLUS an SV30 30mm 2" eyepiece!! Yes, you may swap the BONUS Moon filter for a GSO ND (Neutral Density) filter of your choice at the time of the Dobsonian sale... Newest model features new larger smoothly-sculpted black plastic side bearing knobs for comfortably adjusting optical tube tension (our suggestion). Loosening these knobs also allows the optical tube to be slid forward or backward, so as to set the optimum balance point. Discontinued/old model had sharp-edged aluminium adjustment knobs. See photo of ASDX above! Newest model GSO Dobsonians have knurled collimation knobs fitted to their primary mirror cell. This new feature allows much easier and more precise alignment of the mirror cell. ************************* The leaflet included in (twice- discontinued) GSO very old-style Dobsonian telescope base boxes showing thin needle roller bearings and steel sheets incorporated within a rotating base is out-of-date. In place of those bearings and steel sheets, teflon pads are fitted to those (once-discontinued) Dobsonian telescopes' bases. In place of those teflon pads, the very newest (current) Adjustable tension Super Deluxe (ASDX) GSO Dobsonians now have larger needle roller bearings, with their bases incorporating thicker steel plates!	Newest model now in stock! Guan Sheng GS-980 12" f/5 300mm x 1500mm DOBSONIAN with BONUS Moon filter! First-grade Dobsonian! Super low price! Only...$1299 AUD (was A$1499) (14 in stock @ 06-08-21) PLENTY IN STOCK! Why pay more elsewhere? THREE GSO PLOSSL EYEPIECES PLUS BONUS SV30 2" EYEPIECE! BONUS SV30 2" EYEPIECE! THREE GSO PLOSSL EYEPIECES PLUS BONUS SV30 2" EYEPIECE! Competitor includes only 2 Plossls (no 25mm Plossl) & SV30 eyepiece New adjustable tension design! First grade 12" (300mm x 1500mm) Dobsonian reflector with truly outstanding 1/12 surface wave BK7 mirrors and 2" focusers and 2" to 1.25" adaptors. Resolving power; 0.38 arc second. Limiting magnitude; 14.9. Includes a right-angle correct image 8 x 50 finderscope, 2" dual-speed Crayford style microfocuser with 10:1 fine focusing, 2" to 1.25" adaptor, fan, a BONUS Moon filter and premium GSO 9mm, 15mm and 25mm 1.25" Fully Multi-Coated (FMC) Plossl eyepieces. Yes, WE include three premium GSO Plossl FMC eyepieces (not 2) PLUS an SV30 30mm 2" eyepiece!! Yes, you may swap the BONUS Moon filter for a GSO ND (Neutral Density) filter of your choice at the time of the Dobsonian sale... Newest model features new larger smoothly-sculpted black plastic side bearing knobs for comfortably adjusting optical tube tension (our suggestion). Loosening these knobs also allows the optical tube to be slid forward or backward, so as to set the optimum balance point. Discontinued/old model had sharp-edged aluminium adjustment knobs. See photo of ASDX above! Newest model GSO Dobsonians have knurled collimation knobs fitted to their primary mirror cell. This new feature allows much easier and more precise alignment of the mirror cell. *********************** We supply excellent high-quality GSO telescopes at better-than-fantastic prices, along with a GSO factory-backed 2 year warranty. We also offer our full after-sales service support to ensure you enjoy many years of happy observing. You can certainly shop with greater confidence at Andrews! Est. 1976. We have sold well over 3,000 GSO telescopes and consistently receive glowing reports regarding their truly outstanding performance! Compare!**
Important notes re GSO mirrors... GSO mirrors are guaranteed diffraction limited. They achieve the theoretical limits of resolution for their respective surface areas. GSO Newtonian Dobsonian telescopes have BK7 type glass paraboloidal mirrors and are precision figured and polished to an absolutely outstanding 1/12 (or better) surface wave specification! I have witnessed this exacting and time consuming process numerous times, along with the confirming surface wave error printouts from GSO's three laser double-pass interferometers, during my many visits to the GSO factory in Taiwan. Lee says most competitors don't visit any overseas factories, ever! The high industry standard for mirror surface wave specification is 1/10 wave, yet very, very few telescope manufacturers regularly achieve it. Due to continuing and dedicated quality improvements at GSO, more and more optical accessories from GSO are now achieving an amazing 1/16 surface wave spec.! GSO guarantees no more than 1/12 surface wave error. Outstanding! We know of no other manufacturer achieving such high quality levels at similar pricing...	OPTICAL DESIGN NOTES Ritchey-Chretien astrographs are generally regarded as being the best design for astrophotography. Ritchey-Chretien (RC) optical designs are generally regarded as being optically superior to Schmidt-Cassegrain (SCT) designs and "edge" corrected SCTs due to their resulting flatter field. Schmidt-Cassegrain optical designs are generally regarded as being superior to Maksutov-Cassegrain designs due to their higher light transmission, etc. *********************** Prices are subject to change due to recent exchange rate variations. Please remember that warranty may be void if you internally disassemble any telescope, regardless of model. Customer-caused or environment-caused damage is not covered by warranty, of course! *********************** OUR SUGGESTIONS GSO adopted all our suggestions re releasing right-angle correct-image finderscopes, standardising on f/5 focal ratio for large aperture GSO Dobsonians, upgrading to 2" focusers on all 8" and larger aperture GSO Newtonians, fitting larger diameter and smoothly-sculpted side tension knobs to Dobsonians, employing extra heavy duty TPL tripod legs, standardising on white colour for metal tube OTAs, fitting cut-foam inserts into accessory boxes and labelling all those boxes, etc., etc.

GSO RITCHEY-CHRETIEN DESIGN HIGH GRADE ASTROGRAPH
SUPER FLAT FIELD OTAs

Over 44 years of discounting!

Ritchey-Chretien astrographs are generally regarded as being superior to ALL other telescope designs (inc "edge" corrected SCTs) for "flat-field" astrophotography!!

One 50mm & two 25mm focal extenders inc. with ALL OUR RCs!

GSO factory-backed Australian 2 year warranty!

RC-6, 6" f/9 metal OTA

RC-6" 150mm f/9 astrograph w/M-CRF focuser!
Newest model with metal tube.
Super-flat field!

New low price!

Now...A$649

(6 in stock @ 06-08-21)

PLENTY IN STOCK!

RC-6 6" has one Vixen style 1.75" dovetail fitted.
Includes one 50mm and two 25mm focal extender rings!
Resolution of 0.76 arc-sec. Weighs 5.9kg.

We recommend manual EQ3, EQ5 equatorial
mounts and computerised EQ3PRO, EQ5PRO
(& up) equatorial mounts for use with RC-6".

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RC-8, 8" f/8 metal OTA

RC-8" 200mm f/8 astrograph w/M-LRS focuser!
Newest model with metal tube.
Super-flat field!

New low price!

Now...A$1099
(was A$1199)
(~4 in stock @ 06-08-21)

PLENTY IN STOCK!

RC-8 8" has two Vixen style 1.75" dovetails fitted.
(Dovetails shown in photo are NOT as supplied)
Includes one 50mm and two 25mm focal extender rings!
Resolution of 0.57 arc-sec. Weighs 8.5kg.

We recommend HEQ5PRO, AZ-EQ5-GT
& up computerised equatorial mounts
for use with RC-8" metal tube OTA.

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RC-8 8" f/8 Carbon Fibre OTA

RC-8" 200mm f/8 C.F. astrograph w/M-LRS focuser!
Newest model with Carbon Fibre tube.
Super-flat field!

Now...A$1699

(4 in stock @ 06-08-21)

PLENTY IN STOCK!

RC-8CF 8" carbon fibre has one Vixen style 1.75" dovetail on top
and one Losmandy "D" style 3" wide dovetail plate underneath.
The top Vixen dovetail bar is slightly different to the one shown.
Includes one 50mm and two 25mm focal extender rings!
Resolution of 0.57 arc-sec. Weighs 7.5kg.

We recommend EQ5PRO, AZ-EQ5-GT
& up computerised equatorial mounts
for use with RC-8" carbon tube OTA.

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RC-12, 12" f/8 metal tube OTA

RC-12" f/8 astrograph w/M-LRC focuser!
Latest model! White steel tube!
Super-flat field!

One only at...A$1999

YES, IN STOCK!

RC-12 12" has two Losmandy "D" style 3" wide dovetail plates
fitted to its two tube rings; one on top and one underneath.
Includes one 50mm and two 25mm focal extender rings!
Weighs 25kg., including its two tube rings
and two Losmandy style dovetail bars.
Photo for illustration purposes only.
Focuser is not a "floating" type.
Resolution of 0.38 arc-sec.
Price is negotiable...

We recommend Skywatcher EQ8PRO or
Celestron CGX or CGE computerised
equatorial mounts for RC-12" OTA.

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True breakthrough pricing for high-grade RC astrograph telescopes!
Astrographs are telescopes designed primarily for astrophotography.
Most photos are courtesy of GSO.

Special features of the newest RC-6" to RC-16" astrographs...

Ideal for astrophotography - due to virtually coma-free imaging!

True Ritchey-Chretien Cassegrain-type optics produce super flat field!

Flatter image compared to SCT and aplanatic/corrected SCT designs

Hyperbolic quartz primary and secondary mirrors with 99% reflectivity dielectric coatings for all RC 8", RC 10" and RC 12" models

Carbon-fibre optical tubes have outstanding thermal stability

Crayford style large 2" 10:1 microfocuser on RC 8" astrographs

Crayford style LINEAR 3" 10:1 microfocuser on RC10"/12" astrographs

Laser etched focuser drawtube setting scale

RC 6" has a metal tube, BK7 mirrors (not quartz), Crayford style 2" microfocuser, 40mm of microfocuser drawtube travel (not 50mm) and
a Skywatcher/Vixen style full-length (32cm) dovetail bar

RC 8", 10" & 12" have long 50mm drawtube travel (not 40mm)

RC 10" and RC 12" models have upgraded/smoother/stronger stainless steel reinforced Crayford 3" LINEAR 10:1 microfocusers!

One 50mm and two 25mm focal extenders included with ALL OUR RCs

Collimation instructions may be found at Astro Tech in the USA...(?)

We will better any genuine competitor's genuine offer, if they have in stock exactly the same model w/same specifications and accessories!

All-new GSO f/12 CLASSICAL CASSEGRAIN OTAs deliver
extra-high magnification!

Compare to SCT designs...

New GSO CC-6, CC-8 & CC-10A
Classical Cassegrain OTAs
enjoy truly glowing reviews!!

6" f/12 Cassegrain...A$799
CC-6 6" f/12
YES, NOW ONLY A$799!
(12 in stock @ 06-08-21)
PLENTY IN STOCK!

8" f/12 Cassegrain...A$1499
CC-8 8" f/12
(6 in stock @ 06-08-21)
PLENTY IN STOCK!

10" f/12 Serrurier CC-10A
TRUSS Cassegrain...A$3999
YES, IN STOCK!

Truly outstanding Cassegrains;
especially for planetary and
planetary nebula viewing!!

Ask "cosmologist" Luke for details!
Luke has a Bachelor of Astronomy
and Space Sciences & also a MSc.

GSO 16" Dobsonian telescope!

BEYOND AMAZING VALUE...

GSO GS-990 16" f/4.5 adjustable tension Dobsonian telescope!

OVER 44 YEARS OF DISCOUNTING!

P.O.A. AUD
SOLD OUT!
Subject to availability

Please place your order

Compare to all other 16" Dobsonians...worldwide!

Unrivalled and unbelievable value...indeed!

BONUS SV30 30mm 2" eyepiece!
YOU ALSO GET FOUR (4) GSO PLOSSL EYEPIECES, TOO!!!!

New design GSO truss tube 16" aperture, 1800mm focal length Dobsonian delivers amazing views of deep space and represents outstanding value!

Huge 16" f/4.5 primary mirror boasts superior 1/12 wave surface error

New, stronger roller bearing design with thicker steel panels

Unique new roller side bearings with adjustable tension/braking by way of extra large, knurled side knobs (our recommendation)!

Tube balance adjustment (fore and aft) of up to 25mm is possible

Strong 18-point primary mirror flotation cell - with a 4.7" cooling fan!

Easy assembly and disassembly of its heavy duty "TPL" truss tubes compared to complex 6-truss tube designs

Crayford style 2" 10:1 precision microfocuser with 1.25" adaptor

Oversized knurled collimation knobs allow easy mirror adjustment

Outstanding quality - overall! Black colour, not white!

No white reflective surfaces within the optical path in this design!

Features an achromatic 8 x 50 right-angle correct image finderscope

Limiting magnitude of 15.5 and resolving power of 0.29 arc seconds

You will see into deep space like you've never seen before...

Includes 2" 35mm eyepiece extension tube, 2" eyepiece accessory
tray and GSO Premium 6mm, 9mm, 15mm and 25mm 1.25" Plossl eyepieces!! COMPARE!!

SHIPPING & INSURANCE NOTES

Insurance cover for goods in transit is available from us for only $2 per $100 value of goods. Please advise us if you require this option when ordering.

Please consider insurance because we are not responsible for loss of parcels or damage sustained by parcels as the carrier is responsible! We do pack well! If your order (e.g. telescope or binocular) is damaged in-transit by the freight company then you must claim on the freight company, not ourselves!!
Of course, if you have paid us for insurance then you simply claim on us. We are quick at resolving damage claims, compared to
many freight companies.

Please do NOT write <fragile> on anything you send to us as doing so greatly increases the risk of damage. Please try to "double-box" all products sent to us.

Images are for illustration purposes only and are not necessarily representative of any products.
Please ask us or search internet for photos and extra information.

GSO TRUE RITCHEY-CHRETIEN
TRUSS-TUBE SUPER-FLAT FIELD ASTROGRAPH OTAs

BEYOND AMAZING VALUE!

Ritchey-Chretien astrographs are regarded as being far superior to all other telescope designs (inc. "corrected" SCT designs) for "flat field" astrophotography!

GSO factory-backed Australian 2-year warranty!

GSO RC CARBON FIBRE TRUSS-TUBE ASTROGRAPHS

OVER 44 YEARS OF DISCOUNTING!

SUPER FLAT FIELD COMPARED TO
TRADITIONAL SCT OTA DESIGNS!

RC-10A 10" f/8 truss astrograph

RC-10A 10" f/8 OTA w/M-LRC focuser!
New RC carbon fibre truss-tube astrograph.
Super-flat field!

Resolution of 0.47' (arc-seconds). Weighs 15.7kg.
We recommend Skywatcher EQ6PRO, EQ6R, AZ-EQ6
or Celestron CGEM & up computerised equatorial
mounts for use with RC-10A 10" truss tube OTA.
Includes primary and secondary mirror covers.

Now...A$4499
IN STOCK!

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RC-12A 12" f/8 truss astrograph

RC-12A 12" f/8 OTA w/M-LRC focuser!
New RC carbon fibre truss-tube astrograph.
Super-flat field!

Resolution of 0.38' (arc-seconds). Weighs 23.7kg.
We recommend Celestron CGX, CGE or Skywatcher
EQ8 and up computerised equatorial mounts
for use with RC-12A 12" truss tube OTA.
Inc. primary and secondary mirror covers.

Now...A$4999
IN STOCK!

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RC-14A 14" f/8 truss astrograph

RC-14A 14" f/8 OTA w/M-LRC focuser
**New lightweight primary mirror design**
RC carbon fibre truss-tube astrograph.
Super-flat field!

Now...A$6699
SOLD OUT!

Please call for availability!

New lightweight mirror design!

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RC-16A 16" f/8 truss astrograph

RC-16A 16" f/8 astrograph w/M-LRC focuser
New RC carbon fibre truss-tube astrograph.
Super-flat field!

Resolution of 0.29' (arc-seconds). Weighs 37kg.
Requires a mount with a payload capacity of 45kg. min.!

Now...A$7999
(2 in stock @ 06-08-21)
PLENTY IN STOCK!

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ALL OUR GSO RC TRUSS TUBE ASTROGRAPHS INCLUDE...

Newly upgraded heavy-duty 3" dual-speed (10:1)
LINEAR Crayford microfocuser!

Three (3) cooling fans, one 50mm and two 25mm focal
extension tubes and two Losmandy "D" style dovetails!

Hyperbolic quartz primary and secondary mirrors with 99% reflectivity dielectric coatings in all GSO RC truss tube models!

*NEW!!* GSO 10" & 12" f/4 Truss-tube extra-high quality IMAGING Newtonian reflector astrographs BEYOND AMAZING VALUE... Truss-tube 10" f/4 now...A$2999 Place your order. Model GS-800-NT New truss-tube 12" f/4...A$3699 Place your order... Model GS-900-NT Carbon fibre Serrurier truss design with 2"/1.25" Crayford linear focuser, D-style dovetail bars on top and bottom plus three cooling fans! 10" weighs ~17kg. 12" weighs ~23kg. NT = Newtonian Truss design.
Extra-high quality GSO IMAGING Newtonian reflector OTAs SELECTED GSO NEWTONIAN OTAs DISCOUNTED EVEN MORE!!!
Model	Andrews price (AUD)
New GS-550 "fast" imaging OTA! 6" 150mm f/4, M-CRF Imaging-optimised white OTA Newtonian reflector has a 2" Crayford style dual-speed 10:1 microfocuser with 1.25" adaptor, 6x30 finderscope, two tube rings and narrow 1.75"/45mm Vixen style dovetail bar. (150mm x 600mm). SKU; GS550OTA	GS-550 ...A$449 Yes, A$449! (was A$499) Plenty in stock! (6 in stock @ 06-08-21) Now has dual-speed 10:1 microfocuser
New GS-500 imaging OTA! 6" 150mm f/5, M-CRF Imaging-optimised white OTA Newtonian reflector has a 2" single-speed Crayford style focuser with 1.25" adaptor, 6x30 finderscope, two tube rings and narrow 1.75"/45mm Vixen style dovetail bar. (150mm x 750mm). SKU; GS500.	GS-500 ...A$399 Yes, A$399! (was A$469) Plenty in stock! (6 in stock @ 06-08-21)
New GS-530 superb imaging OTA! 6" 150mm f/6. M-CRF Imaging-optimised white OTA Newtonian reflector has a 2" Crayford style dual-speed 10:1 microfocuser with 1.25" adaptor, 6x30 finderscope, two tube rings and narrow 1.75"/45mm Vixen style dovetail bar. (150mm x 900mm). SKU; GS530.	GS-530 ...A$399 Yes, A$399! (was A$499) Plenty in stock! (4 in stock @ 06-08-21) Now has dual-speed 10:1 microfocuser
New CARBON FIBRE GS-600 C.F. "fast" imaging OTA! 8" 200mm f/4, M-CRF Imaging-optimised carbon fibre OTA Newtonian reflector has 2" Crayford style dual-speed 10:1 microfocuser with 1.25" adaptor, primary mirror cooling fan, 8x50 finderscope, two tube rings, narrow 1.75"/45mm Vixen style dovetail bar and large collimation knobs. (200mm x 800mm). This special C.F. model is subject to availability from GSO! Inc. new wide cast tube rings with guide scope mounting points	Sold out of 8" f/4 carbon fibre OTAs! This model is subject to availability from GSO! Special order with deposit will be required if/when OTA is available!
New GS-600 "fast" imaging OTA! 8" 200mm f/4, M-CRF Imaging-optimised white OTA Newtonian reflector has 2" Crayford style dual-speed 10:1 microfocuser with 1.25" adaptor, primary mirror cooling fan, 8x50 finderscope, two tube rings, narrow 1.75"/45mm Vixen style dovetail bar and large collimation knobs. (200mm x 800mm). SKU; GS600OTA Inc. new wide cast tube rings with guide scope mounting points. Has 70mm (minor axis) secondary mirror.	GS-600 ...A$599 Yes, A$599! (was A$649) Plenty in stock! (8 in stock @ 06-08-21)
New GS-630 8" f/5 Newtonian imaging OTA. 8" 200mm f/5, 2" M-CRF Imaging-optimised white OTA reflector has 2" Crayford style dual-speed 10:1 microfocuser with 1.25" adaptor, primary mirror cooling fan, 8x50 finderscope, two tube rings, narrow 1.75"/45mm Vixen style dovetail bar and large collimation knobs. (200mm x 1000mm). SKU; GS630OTA Inc. new wide cast tube rings with guide scope mounting points	GS-630 ...A$499 Yes, A$499 (was A$529) No need to pay A$549 elsewhere! Plenty in stock! (10 in stock @ 06-08-21)
New GS-800 "fast" imaging OTA. 10" 250mm f/4, 3" M-LRN Imaging-optimised OTA reflector features GSO's extra-heavy duty 3" LINEAR dual-speed 10:1 microfocuser with 1.25" adaptor, primary mirror cooling fan, 8x50 finderscope, two tube rings, narrow 1.75"/45mm Vixen style dovetail bar and large collimation knobs. (250mm x 1000mm). Photo is indicative of GS-800 model. SKU; GS800OTA Has strong and smooth 3" diameter linear focuser! Includes new, wide, cast tube rings with guide scope mounting points	GS-800 ...A$749 Yes, A$749 (was A$799) Plenty in stock! (2 in stock @ 06-08-21)
New GS-830 imaging OTA. 10" 250mm f/5, 2" M-CRF Imaging-optimised OTA reflector has 2" Crayford style dual-speed 10:1 microfocuser with 1.25" adaptor, primary mirror cooling fan, 8x50 finderscope, two tube rings, narrow 1.75"/45mm Vixen style dovetail bar and large collimation knobs. (250mm x 1250mm). SKU; GS830OTA Includes new, wide, cast tube rings with guide scope mounting points	GS-830 ...A$799 Yes, A$799 (was A$849) In stock! (1 in stock @ 06-08-21)
New GS-900 "fast" imaging OTA. 12" 300mm f/4, 3" M-LRN Imaging-optimised OTA reflector features GSO's extra-heavy duty 3" LINEAR dual-speed 10:1 microfocuser with 1.25" adaptor, primary mirror cooling fan, 8x50 finderscope, two tube rings, 3"/75mm wide D style dovetail bar and large collimation knobs. (300mm x 1200mm). SKU; GS900OTA Has 88mm secondary mirror. Has strong and smooth 3" diameter linear focuser! Includes new, wide, cast tube rings with guide scope mounting points	GS-900 ...A$1199 Yes, A$1199 (was A$1249) In stock! (2 in stock @ 06-08-21)
New GS-930 imaging OTA. 12" 300mm f/5, 2" M-CRF Imaging-optimised OTA reflector has 2" Crayford style dual-speed 10:1 microfocuser with 1.25" adaptor, primary mirror cooling fan, 8x50 finderscope, two tube rings, 3"/75mm wide D style dovetail bar and large collimation knobs. (300mm x 1500mm). SKU; GS930OTA Includes new, wide, cast tube rings with guide scope mounting points	GS-930 ...A$1199 Yes, A$1199 In stock! (1 in stock @ 06-08-21)

Virtually all accessories are in stock! Extra-high quality Guan Sheng accessories BEYOND AMAZING VALUE... GSO Coma corrector...A$149 Plenty in stock! NEW! GSO 0.75x RC focal reducer...A$149 Designed for use ONLY with GSO RC OTAs! Plenty in stock! GSO 12" NEWTONIAN TUBE RINGS NOW IN STOCK...A$99/pair
Type	Andrews price $(AUD)
Camera adaptor tube, 1.25", projection type. Model CA001. Plenty in stock!	$29.00
COMA CORRECTOR (CO-001) just arrived! Proven ideal for 8", 10" and 12" Newtonians. Coma corrects SCTs well and improves their field of view, too! Customers report very impressive results. Notably improves visual performance of GSO RC telescopes, too. 2" f/4. NOT for use with refractors! This is a 3-part kit! Plenty in stock!	$149.00 Plenty in stock!
Focal extender tubes; 50mm and 25mm lengths (use w/RC models)	$25.00 ea.
Focal reducer, 0.5x, 1.25"	$39.00
Extension tube (25mm long, 1.25", FF519), for above reducer	$19.00
Focal reducer, 0.5x, 2"	$79.00
NEW! Focal reducer, 0.75x, 2"for GSO RC-only telescopes!	$149.00
FOCUSER, for refractors of 70~80mm aperture. Smooth rack and pinion. Suits 86mm i.d optical tube	$49.00
Focuser collimation ring. Suits GSO RC 6" and RC 8" telescopes.	$99.00 In stock!
Tube rings (pair); 230mm inside dia. (for GSO 8" Newtonians)	$69.00/pair
Tube rings (pair); 303mm inside dia. (for GSO 10" Newtonians)	$79.00/pair
Tube rings (pair); 358mm inside dia. (for GSO 12" Newtonians)	$99.00/pair

GSO 1.25" Super Plossl eyepiece series Super Plossl 1.25" eyepieces -> only A$49 each!
Type	Andrews price $(AUD)
6mm, 9mm, 12mm, 15mm, 20mm and 25mm GSO Super Plossls have 52° apparent field and have fully multicoated (FMC) optics. (The bold type indicates plenty are in stock) Note; Super Plossl eyepieces have greater than 50° apparent field.	$49.00 ea. Plenty of most GSO Plossl eyepieces in stock!
32mm and 40mm Plossls have 45° apparent field and are fully multicoated (FMC) optics, too!	$49.00 ea. Plenty in stock

GSO 2" 40mm Plossl eyepiece...A$49 each!
Type	Andrews price $(AUD)
40mm - Four element 2" eyepiece with fully multicoated (FMC) optics. New model! Great value!	$49.00 Plenty in stock

DELUXE 50mm finderscope bracket assembly...A$79

Sold out!

Has quick-release block base & 6-point adjustment!

Block base fits many popular refractor focusers,
e.g. from GSO, William Optics, Long Perng, etc.

Strong vertical section fits down into GSO's block
base (which is fitted to most GSO truss-tube RCs)

OUTSTANDING GSO SUPERVIEW 68° EYEPIECES SV 1.25" eyepieces...only A$69 each SV 2" eyepieces...only A$99 each Outstanding performance and quality from GSO!
Type	Andrews price $(AUD)
SV 1.25"...SV 15mm (4-element) and SV 20mm (5-element). Plenty in stock Note that the SV 15mm eyepiece won't accept screw-in filters!	$69.00 ea. Plenty in stock!
SV 2"...SV 30mm, SV 42mm and SV 50mm (50mm=60 deg. APFV) All three 2" models are 5-element designs! Plenty of SV30, SV42 & SV50 2" eyepieces in stock!	$99.00 ea. Plenty in stock!

Guan Sheng adjustable focus CAMERA projection lens CSV 1.25" and 2" models...from only A$69 each!
Type	Andrews price $(AUD)
CSV-PL32, 32mm (CSV-PL), 1.25"	$69.00
CSV-PL40, 40mm (CSV-PL), 1.25"	$69.00
CSV30, 30mm, 2". Includes BONUS 2" to T2 thread adaptor! Plenty in stock!	$99.00 Plenty in stock!
CSV42, 42mm, 2" Includes BONUS 2" to T2 thread adaptor!	$99.00

GSO 2.5x APO 1.25" BARLOWS...A$69 each! GSO 3x ED 1.25" BARLOWS...A$49 each! Guan Sheng genuine extra-high grade Barlows
Type	Andrews price $(AUD)
Barlow, 2x magnification, 1.25", fully multi-coated (FMC) optics, 2-element achromatic design. Plenty in stock!	$49.00 Plenty in stock!
Barlow, 2.5x magnification, 1.25", fully multi-coated (FMC) optics, 3-element apochromatic. Highly recommended for use with most 1.25" telescopes!	$79.00 Plenty in stock!
Barlow, 5x magnification, 1.25", fully multi-coated (FMC) optics, 3-element, apochromatic. Plenty in stock!	$69.00 Plenty in stock!
Barlow, ED (Extra low Dispersion), 3x magnification, 1.25", FMC optics, 2-element, semi-apochromatic. Plenty in stock!	$69.00 Plenty in stock!
Barlow, 2" ED (Extra low Dispersion) 2x magnification, FMC optics, 2-element, achromatic. Includes 2" to 1.25" adaptor! A truly outstanding 2" 2x Barlow lens!	$99.00 Plenty in stock!

**EXCELLENT GSO EYEPIECE, FILTER & BARLOW KIT**

Compare to competitors' starter kits which contain
only 4 eyepieces, 4 filters and no Barlow, at all!
In stock!

PLENTY IN STOCK!

5 x Eyepieces, 6 x Filters & 1 x Barlow package = A$299

This EXCELLENT package includes superior grade 4mm, 6mm, 9mm, 15mm and 32mm focal length 1.25" diameter Plossl eyepieces (52 degrees AFV), one 2x 1.25" Barlow lens plus #12 Yellow, #21 Orange, #25 Red,
#56 Light green, #58A Green and #80A Blue 1.25" colour filters.
Photo is not of the actual kit. Photo is indicative of kit.

Guan Sheng extra-high grade diagonals from A$49 ea. GSO 2" dielectric diagonals from A$149 each GSO 2" QUARTZ diagonals...A$199 each
Type	Andrews price $(AUD)
Star diagonal, 90° 1.25", BK7 mirror.	$49.00
45° 1.25" correct image diagonal. See our Long Perng and Meade pages for similar diagonals!	$49.00 Plenty in stock
90° 1.25" correct image diagonal.	$59.00
Hybrid 1.25"/0.965" 90° correct image diagonal! Plenty in stock!	$79.00
Dielectric star diagonal, 2", 90°, BK7, 99% reflectivity. Outstanding 1/12 surface wave specification	$179.00
Dielectric SCT, star diagonal, 2", 90° (includes 1.25" adapt.), 99% reflectivity. Outstanding 1/12 surface wave specification	Now $149.00 (was A$179)
QUARTZ, star dia., 2", 90°, dielectric, 99% refl, 1/15 wave spec.	$199.00 Plenty in stock!
QUARTZ, SCT, star diagonal, 2", 90°, dielectric (includes 1.25" adaptor) 99% reflectivity and 1/15 surface wave specification	$199.00 Plenty in stock!

Guan Sheng 2" diameter focal extension tubes Only A$39 each!
Type	Andrews price $(AUD)
35mm extension, has brass compression ring - FF113	$39.00
50mm extension, has brass compression ring - FF114	$39.00
80mm extension, has brass compression ring - FF115	$39.00

Guan Sheng four-reticle red dot finder

Deluxe four-target red dot finder

Only $89.00 AUD
Plenty in stock!

New design 4-reticle red dot finder. Features brightness level and positioning adjustments. Anodised black aluminium - outstanding!
Includes plastic dovetail-shaped holder and metal block-type dovetail base!

If you wish to mount this red dot finder onto a William Optics or Long Perng telescope then please purchase a William Optics metal block-type base.

******************************************

Economical GSO red dot finder (RDF) has black plastic body. Clear lens of 20mm dia. Includes metal block-type base. $39. Sold out!

Please consider the Skywatcher version, which we have in stock!

We have the SKYWATCHER RDF (red dot finder) in stock at $39 each!

Note; The Skywatcher version does not include a metal or plastic block-type base. A metal or plastic block-type base is optional at extra cost.
The Skywatcher version includes a plastic holder (w/1" centre-to-centre hole spacing) and a plastic dovetail-shaped holder (as in photo above)!

Guan Sheng 8x50 finderscopes From only A$69 each...
Type	Andrews price $(AUD)
Finderscope, 8 x 50 right angle correct image diagonal (white), complete with metal holder and metal dovetail block base! Plenty in stock!	$99.00 Plenty in stock!
Finderscope, 8 x 50 straight-through (white), complete with metal holder and metal dovetail block base. Plenty in stock!	$69.00 Plenty in stock!
Finderscope metal holder and metal dovetail block base (for 8x50). Plenty in stock!	$39.00 Plenty in stock!
Finderscope metal dovetail block base only. Model AA085. Plenty in stock!	$19.00 Plenty in stock!
Finderscope, 8 x 50 "straight-through" finderscope (white), complete with DELUXE 6-point adjustable dual-rings black metal holder and strong black metal vertical section (see dual-ring holder photo below) with quick-release block base.	$99.00 SOLD OUT!
Finderscope, 8 x 50 right-angle correct image finderscope (white), complete with DELUXE 6-point adjustable dual-rings black metal holder and strong black metal vertical section (see dual-ring holder photo below) with quick-release block base.	$129.00 SOLD OUT!
GSO DELUXE finderscope 6-point adjustable dual-rings black metal holder with strong black metal vertical section with quick-release block base.	$79.00 SOLD OUT!

Guan Sheng CRAYFORD style RC "screw-on" 10:1 micro-focusers with 2" or 3" diameter drawtubes! From only A$99 each...
Type	Andrews price $(AUD)
LRS Microfocuser - RC cassegrain design Crayford style, regular 2" drawtube diameter, 10:1 linear bearing, "screw-on" type of microfocuser. Will screw onto compatible 90mm o.d. threaded tube. Suits RC-6 6" and RC-8 8" GSO RC telescopes, etc. Includes 2" to 1.25" adaptor. RC = Ritchey-Chretien. Main body height is 63mm. Has 50mm of drawtube travel.	$99.00 In stock!
FF670-M-LRS Focuser collimating ring assembly. Suits RC-6 6" and RC-8 8", GSO RC telescopes, etc.	$109 In stock!
Example of a GSO M-LRS composite collimating ring Photo of a FF670-M-LRS composite collimating ring
LRC Microfocuser - RC cassegrain design Crayford style, large 3" drawtube diameter, 10:1 linear bearing, "screw-on" type of microfocuser. Will screw onto compatible 120mm o.d. threaded tube. Suits RC-10 10" and RC-12 12" GSO RC telescopes, etc. Includes 2" to 1.25" adaptor. RC = Ritchey-Chretien. Main body height is 73mm. Has 50mm of drawtube travel.	$149.00 In stock!
FF672-M-LRS Focuser collimation ring assembly. Suits RC-10 10" and RC-12 12", GSO RC telescopes, etc.	$129 In stock!

Guan Sheng CRAYFORD style 2" 10:1 micro-focusers
Type	Andrews price $(AUD)
M-CRF - Newtonian reflector type Crayford style 2" 10:1 microfocuser for 230mm o.d. tube, e.g. 8" Newtonians. Main body height is 52mm. Has 35mm of drawtube travel	$169.00
M-CRF - Newtonian reflector type Crayford style 2" 10:1 microfocuser for 303mm o.d. tube, e.g. 10" & 12" Newtonians. Main body height is 52mm. Has 35mm of drawtube travel	$169.00
M-LRN - Newtonian LINEAR bearing heavy-duty reflector type Crayford style 2" 10:1 microfocuser for 230mm o.d. tubes. Suits 8" Newtonians.	$169.00 In stock!
M-LRN - Newtonian LINEAR bearing heavy-duty reflector type Crayford style 2" 10:1 microfocuser for 303mm o.d. tubes. Suits 10" Newtonians.	$169.00 In stock!
M-LST - SCT type Crayford style 2" LINEAR BEARING 10:1 microfocuser	$199.00 Plenty in stock!
Refractor type 86mm size (suits 86mm i.d. of refractor tube) Crayford style 2" 10:1 microfocuser. M-CRF series. Has 78mm main body length and 72mm of drawtube travel	$169.00 Plenty in stock!
Refractor type 96mm size (suits 96mm i.d. of refractor tube) Crayford style 2" 10:1 microfocuser. M-CRF series. Direct replacement for Skywatcher ED80 focuser!	$199.00 Plenty in stock!
Refractor type 112mm size (suits 112mm i.d. of refractor tube) Crayford style 2" 10:1 microfocuser	$229.00 Limited stock

***NEW***

GSO deluxe Newtonian laser collimator III...A$79

Type Price $(AUD)

Laser collimator - Deluxe Newtonian return beam type. Latest version. Has half-silvered 45° mirror target for easy primary mirror collimation.
New rear mounted push-button click-stop on/off power switch.

Includes 3 x LR44 (or SR44W/SR44/357/A76, etc.) "button" batteries!
Operates far longer than virtually all single "button" battery models... $79.00
Compare!

Plenty in stock!

Guan Sheng ATZ telescope mount/dovetail/tripod. We have all these ATZ products on order with GSO Now A$369
Type	Andrews price $(AUD)
GSO SkyView ATZ heavy duty alt-azimuth aluminium mount has Vixen style dovetail adaptor (FF561), adjustable height aluminium tripod legs and one fine-control/slow motion line. Not A$399 here, hi! GSO's ATZ is more stable and stronger than the S/W AZ3!	$369.00 Sold out! The SkyView ATZ is on order with GSO
NEW! GSO ATZ Mk. II heavy duty alt-azimuth aluminium mount has Vixen style dovetail adaptor (FF561), adjustable height aluminium tripod legs and one fine-control/slow-motion line. GSO's ATZ is more stable and stronger than the S/W AZ3! Mk.II includes FF341 8.5" (21.6cm) long extension tube! Sold out of FF341 extension fubes.	$469.00 Sold out! The ATZ Mk.II is on order with GSO
GSO SkyView FF341 8.5" (21.6cm) long extension tube, for use with ATZ mount. Sold out of FF341.	$129.00 Sold out! The FF341 is on order with GSO
GSO Eyepiece tray. Suits ATZ tripod (EE048)	$49.00 Limited stock!

Guan Sheng 1.25" special eyepiece filters from A$19 each Nebula OIII UHC GSO Nebula, OIII & UHC eyepiece filters. Availability of these special filters will be advertised here when confirmed by GSO
Type	Andrews price $(AUD)
Nebula filter - broadband, with light pollution and skyglow nulls. Sold out!	$79.00 Sold out!
Neutral density filter (ND96/AD083) D=0.3. Has 50% light transmission. Plenty in stock!	$19.00 Plenty in stock!
Neutral density filter (ND96/AD084) D=0.6. Has 25% light transmission. Plenty in stock!	$19.00 Plenty in stock!
Neutral density filter (ND96/AD085) D=0.9. Has 13% light transmission. Plenty in stock!	$19.00 Plenty in stock!
OIII filter - narrow band, ultra high contrast (UHC), has emission and planetary nebulae peaks; OIII and H-beta enhancement. See General Accessories/Andrews page for more OIII filter options.	$69.00 Sold out!
Polarising filter (AD086). You can use two polarising in series (i.e. stacked filters) to continuously adjust light transmission level Plenty in stock!	$19.00 ea. Plenty in stock!
Skylight filter - SCT thread type. Limited or no stock	$19.00
UHC filter - narrowest passband of GSO filters, for best results when viewing ring nebulae and most planetary nebulae. Passband centred at 500nm.	$59.00 Sold out!
UV/IR blocking filter, 1.25"	$29.00
Limited stock of some filters	Call us for info

Guan Sheng 2" eyepiece colour filters Only A$29 each
Type	Andrews price $(AUD)
#12 Yellow 2" filter (AD119)	$29.00
#21 Orange 2" filter (AD124)	$29.00
#25 Red 2" filter (AD121) Plenty in stock!	$29.00
#58A Dark green 2" filter (AD113) - Moon filter Plenty in stock!	$29.00
#80A Medium blue 2" filter (AD116) Plenty in stock!	$29.00

Guan Sheng 1.25" eyepiece colour filters Only A$24 each
Type	Andrews price $(AUD)
Moon filter (mid green in colour) (AD068) Plenty in stock!	$22.00 Plenty in stock!
#15 Dark yellow 1.25" filter	$22.00
#25 Mid red filter 1.25" (AD059)	$22.00
#80A Medium blue 1.25" (AD053). Plenty in stock!	$22.00
#82A Light blue filter 1.25" (AD054)	$22.00

Guan Sheng special dovetail mount adaptor FF561
Now only...A$49

Type

Andrews price $(AUD)

NEW! Dovetail adaptor (black finish) has two all-metal thumbscrews.
The FF561 will provide very secure mounting of your telescope!

Plenty in stock! $49.00

Plenty in stock

Guan Sheng SPECIAL adaptors - from only A$19 each! FF146...2"/T2 adaptor...A$39 ************************************* NEW! SC235 2" self-centreing adaptor provides 35mm extension. Now...A$49. In stock! *********************************** NEW! SC125 Self-centreing 2" to 1.25" adaptor...A$49! Plenty in stock! ************************************* M42 T2 spacer set...A$49 Includes 5mm, 10mm, 20mm & variable T-thread spacer with locking ring! Plenty in stock! M48 spacer sets are also in stock - see list below!
Type	Andrews price $(AUD)
FF006 - RC series 50mm extension tube x 1 (94mm o.d.)	$29.00
FF083 - RC series 25mm extension tubes x 2 (94mm o.d.)	$29.00
Dovetail bar kit. Complete with mounting brackets and screws. Suits RC6 6" OTA. Place your order with deposit for late 2021 delivery	$79.00 Sold out! Place your order for late 2021 delivery
Dovetail bar kit. Complete with mounting brackets and screws. Suits RC8 8" OTA. Place your order with deposit for late 2021 delivery	$79.00 Sold out! Place your order for late 2021 delivery
FF145 - 2" to male T2 camera thread (outside) adaptor Plenty in stock!	$39.00 Plenty in stock
FF146 - 2" barrel, male T2 outside thread with integrated 1.25" eyepiece holder and brass compression ring! Plenty in stock!	$39.00 Plenty in stock!
FF147 - 2" eyepiece holder for SCT telescopes	$39.00
FF148 - Female T2 camera thread to 2" barrel	Now $19.00
FF155 - 2" 40mm long extension tube w/male T2 camera thread	$39.00
FF273 - Losmandy style universal dovetail bar. Suits many designs of tube rings. Bar weighs approximately 500g. Includes mounting block saddles to suit GSO RC-8. Overall bar dimensions are approximately 394mm long x 101mm wide Plenty in stock!	$48.00 Plenty in stock!
FF341 - 8.5" long strong extension tube for ATZ mount. Subject to availability	$119.00

M42 SPACER SET includes 5mm, 10mm, 20mm, 30mm and variable 42mm T-thread spacer with locking ring!	$49.00 Sold out!
M42 variable T-thread spacer with locking ring! (FF267/FF268) As included in above "M42 spacer set"	$19.00 Plenty in stock!
M42 Spacer, 5mm (FF269)	$12.00 ea. Plenty in stock!
M42 spacer, 10mm (FF270)	$12.00 ea. Plenty in stock!
M42 spacer, 20mm (FF271)	$12.00 ea. Plenty in stock!
M42 spacer, 30mm (FF272)	$12.00 ea. Plenty in stock!

M48 SPACER SET includes 5mm, 10mm, 20mm, 30mm and variable 48mm T-thread spacer with locking ring!	$49.00 Plenty in stock!
M48 variable T-thread spacer with locking ring! (FF358/FF359) As included in above "M48 spacer set"	$19.00 Plenty in stock!
M48 Spacer, 5mm (FF360)	$12.00 ea. Plenty in stock!
M48 spacer, 10mm (FF361)	$12.00 ea. Plenty in stock!
M48 spacer, 20mm (FF362)	$12.00 ea. Plenty in stock!
M48 spacer, 30mm (FF363)	$12.00 ea. Plenty in stock!

SC235 2" Self-centreing 35mm extension adaptor. Has helical compression mechanism. Eliminates off-centreing issues which are common to simple single-side-screw designs. Total length is 70mm. Extension of 35mm is provided. Threaded to accept standard 2" filters.	$49.00 In stock!
SC125 Self-centreing 2"-to-1.25" adaptor. Has helical compression mechanism. Eliminates off-centreing issues which are common to simple single-side-screw designs. Threaded to accept standard 2" filters.	$49.00 In stock!

Guan Sheng Primary and Secondary mirrors!

Secondary mirrors from only A$49

Type
Andrews price $(AUD)

GSO PRIMARY MIRRORS (1/14th wave RMS typically)

PRIMARY 8" f/6 $199.00

PRIMARY 8" f/5 $209.00

PRIMARY 8" f/4 $219.00

PRIMARY 10" f/5 $329.00

PRIMARY 10" f/4 $549.00

PRIMARY 12" f/5 $649.00

PRIMARY 12" f/4 P.O.A.

GSO SECONDARY MIRRORS (1/14th wave RMS typically)

SECONDAY 28mm $49.00

SECONDARY 31mm $49.00

SECONDARY 41mm $49.00

SECONDARY 50mm $49.00

SECONDARY 63mm $69.00

SECONDARY 70mm $79.00

SECONDARY 88mm (AD037) $149.00

ALL GSO primary mirrors and some GSO secondary mirrors require pre-ordering. Prices subject to change due to exchange rate variations.
GSO secondary mirrors from 50mm to 88mm are normally in stock.

Andrews Communications Systems
Shop 8, 41-51 Bathurst St, Greystanes, NSW 2145
Telephone: (02) 9636 9060, (02) 9688 4301, (02) 9896 8972

Guan Sheng Telescopes