Guan Sheng Telescopes

GSO factory-authorised factory-direct importer with 2-year
factory-backed genuine Australian warranty!!

Australia's biggest and most trusted telescope discounter!

BEYOND AMAZING VALUE!


GSO GS-880 10" f/5 Dobsonian

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

MASSIVE CONTAINER SHIPMENT JUST ARRIVED!

WE ARE AUSTRALIA'S GENUINE TELESCOPE EXPERTS!


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.

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 fax; 02 96881995, by email; radioandrews@hotmail.com
or by mail; P.O. Box 240, Pendle Hill, NSW, 2145.

Updated 17-02-17

Learn More


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 new 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" e.p. w/GSO 10" & 12" Dobs!
 

Newest model now in stock!

Guan Sheng GS-580 6" f/8
150mm x 1200mm DOBSONIAN
with BONUS Moon filter!

First-grade Dobsonian!

$449 AUD
Plenty in stock!

Compare quality & price!!

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...

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!

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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 ASDX
200mm x 1200mm DOBSONIAN
with BONUS Moon filter!

First-grade Dobsonian!

$649 AUD
Plenty in stock!

Compare quality & price!!

THREE GSO PLOSSL EYEPIECES!!

New adjustable tension design!

Adjustable Super Deluxe
(ASDX)

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!

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 now in stock!


 
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 adjustment of the mirror cell
 

Newest model now in stock!

Guan Sheng GS-880 10" f/5 ASDX
250mm x 1250mm DOBSONIAN with BONUS Moon filter!

First-grade Dobsonian!
Compare to BT252-B!

$829 AUD
Plenty in stock!

Compare quality & price!!

THREE GSO PLOSSL EYEPIECES PLUS BONUS SV30 2" EYEPIECE!!

BONUS SV30 2" EYEPIECE!

THREE GSO PLOSSL EYEPIECES PLUS BONUS SV30 2" EYEPIECE!!

New adjustable tension design!

Adjustable Super Deluxe (ASDX)

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 now in stock!


 
 
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 ASDX
300mm x 1500mm DOBSONIAN
with BONUS Moon filter!

First-grade Dobsonian!
Compare to BT302-B!

$1099 AUD
Plenty in stock!

Compare quality & price!!

THREE GSO PLOSSL EYEPIECES PLUS BONUS SV30 2" EYEPIECE!!

BONUS SV30 2" EYEPIECE!

THREE GSO PLOSSL EYEPIECES PLUS BONUS SV30 2" EYEPIECE!!

New adjustable tension design!

Adjustable Super Deluxe
(ASDX)

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 now in stock!

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.

There is absolutely no need to pay far more elsewhere for your next telescope or accessory!! Why miss out on our generous bonuses, too?

We have sold well over 2,000 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.

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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 heavy duty TPL tripod legs, standardising on the colour white
for metal tube OTAs, etc...
 


GSO TRUE RITCHIE-CHRETIEN
DESIGN ASTROGRAPH OTAs

 SUPER FLAT FIELD AND SUPER VALUE COMPARED TO SCTs!

YES, TRULY AMAZING VALUE...


 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.

A$449
Plenty in stock!

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

OVER 40 YEARS OF DISCOUNTING!

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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.

 A$999
In stock now!

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 extenders!
Resolution of 0.57 arc-sec. Weighs 8.5kg.
 

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


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.

A$1299
Plenty in stock!

RC-8 8" carbon fibre has one Vixen style 1.75" dovetail on top and 
one Losmandy "D" style 3" wide dovetail plate underneath
.
Includes one 50mm and two 25mm focal extenders!
Resolution of 0.57 arc-sec. Weighs 7.5kg.

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RC-10, 10" f/8 metal OTA

RC-10" 250mm f/8 astrograph w/M-LRS focuser!
Newest model with metal tube.

 A$2499
In stock now!

RC-10 10" has two Losmandy style 3" wide dovetail plates fitted,
40cm long each; one on top of tube and one underneath.
Includes one 50mm and two 25mm focal extenders!
Resolution of 0.46 arc-sec. Weighs about 17kg.

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 RC-10, 10" f/8 Carbon Fibre OTA

RC-10" f/8 Carbon fibre astrograph w/M-LRC
Newest model with Carbon fibre tube!

 A$2799
Plenty in stock!

OVER 40 YEARS OF DISCOUNTING!

RC-10 10" carbon fibre has two Losmandy "D" style 3" wide dovetail
plates fitted
, 40cm long each; one on top and one underneath.
Includes one 50mm and two 25mm focal extenders!
Resolution of 0.46 arc-sec. Weighs about 16kg.
Photo is for illustration purposes only.


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

 
RC-12, 12" f/8 metal tube OTA


 RC-12" f/8 astrograph w/M-LRC focuser!
  Newest model with white steel tube!

 A$2799
Plenty in stock!


OVER 40 YEARS OF DISCOUNTING!

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 extenders!
Requires a mount with a payload capacity greater
than an EQ6PRO, which is rated at 20kg. max.!

Weighs 25kg., including its two tube rings
and two Losmandy style dovetail bars.
Photo is for illustration purposes only.
Resolution of 0.38 arc-sec.

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

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 carbon fibre RC 8", RC 10" and RC 12" models   
  • Carbon-fibre optical tubes have outstanding thermal stability
  • Hyperbolic quartz primary and secondary mirrors with 96% reflectivity enhanced aluminium coatings for metal tube RC 8", RC 10" & RC 12"   
  • 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!

GSO PLUS CELESTRON PENTAQUARK ASTROPHOTOGRAPHY PACKAGE!

ENJOY OUR 41st YEAR
CELEBRATION SALE!



GSO RC-8 8" f/8 OTA
Ideal for astrophotography

PLUS

CELESTRON VX MOUNT/TRIPOD PACKAGE!



THE ABSOLUTELY UNBEATABLE COMBINATION?

Only...$2499 AUD

IN STOCK

Compare to Skywatcher 8" f/4 C.F. Newtonian
(not RC) and HEQ5PRO (not PPPEC) package!!

 

 

GSO 16" Dobsonian telescope!

BEYOND AMAZING VALUE...



Guan Sheng 16" f/4.5 adjustable tension Dobsonian telescope!

YES, BEYOND AMAZING VALUE...

Now $2699 AUD
(Was A$2999)
Plenty in stock!


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

Unrivalled and unbelievable value...indeed!

BONUS SV30 30mm 2" eyepiece!

YOU 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 RITCHIE-CHRETIEN
TRUSS-TUBE ASTROGRAPH OTAs

 BEYOND AMAZING VALUE...

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

GSO factory-backed Australian 2 year warranty!
 


GSO
RC CARBON FIBRE TRUSS-TUBE ASTROGRAPHS

ENJOY OUR 41st YEAR
CELEBRATION SALE!

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!
All-new RC carbon fibre truss-tube astrograph


Resolution of 0.47' (arc-seconds). Weighs 15.7kg.

A$3399
Plenty in stock!

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

 RC-12A 12" f/8 OTA w/M-LRC focuser!
All-new RC carbon fibre truss-tube astrograph


Resolution of 0.38' (arc-seconds). Weighs 23.7kg.
Requires a mount with a payload capacity greater
than an EQ6PRO, which is rated at 20kg. max.

A$3899
Plenty in stock!

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RC-14A 14" f/8 OTA w/M-LRC focuser
All-new RC carbon fibre truss-tube astrograph


Sold out!

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 RC-16A 16" f/8 astrograph w/M-LRC focuser!
All-new RC carbon fibre truss-tube astrograph
 

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

A$7299

Sold out!

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

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-NEW-NEW***

New 10" & 12" f/4 Truss-tube GSO IMAGING Newtonian reflector OTAs

BEYOND AMAZING VALUE...



Call for availability


High quality GSO IMAGING
Newtonian reflector OTAs

BEYOND AMAZING VALUE...

The super-value alternative to expensive SCTs!!

***SAVE HERE ON GSO IMAGING OTAs***

Compare to Skywatcher's imaging OTAs, too!

GS-530 6" f/6 OTA

A$349

In stock!

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

GS-800 10" f/4 OTA

Now A$749
 
New imaging-optimised "fast" reflector
with 3" heavy duty linear microfocuser!
 

Model

Andrews price (AUD)

New GS-550 "fast" imaging OTA!
6" 150mm f/4, M-CRF Imaging-optimised OTA Newtonian reflector has 2" Crayford style 10:1 focuser with 1.25" adaptor, 6x30 finderscope, two tube rings with narrow 1.75"/45mm Vixen style dovetail bar.
(150mm x 600mm)
$399

 In stock!
New GS-500 imaging OTA!
6" 150mm f/5, M-CRF Imaging-optimised OTA Newtonian reflector has 2" Crayford style 10:1 focuser with 1.25" adaptor, 6x30 finderscope, two tube rings with narrow 1.75"/45mm Vixen style dovetail bar.
(150mm x 750mm)
$379

Plenty in stock!
New GS-530 superb imaging OTA!
6" 150mm f/6. M-CRF Imaging-optimised OTA Newtonian reflector has 2" Crayford style 10:1 focuser with 1.25" adaptor, 6x30 finderscope, two tube rings with narrow 1.75"/45mm Vixen style dovetail bar.
(150mm x 900mm)
$349

Plenty in stock!

 
New GS-600 "fast" imaging OTA!
8" 200mm f/4, M-CRF Imaging-optimised OTA Newtonian reflector has 2" Crayford style 10:1 microfocuser with 1.25" adaptor, primary mirror cooling fan, 8x50 finderscope, two tube rings with narrow 1.75"/45mm Vixen style dovetail bar and large collimation knobs.
(200mm x 800mm).
No need to pay A$529 elsewhere...

Compare to BT200 f/4 and save A$30!

Inc. new wide cast tube rings with guide scope mounting points
$499

Plenty in stock!

 
New GS-630 imaging OTA.
8" 200mm f/5, 2" M-CRF OTA Imaging-optimised reflector has 2" Crayford style 10:1 microfocuser with 1.25" adaptor, primary mirror cooling fan, 8x50 finderscope, two tube rings with narrow 1.75"/45mm Vixen style dovetail bar and large collimation knobs.
(200mm x 1000mm).

Inc. new wide cast tube rings with guide scope mounting points
$469
 
Plenty in stock!

 
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 10:1 microfocuser with 1.25" adaptor, primary mirror cooling fan, 8x50 finderscope, two tube rings with narrow 1.75"/45mm Vixen style dovetail bar and large collimation knobs.
(250mm x 1000mm). Photo is indicative of GS-800 model.


Has strong and smooth 3" diameter linear focuser!  
Includes new, wide, cast tube rings with guide scope mounting points
Now $749

Sold out!
 
New GS-830 imaging OTA.
10" 250mm f/5, 2" M-CRF Imaging-optimised OTA reflector has 2" Crayford style 10:1 microfocuser with 1.25" adaptor, primary mirror cooling fan, 8x50 finderscope, two tube rings with narrow 1.75"/45mm Vixen style dovetail bar and large collimation knobs.
(250mm x 1250mm).

Includes new, wide, cast tube rings with guide scope mounting points
Now $749

In stock!
 


 
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 10:1 microfocuser with 1.25" adaptor, primary mirror cooling fan, 8x50 finderscope, two tube rings with 3"/75mm wide D style dovetail bar and large collimation knobs.
(300mm x 1200mm).
Compare to BT300 f/4 and save A$50!

Has strong and smooth 3" diameter linear focuser! 
Includes new, wide, cast tube rings with guide scope mounting points.
Has 88mm secondary mirror.
$999

Limited stock!

 
 
New GS-930 imaging OTA.
12" 300mm f/5, 2" M-CRF Imaging-optimised OTA reflector has 2" Crayford style 10:1 microfocuser with 1.25" adaptor, primary mirror cooling fan, 8x50 finderscope, two tube rings with 3"/75mm wide D style dovetail bar and large collimation knobs.
(300mm x 1500mm).

Includes new, wide, cast tube rings with guide scope mounting points
$999

Limited stock!

 




 

Plenty of most accessories in stock!

Expanded range of high quality Guan Sheng accessories

BEYOND AMAZING VALUE...


GSO Coma corrector...A$149


NEW!
GSO 0.75x RC focal reducer...A$149
Designed for use with GSO RC OTAs.
Plenty in stock now!

GSO 12" NEWTONIAN TUBE RINGS NOW IN STOCK...A$99/pair
 

Type

Andrews
price $(AUD)

Camera adaptor tube, 1.25", projection type, CA001.
Plenty in stock now!
$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. NOT for refractors!

This is a 3-part kit!
$149.00

Now 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
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
Now in stock!
Tube rings (pair); 230mm inside dia. (for GSO 8" Newtonian) $59.00/pair
Tube rings (pair); 303mm inside dia. (for GSO 10" Newtonian) $89.00/pair
Tube rings (pair); 358mm inside dia. (for GSO 12" Newtonian)  $119.00/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 have 52 apparent field and have fully multicoated (FMC) optics.
Plenty in stock!

Super Plossl eyepieces have greater than 50 of apparent field.
 $49.00 each
 
32mm, 40mm have 45 apparent field and fully multicoated (FMC) optics  $49.00 each


GSO 2" 40mm Plossl eyepiece...A$39 each!
 

Type

Andrews
price $(AUD)

40mm - Four element 2" eyepiece with fully multicoated (FMC) optics.
New model! Great value!
$39.00


GSO 2" SP 65 series FMC eyepieces...A$39 each
 

Type

Andrews
price $(AUD)

SP 26mm - Fully multicoated (FMC) optics, with anti-slip grip and rubber eye cups  $39.00
SP 32mm - Fully multicoated (FMC) optics, with anti-slip grip and rubber eye cups $39.00
SP 40mm - Fully multicoated (FMC) optics, with anti-slip grip and rubber eye cups   $39.00


OUTSTANDING GSO SUPERVIEW 68° EYEPIECES

 SV 1.25" eyepieces...only A$59 each

SV 2" eyepieces...only A$89 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 now!
$59.00 ea.
SV 2"...SV 30mm, SV 42mm and SV 50mm (50mm=60 deg. APFV)
All three 2" models are 5-element designs! Plenty in stock now, except for SV50mm version.
$89.00 ea.
 


Guan Sheng adjustable focus CAMERA projection lens

CSV 1.25" and 2" models...from only A$59 each!

Type

Andrews price $(AUD)

CSV-PL32, 32mm (CSV-PL), 1.25" $59.00
CSV-PL40, 40mm (CSV-PL), 1.25" $59.00
CSV30, 30mm, 2". Includes BONUS 2" to T2 thread adaptor! $99.00
CSV42, 42mm, 2" Includes BONUS 2" to T2 thread adaptor! $99.00


GSO 2.5x APO 1.25" BARLOWS...A$69 ea!


GSO 3x ED 1.25" BARLOWS...A$49 ea!

Guan Sheng genuine high-grade Barlows

Type

Andrews price $(AUD)

2x magnification Barlow, 1.25", fully multi-coated (FMC) optics,
2-element achromatic design. Plenty in stock now!
$49.00
2.5x magnification Barlow, 1.25", fully multi-coated (FMC) optics,
3-element apochromatic.
Highly recommended for use with most 1.25" telescopes!
$69.00
5x magnification Barlow, 1.25", fully multi-coated (FMC) optics,
3-element, apochromatic.
$59.00
Sold out!
ED 3x magnification Barlow, 1.25", FMC optics, 2-element, semi-apochromatic. ED = Extra-low Dispersion (of light)  $49.00
2" ED 2x magnification Barlow, FMC optics, 2-element, achromatic. Includes 1.25" adaptor!
Massive shipment just arrived!
  $79.00
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 NOW IN STOCK!

5 x Eyepieces, 6 x Filters & 1 x Barlow package = A$279

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 true high-grade diagonals...from A$39 each!

GSO 2" dielectric diagonals...A$179 each

GSO 2" QUARTZ diagonals...A$199 each

Type

Andrews price $(AUD)

Star diagonal, 90 1.25", BK7 mirror. $39.00
45 1.25" correct image diagonal.  $39.00
90 1.25" correct image diagonal.  $49.00
Star diagonal, 2", 90, BK7. Sold out $99
Dielectric star diagonal, 2", 90,  BK7, 99% reflectivity. Outstanding 1/12 surface wave spec. $179.00
Dielectric SCT, star diagonal, 2", 90 (includes 1.25" adapt.), 99% reflectivity. Outstanding 1/12 surface wave spec.  $179.00
QUARTZ, star dia., 2", 90, dielectric, 99% refl, 1/15 wave $199.00
QUARTZ, SCT, star diagonal, 2", 90, dielectric (includes 1.25" adaptor) 99% reflectivity and 1/15 surface wave spec. $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)

8 x 50 straight-through (white) finderscope, complete w/metal holder and metal dovetail block base. Plenty in stock now! $69.00
8 x 50 right angle correct image diagonal finderscope, complete with metal holder and metal dovetail block base! $99.00
Finderscope metal holder and metal dovetail block base (for 8x50).
Plenty in stock now!
$39.00
Finderscope metal dovetail block base only. Model AA085.
Plenty in stock now!
$19.00
Economical GSO red dot finder, black plastic body. Has metal block mounting base! Clear lens of 20mm dia. Skywatcher version in stock! $39.00
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-Chretein.
Main body height is 63mm. Has 50mm of drawtube travel.
$99.00
FF670-M-LRS Focuser collimating ring assembly. Suits RC-6 6" and RC-8 8", GSO RC telescopes, etc. $109
In stock now!

Photo of 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-Chretein.
Main body height is 73mm. Has 50mm of drawtube travel.
$149.00
FF672-M-LRC Focuser collimation ring assembly. Suits RC-8 8" and RC-12 12", GSO RC telescopes, etc. $119
In stock now!


Guan Sheng CRAYFORD style 2" 10:1
micro-focusers


 

Type

Andrews price $(AUD)

M-CRF - Newtonian reflector type Crayford style 2" single speed focuser for 230mm o.d. tube, e.g. 8" Newtonians.
Main body height is 52mm. Has 35mm of drawtube travel. Lim. stock!
$69.00
Super special price!
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
$159.00
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
$159.00
M-LRN - Newtonian LINEAR bearing heavy-duty reflector type Crayford style 2" 10:1 microfocuser for 230mm o.d. tubes.
Suits 8" Newtonians. Plenty in stock now!
$159.00
M-LRN - Newtonian LINEAR bearing heavy-duty reflector type Crayford style 2" 10:1 microfocuser for 303mm o.d. tubes. Suits 10" Newtonians. Limited stock! $159.00
M-CRF - SCT type Crayford style 2" 10:1 microfocuser $159.00
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
Sold out!
 
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!
$189.00
Now in stock!
 
Refractor type 112mm size (suits 112mm i.d. of refractor tube) Crayford style 2" 10:1 microfocuser $229.00


***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!
 


Guan Sheng ATZ telescope mount/dovetail/tripod

Now A$299

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!
 $299.00
Plenty in stock!
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. Plenty due soon!
$399.00
 
GSO SkyView FF341 8.5" (21.6cm) long extension tube, for use with ATZ mount. Sold out of FF341. $119.00
Sold out!


Guan Sheng 1.25" special eyepiece filters from A$19 each


Nebula              OIII                UHC

Plenty of GSO special eyepiece filters due soon!
 

Type

Andrews price $(AUD)

NEW! Nebula filter - broadband, with light pollution and skyglow nulls. Sold out! $79.00
Neutral density filter (ND96/AD083) D=0.3. Has 50% light transmission. Plenty in stock now! $19.00
Neutral density filter (ND96/AD084) D=0.6. Has 25% light transmission. Plenty in stock now! $19.00
Neutral density filter (ND96/AD085) D=0.9. Has 13% light transmission. Plenty in stock now! $19.00
NEW! OIII filter - narrow band, ultra high contrast (UHC), has emission and planetary nebulae peaks; OIII and H-beta enhancement.
See General Access./Andrews page for more OIII filters.
$69.00
Sold out
 
Polarising filter (AD086). You can use two polarising in series (i.e. stacked filters) to continuously adjust light transmission level $19.00
each
Skylight filter - SCT thread type  $19.00
NEW! UHC filter - narrowest passband of GSO filters, for best results when viewing ring nebulae and most planetary nebulae, 500nm centred. $59.00
Sold out
UV/IR blocking filter, 1.25" $29.00
Limited stock of some filters.  


Guan Sheng 2" eyepiece colour filters

Only A$25 each

Type

Andrews price $(AUD)

#12 Yellow 2" filter (AD119) $25.00
#21 Orange 2" filter (AD124) $25.00
#25 Red 2" filter (AD121) $25.00
#58A Dark green 2" filter (AD113) - Moon filter $25.00
#80A Medium blue 2" filter (AD116) $25.00


Guan Sheng 1.25" eyepiece colour filters

Only A$19 each

Type

Andrews price $(AUD)

Moon filter (mid green) (AD068) $19.00
#15 Dark yellow 1.25" filter $19.00
#25 Mid red filter 1.25" (AD059) $19.00
#80A Medium blue 1.25" (AD053). Plenty in stock! $19.00
#82A Light blue filter 1.25" (AD054) $19.00


Guan Sheng special dovetail mount adaptor FF561
Now only...A$29

Type

Andrews price $(AUD)

NEW! Dovetail adaptor (black finish) has two all-metal thumbscrews.
The FF561 will provide very secure mounting of your telescope!
$29.00
 


Guan Sheng SPECIAL adaptors - from only A$19 each!

FF146...2"/T2 adaptor...A$29

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

 ANDREWS Special T-adaptor with Filter package!

New GSO UV-IR 1.25" filter + Atik 1.25" nosepiece
+ Skywatcher camera adaptor package...A$59!


Fully disassembled package

 
Fully assembled filter, nosepiece & camera adaptor

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

NEW!

SC235 2" self-centreing adaptor provides
35mm extension...A$59. In stock now!

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

NEW!

SC125 Self-centreing 2" to 1.25" adaptor...A$39!
In stock now!
 

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
FF598 - Dovetail bar. Suits RC6 6" OTA. $59.00
FF104 - Losmandy style dovetail bar. Suits RC8 8" OTA.
$119.00
FF145 - 2" to male T2 camera thread adaptor $39.00
FF146 - 2" barrel, male T2 outer thread with integrated 1.25" eyepiece holder and brass compression ring $29.00
 
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
FF341 - 8.5" long strong extension tube for ATZ mount $119.00
SC235 2" Self-centreing 35mm extension adaptor. Has helical compression mechanism. Threaded for standard 2" filters.
Total length is 70mm. Extension of 35mm is provided.
$59.00
Now in stock!
SC125 Self-centreing 2"-to-1.25" adaptor. $39.00
Now in stock!

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