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6" Cassegrain Telescope by GSO
YOU ARE HERE >> HOME| Telescopes with Motor & GoTo| GSO 8" CC on EXOS-II GoTo System

8" F/12 M-CRF Cassegrain Telescope with EXOS-II GoTo System
D=200mm / F=2436mm F/12 - MADE IN TAIWAN Telescope
120000 + 18% GST
GSO makes the World's Finiest Astronomical Telescopes with unmatched manufacturing optical precision.
100% MADE IN TAIWAN
GSO 6" Classical Cassegrain Telescope GSO 8" Classical Cassegrain Telescope
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GSO 8" Classical Cassegrain Telescope GSO 8" Classical Cassegrain Telescope
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GSO 8" Classical Cassegrain Telescope
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8" f/12 Classical Cassegrain Telescope by GSO
  • Classical Cassegrain telescope with 8” aperture and focal ratio of f/12, ideal for visual observation and imaging of the Moon, planets, double stars, planetary nebulae, and other compact celestial objects
  • Folded optical design packs a focal length of 2436mm into an optical tube only 535mm long
  • No glass corrector plate means no chromatic aberration and fast temperature equalization and resistance to dew formation
  • Lightweight tube and optics for a total weight of just 20lbs, ideally matched to many mid-capacity alt-az and equatorial mounts
  • Dual-speed 2” Crayford focuser with 1.25” adapters with non-marring compression rings
  • Includes Losmandy and Vixen-style dovetail rails, shoe for finder scope, and dust cap 
 
Optical Tube System
Open Optical Tube System Prevent Dew Formation Thus Eliminate The Requirement Of Dew Shield. Comes Includes With Dual Speed 2'' Focuser. Fixed Primary Mirror And Secondary Preventing Mirror Flop Issue In Schmidt Cassegrain. Smaller Central Obstruction Of Just 33% Allow Much Better Contrast Than Similar Schmidt Cassegrain
 
96% Reflectivity Dieletric Coated Aluminium
These Mirror Are Specially Coated To Provide Maximum (96%) Light Reflectivity To Get The Best Contrast Available For Image Or Visual Usage. Compund RC Telescope Are Very Compact Due To The Optical Design
 
Precision Dual Speed Focuser
Most Standard SCT Comes With Standard Focuser, Our Classical Cassegrain Telescope Comes With High Quality Dual Speed Linear Bearing Focuser Allow Precision Focus And Sharp Image. Linear Bearing Prevent Focuser Flexure While Focusing And Locking
 
High Quality Internal Baffle
Our Classical Cassegrain Telescope Are Built With highest Standard Baffled Tube To Provide Maximum Contrast And Prevent Stray Light From Disturbing Viewing Or Imaging. These Baffle Systems Only Found In Higher Quality Telescopes
 
The advantages of GSO Cassegrain Telescopes in summary:
  • Large corrected and illuminated image field due to parabolic primary and hyperbolic secondary mirror with less field curvature than with SC telescopes.
  • Pure reflection system without Schmidt plate, as a result even Infrared photography becomes possible at full sharpness.
  • Significantly quicker temperature adaption than a SC, due to open design.
  • Brighter image due to 99% dielectric coating on primary and secondary mirror.
  • No shifting, because the primary mirror is fixated
  • High-quality 2" Crayford focuser with micro-gear reduction and compression rings for 2" and 1.25" accessories
  • 34% area obstruction caused by secondary mirror, comparable to SC telescopes.
  • Better sharpness on the optical axis due to precise mirror surfaces and the lack of a Schmidt plate
  • Less problems from dew: with Schmidt-Cassegrains you get condensation on the front plate, not with a Cassegrain
  • Interior baffles for even higher contrast
  • Generous backfocus allowing the use of 2" accessories.
  • Compact tube with only 500 mm length - can be operated with smaller mounts
  • Significantly less expensive than other classical Cassegrain telescopes!
 
BRESSER EXOS-II GoTo EQ Mounting System
BRESSER EXOS-2 GoTo Equatorial Mount. Mounttripod and hand box with computer. This German mount has tracking motors in both axes that follow celestial objects very precisely.

The handbox with GoTo works reliable and controls the mount in every situation. 
Precise ball bearings in both axes ensures minimal backlash at all nine possible tracking speeds.

The mount rests on a very tough and rigid steel tripod and can take optical tubes of up to 13 kg. GOTO Stargazing at the push of a button! 

The Startracker GoTo System enables beginners to start astronomical observations in just a few minutes, and guides you to objects that are hard to localize through a standard finder scope.

Just push the button and the GoTo System will find planets, nebulae or galaxies for you and position your telescope automatically and precise.

The GoTo System database includes thousands of astronomical objects.

The Messier mount with GoTo System allows you to observe without tedious searching, or image faint objects that are hard to find in a standard finder scope.

The BRESSER StarTracker GoTo systems uses servo motors for both axes and features an ST-4 compatible autoguiding input. Guiding aggressivity can be set on the mount itself. 

The menu navigation of the Startracker Handbox is also multilingual and offers the settings of German, English, French, Spanish and Italian.
 
EXOS-II GoTo Special Features
  • Equatorial GoTo-Mount with stainless steel tripod
  • Maximum payload: up to 13 kg
  • For easy finding and guiding the deep sky objects
  • Ideal for astrophotography because of an ST-4 compatible autoguider port
  • Included: Mount with tripod, Startracker handbox controller, 1x4.5kg counterweight, manual
  • Startracker handbox DE/GB/FR/ES/IT
 
GoTO Special Features
  • weight EXOS II Goto: 5.0kg (without counterweight shaft, which weighs 1.0kg)
  • payload capacity: 13kg
  • weight Tripod: 4.9kg
 
In The Box
  • 8' F/12 Classical Cassegrain
  • Choice of two eyepiece (Any ONE from : 4, 6, 9, 12mm and any ONE from 15, 20, 25, 32mm)
  • Mirror Star Diagonal 1,25"
  • 8x50 Achromatic Finder Telescope
  • 2'' Dual Speed 1:10 Microfocuser
  • 1X 50mm Spacer
  • 2X 25mm Spacer
  • Dual Vixen Dovetail Plate (Top & Bottom)
  • Dust Cover
  • Equatorial Mount with GoTo
  • Height Adjustable Tripod
  • Polar Finder Scope
  • 1x counterweight 4.5kg
  • Startracker Handbox DE / GB / FR / ES / IT
  • Manual
 
GSO TELESCOPE SPECIFICATION
Country of Manufacturing TAIWAN
Optics: Cassegrain Optics with parabolic primary and hyperbolic secondary mirror
Aperture: 203 mm - 8"
Focal length: 2436 mm
F-ratio: f/12
Lowest useful magnification 29x
Highest useful magnification 300x
Highest theoretical magnification 400x
Limiting stellar magnitude 14.2
Standard Eyepiece(s) Your choice of any two GSO Premium Plossl Eyepiece 1.25''
any one from series:: 12mm / 9mm / 6mm / 4mm
any one from series:: 15mm / 20mm / 25mm / 32mm
[ subject to availability in choices ]
View Finder Scope 8x50mm Fully multi-coated achromatic finder
Star Diagonal Mirror Star Diagonal 1.25"
Resolving Power  116.00arc*sec
Optical Quality Diffraction limited
Reflectivity 99% to primary and secondary mirror
Suitable for Infrared Photography: yes
Dove Tail Dual V-Vixen Dovetail Plate
Central Obstruction 68mm (10.9% By Area)
Optics Internal Baffled
Tube diameter: 191 mm
Tube length: 25" approx
Weight: 7.5 kg approx
Connection-thread of the focuser: M90x1 on the tube
GENERAL TECHNICAL DATA for EXOS-II GoTo
Mount Type German/Equatorial Mount with GoTo
Polefinder scope included, illumination optional
Drive system in RA / AZ 12V DC servo motors with encoders
Fine movements Electric (RA and DEC)
Bearing in alt-azimuth / RA 2 ball bearings
Bearing in elevation / DEC 2 ball bearings
Material tripod3 Stainless Steel
Colour white
DIMENSIONS & WEIGHTS for EXOS-II GoTo
Total length 100 mm
Total width 100 mm
Total height 160 mm
Maximum load capacity 13 kg
Net Weight total (incl. accessories) 15000 g
Net weight mount (incl. accessories) 5 kg
Net weight tripod (incl. accessories) 4.9 kg
Net weight pier (incl. accessories) 4.9 kg
Counterweight 4.5 kg
 
Instructions for use in ENGLISH
Bresser Operating Manual for EXOS-2 GoTo
 
WARNING
Buy BAADER Solar Safety Film
Buy 1000 OAKS Solarite Safety Film
 
The following items are FREE with the telescope listed above.
Magnitude 5 STAR Atlas
Directional Compass  FREE
Micro Fiber (Anti-Static) Cleaning cloth
Optics Cleaning Fluid
The Moon Map Poster B/W chart unfold to 22"x26"
110 Messier Object Locator     A4 size front back colour print
109 Deep Sky CALDWELL Catalogue A4 size front back colour print
Star Dial - Identifying Stars & Constellations
Various Astronomical Post-Card (SET-3)
Desiccant Cap - Refillable desiccant cap to protect fine optics
Astronomical Telescope - user guide
 
Suggested Accessories with this Telescope
    SOLAR FILTER
  • Baader Solar Filter (off-axis) Germany . . . . Rs. 1560
  • SOLARIX Solar filter (Explore Scienfific - USA) provide more pleasing and natural Yellow-Orange image of the Sun . . . . Rs 1830
    EYEPIECES (Super Premium Plossl for GSO) EYEPIECES (Super Premium Plossl for GSO)
  • 40mm Plossl Eyepiece 1.25" . . . . Rs. 2820
  • 32 mm Plossl Eyepiece 1.25" . . . . Rs 2640
  • 25 mm Plossl Eyepiece 1.25" . . . . Rs. 2550
  • 20 mm Plossl Eyepiece 1.25" . . . . Rs. 2460
  • 15 mm Plossl Eyepiece 1.25" . . . . Rs. 2280
  • 12 mm Plossl Eyepiece 1.25" . . . . Rs. 2100
  • 9 mm Plossl Eyepiece 1.25" . . . . Rs. 2100
  • 6 mm Plossl Eyepiece 1.25" . . . . Rs. 2100
  • 4 mm Plossl Eyepiece 1.25" . . . . Rs. 2100
  • GSO SuperView 15mm 1.25" Wide Angle Eyepiece . . . . Rs. 3000
  • GSO SuperView 20mm 1.15" Wide Angle Eyepiece . . . . Rs. 3000
  • GSO SuperView 30mm 2 " Wide Angle Eyepiece . . . . Rs. 4800
  • GSO SuperView 42mm 2" Wide Angle Eyepiece . . . . Rs. 4800
  • GSO SuperView 50mm 2" Wide Angle Eyepiece . . . . Rs. 4800
    DIAGONAL
  • GSO 1.25" Mirror Diagonal . . . . Rs.2100
  • GSO 2 inch Mirror diagonal . . . . Rs 5700
  • GSO 2 inch 99% Dielectric mirror Diagonal CNC . . . . Rs 7500
  • GSO 2 inch 99% Quartz Dielectric mirro Diagonal CNC . . . . Rs 9300
  • GSO 45 Degree Erecting Image Diagonal . . . . Rs 2640
    FINDER
  • GSO 6x30 Straight finder . . . . Rs.2460
  • GSO 8x50 straight finder . . . . Rs 3900
  • GSO 8x50 RA finder . . . . Rs 4800
    BARLOW
  • GSO 2x ED-Barlow-Lens (Multicoated) . . . . Rs.4800
  • GSO 2X Achromatic BARLOW LENS- fully multicoated 1.25" . . . . Rs. 1470
  • ED 3X Barlow Lens GSO 1.25" . . . . Rs. 2640
  • 3 Elememt 2.5x Barlow GSO 1.25"  . . . . Rs. 2370
  • 3 Elememt 5x Barlow GSO . . . . Rs. 2820
    CAMERA ATTACHMENTS
  • T-RING Nikon . . . . Rs. 840
  • T-RING Canon . . . . Rs 840
  • T Adapter 1.25" . . . . Rs. 750
  • Super ACHROMATIC (MultiCoated /High Colour corrected) 2X BARLOW 1.25" OD, 2 ELEMENT LENS with T-thread for direct camera attachment /with Brass compression ring / GSO. . . . Rs. 3,000
  • 2 inch T-2 Camera Adapter . . . . Rs 1650
  • GSO 40mm Camera adapter 2 inch . . . . Rs. 1560
  • Eyepiece Projection Camera Adapter . . . . Rs. 2100
  • Mobile Cell Phone Adapter . . . . Rs. 1830
  • GSO 1.25" 32mm Camera Projection Lens (CPL) eyepiece ... Rs. 3900
  • GSO 1.25" 40mm Camera Projection Lens (CPL) eyepiece ... Rs.4080
  • GSO 2" 30mm Camera Projection Lens (CSV) eyepiece ... Rs.5700
  • GSO 2" 42mm Camera Projection Lens (CSV) eyepiece ... Rs.5700
  • COMA Corrector 2 inch . . . . Rs 5700
  • GSO....0.5X Focal Reducer 1.25" with 25mm extension tube ....Rs 1560
  • GSO.....0.5x Focal Reducer 2 inch ....Rs 2100
  • GSO Planet View filter each . . . . Rs 660
  • GSO 2 inch EXTENSION TUBE
    35mm . . . . Rs 1470
    50mm . . . . Rs 1560
    80mm . . . . Rs 1650
  • GSO....0.5X Focal Reducer 1.25" with 25mm extension tube ....Rs 1560
  • GSO.....0.5x Focal Reducer 2 inch ....Rs 2100
  • GSO Planet View filter each . . . . Rs 660
 
 
 
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