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YOU ARE HERE >> HOME | TELESCOPES WITH HPC | GSO 8" F/4 with EQ5 Motor

Mid-Night Star 8 inch F4 with EQ5 mount - by GSO [TAIWAN]
with Dual Axis Motor with Hand Pad Controller / Polar-Scope
63300 + 18% GST
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8" f/4 Imaging Newtonian telescope - for astro photography and rich field observation
  • fast and diffraction limited reflector system (f/4)
  • high definition parabolical primary mirror, better than typical Chinese mirrors
  • bright image by forced 94% mirror coatings
  • good field illumination by 70mm secondary mirror
  • robust mechanical system, no tilting/bending even under heavy camera load
  • improved Monorail focuser with 1:10 dual speed transmission - more stability compared with Crayford designs 
  • ideal for travelling: tube length only 58 cm, weight only 6 kgs with rings and finderscope.
  • GSO 8" f/4 Newtonian telescope is a strongly recommanded combination for astro photography as well as visual observing. We also offer high quality coma correctors for this fast imaging newtonian telescope.
 
What's in the Telescope Box
  • 200mm f/4 Newtonian optical tube assembly
  • 2" Crayford-style linear bearing focuser with 1.25" eyepiece adapter
  • 8x50mm straight-through finder with bracket and base
  • Tube rings
  • 8" Vixen-style dovetail rail
  • 2" extension tube with 35mm extension
  • Front dust cover
  • No instruction manual is included at this time (coming soon)
 
Fast and Precision Optics
The precisely figured 8" f/4 primary mirror is made from BK7 optical glass for enhanced thermal stability. BK7 is far superior in thermal characteristics to soda lime float glass - the glass used in consumer products like cookware - that's used in many reflectors in this price range. The mirror is coated with enhanced aluminum to at least 92% reflectivity and coated with a protective layer of SiO2 (quartz) for durability. The primary mirror is mounted in a cell with six external push-pull collimation knobs on the back of the tube, and the center-marked primary makes collimation with a laser a snap.

With a cropped-sensor DSLR camera or an astronomy camera such as the ZWO ASI071MC-Pro with an APS-C sensor, this scope gives a field of view across the diagonal of nearly 2 degrees, more than enough to frame the brightest regions of extended deep-sky objects like the Andromeda and Triangulum galaxies, the Orion Nebula, and the Horsehead Nebula.
 
The high-quality 2" Dual Speed Crayford focuser
The 2" Crayford focuser with 1:10 speed reduction is included. Accessories are evenly clamped with a brass compresssion ring. The 1.25" reducer is equipped with a brass ring, too. The focuser will not wobble even when used with heavy cameras. With the 1:10 speed reduction, precise focusing is possible. Point-shaped stars over the whole field are the result.
 
Tube and Mounting Rings

The tube of this imaging Newtonian is made from rolled steel for good thermal stability and it's capped with end rings of die-cut aluminum for protection and rigidity. It includes a dust cap. The scope also comes with two split-hinged die-cast aluminum mounting rings with felt lining to protect the finish of the tube. These rings make it easy to rotate the tube to bring the focuser and finder to the most comfortable viewing position. The bottoms of the rings have threaded mounting holes for a Vixen-style mounting plate (which is included) or an optional Losmandy-style plate. The tops of the two rings each have two threaded M6x25mm holes that are 7.5" apart so you can install a separate dovetail to mount other accessories such as a guide scope.

The tube has an attractive outside gloss white finish and a matte black interior finish to reduce stray reflection and increase image contrast. The tube is 9.15" in diameter (9.3" at the end rings), 27.75" long, and it extends beyond the focuser to act as a shield to prevent stray light from entering the tube and reducing image contrast. The primary mirror cell also includes a low noise, long-lifetime cooling fan powered by 8 AA batteries (batteries not included).

 
EQ-5 Mount with Dual Axis Motor with Hand Pad controller / Polar scope
  • Installing a motor drive on your equatorial (EQ) mount makes tracking objects hands-free and easy
  • Motor(s) slowly rotate your EQ-mounted telescope so it follows celestial targets as they appear to migrate across the night sky
  • Each motor drive provides regulated sidereal-rate tracking in Right Ascension (R.A.) as well as alternative speeds
  • Makes observing objects in the night sky easier and more enjoyable
  • STARTRACK EQ-5 Dual-Axis electronic drive provides motorized dual-axis control for high-power viewing and astrophotography
  • Drive controller allows sidereal tracking and electronic control of declination
  • Features 2x, 4x, and 8x speeds and pause mode
  • Includes two motors, controller and battery pack
  • Requires 4 D-cell batteries for operation (not included)
 
WARNING
 
TECHNICAL SPECIFICATIONS
Optical Design Fast Newtonian
Primary Mirror 200 mm Primary Mirror 94% reflectivity dielectrically coated/minimum 1/12th wave, BaK7 glass
Focal Length 800 mm
Focal ratio f/4
Highest Practical power  
Faintest Steller Magnitude  
Finder 8x50 Fully multi-coated achromatic finder with quick-release bracket
Focuser 2" Monorail with 1:10 dual speed transmission and reducer to 1.25", brass compression ring, with 2" extension tube - to achieve focus with all kinds of eyepieces
Accepts Eyepiece Barrel Ø 50.8mm (2") to 31.7mm(1.25")
Mirror Cell Primary mirror Cell with 12V Main mirror cooling fan
Secondary Mirror 00 mm minor Axis
Accepts Eyepiece Barrel Ø 50.8mm (2") to 31.7mm(1.25")
Eyepiece 1.25"
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 ]
Astro-imaging capability Lunar Planetary & Deep Sky
Mount type Equatorial EQ5 with built in level and polar alignment scope
Payload Capacity 9.10 kg
Dove tail Bar system Yes
Motor Drive Compatibility Dual Axis motor drives with hand-controller
speed 2x, 4x, 8x & 16x
Setting circle Yes
Polar-axis scope Yes
Counter weight Each 3.70 Kg. (Two Counter weight)
Tube material Steel
Tripod material STEEL Tripod legs
Tripod leg diameter 1.50 inch
Counter weight of bar length 11 inch
Diameter of counterweight shaft 20mm
Height range of mount 100cm (40 inch). to 140cm (55 inch).
Hight range of Tripod 67cm (26 inch). to 107cm (42 inch).
Tube dimension length 720 mm / diameter 240mm
Weight, optical tube 9 kg including mounting ring and 6x30 finder
Weight, mount + tripod 6 kg + 3.5 kg (total Wt 9.5 Kg.
Weight, full assembled 22Kg
Shipping Weight OTA
Tube : Net weight - 9 Kg / Gross weight: 12 Kg
Shipping weight EQ-5 Net weight 18 Kg / Gross weight 20 Kg
Shipping Cartoon Dimension 200/F4 OTA 86 x 42 x 34 cm3
Shipping Carton dimension EQ-5 96 x 40 x22 cm3
 
The following items are FREE with the telescope listed above.
Magnitude 5 Star Atlas
Collimination Tool (for Newtonian)
Directional Compass  FREE
Micro Fiber (Anti-Static) Cleaning cloth
Optics Cleaning Fluid
COLOUR POSTER 17.5"  x 22.5 "  one
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
The Moon Map Poster B/W chart unfold to 22"x26"
 
Suggested Accessories with this Telescope
    SOLAR FILTER
  • Baader Solar Filter (off-axis) Germany . . . . Rs. 1560
  • R-G Solar filter (USA) provide more pleasing and natural Yellow-Orange image of the Sun . . . . Rs 1830
    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
  • 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
    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
  • Universal A-focal / Digital camera adapter . . . . Rs 930
  • Universal A-focal / Par-focal cam-cord adapter . . . . Rs 1200
  • 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
  • Eyepiece Projection Camera Adapter . . . . Rs. 2100
  • Universal Cell Phone Adapter . . . . Rs. 1830
  • GSO 1.25" 32mm Camera Projection Lens (CPL) eyepiece ... Rs. 3,900
  • GSO 1.25" 40mm Camera Projection Lens (CPL) eyepiece ... Rs.4,080
  • GSO 2" 30mm Camera Projection Lens (CSV) eyepiece ... Rs.5,700
  • GSO 2" 42mm Camera Projection Lens (CSV) eyepiece ... Rs.5,700

  • CARRY BAG
  • Padded Carry Bag for 8 inch f5 OTA . . . . Rs. 2100
  • Padded Carry Bag for EQ Mount . . . . Rs 1560
  • Padded Carry bag for STAND . . . .Rs 1560
  • GSO....0.5X Focal Reducer 1.25" with 25mm extension tube ....Rs 1560
  • GSO.....0.5x Focal Reducer 2 inch ....Rs 2100
  • Planet View filter each . . . . Rs 660
 
 
 
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