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Mid-Night Star 8 inch F8 Ritchey-Chretien (RC)with EQ5 mount / Dual Axis Motor with Hand Pad Controller / Polar-Scope. . . . . Rs 93000
Recommend for: demanding astro imaging and observing
 
 
Optical Design: True Ritchey Chrétien / RC
Ritchey Chretien systems are excellent Cassegrain-configuration optical systems which are great performers for many different types of astronomical observation, but are particularly well suited for astrophotographic purposes. The RC has a concave hyperbolical primary mirror and a convex hyperbolical secondary mirror.
Contrary to Maksutovs or Schmidt-Cassegrains which have spherical mirrors and need image correctors, and contrary to Newtonians that need coma correctors, the RC system is a well corrected photographical instrument that uses only mirrors (no false colour!) and does not require any corrector with many cameras.
Hyperbolic RC system is superior to a standard Schmidt-Cassegrain and other optical designs in many important respects: a well-designed RC will have no Coma (elongation of stars) around the edge of the field; an RC will give a sharper on-axis response than most SCTs or Newtonians; they are completely false colour free; they have no front corrector plate, thus reaching thermal equilibrium quicker and cutting down dramatically on dewing issues.
The resulting image correction throughout the field as well as the sharpness on the optical axis are superior to typical Schmidt-Cassegrains or Newtonians.
 
TELESCOPE SPECIFICATION
RC 8 8" f/8 Ritchey-Chrétien Telescope with EXOS-II
Optical Design Ritchey- Chretien: True RC (Ritchey-Chretien) with a hyperbolic primary and a hyperbolic secondary mirror. No glass corrector plates or lenses in the optical train.
Diameter Primary Mirror Quartz - Mirrored 8" /203 mm:surface quality 1/12 Lambda or better. Primary Mirror 99% reflectivity dielectrically coated.
Secondary mirror Secondary 99% reflectivity dielectrically coated/collimatable
Focal Length, Focal Ratio 1624 mm, f/8
Recommended Maximum Visual Power 33x through 300x approx.
Accepts Eyepiece Barrel Ø 50.8mm (2") to 31.7mm(1.25")
Focuser 1:10 Crayford focuser for extremely smooth focusing. The dual speed 1:10 focusing knob is particularly important for astro imaging. No image shift and up to 5kgs load capacity! The focuser accepts 2" and 1.25" accessories.
The 2" Monorail focuser - much better, than a simple crayford design 
Standard Eyepiece(s) Not included
View Finder Scope not includer
Star Diagonal not included
Computer-optimized baffle system The inside of the tube is lined with computer-optimized baffles for optimum suppression of stray light.
Astro-imaging capability Lunar Planetary & Deep Sky
Mount type Equatorial EQ5 with built in level and polar alignment scope
Weight rating 20 lb
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 3.40 Kg.
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).
Length of tube 580 mm incl. focuser
diameter of tube 230 mm
Optical Tube Net Weight 7.5 kg
Dovetail mounting rail A GP-style dovetail rail is mounted on the underside of the tube. It fits in all mounts that accept GP / Vixen dovetail plates.
Weight, mount + tripod 6 kg + 3.5 kg (total Wt 9.5 Kg.
Weight, full assembled 22Kg
Shipping Weight OTA
Net weight - 6 Kg / Gross weight: 8 Kg
Shipping weight EQ-5 Net weight 18 Kg / Gross weight 20 Kg
Shipping Cartoon Dimension RC-8 OTA OTA: 75 x 31 x 25 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
  • Carry Bag for 8 inch RC 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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