Brand: Orion Telescopes USD

Orion 6" f/4 Newtonian Astrograph Reflector Telescope (Astronomy Star Product) (10269)

10269

Brand: Orion Telescopes USD

Orion 6" f/4 Newtonian Astrograph Reflector Telescope (Astronomy Star Product) (10269)

10269

With very fast f/4 optics and 94% reflectivity coatings, the Orion 6" Newtonian Astrograph will help you acquire outstanding high-resolution images of deep-sky objects with delightfully short exposure times so you can get great results in less time.
  • Fast 6"-aperture reflector lets you take short exposures with bright, high-resolution results
  • Precise 2" dual-speed (10:1) linear-bearing Crayford focuser lies 7" back in the optical tube to block stray light and boost contrast
  • Orion-exclusive steel reinforcement plate under focuser eliminates flexure with heavy imaging gear attached
  • Compact 22.5" length and light 12.7 lb. assembled weight doesn't require an enormous mount
  • Includes two heavy-duty hinged tube rings, 8x50 finder scope, dovetail mounting bar, and more
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$734.95 CAD

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Special Order
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Full Details What Can I See? What's in the Box? Specifications Reviews and Questions Articles, Videos, Software, Links

Product Description

Our 6" aperture imaging reflector is loaded with useful features to help you capture high-resolution images of the night sky. With very fast f/4 optics and 94% reflectivity coatings, the Orion 6" Newtonian Astrograph will help you acquire outstanding high-resolution images of deep-sky objects with delightfully short exposure times so you can get great results in less time. What's more, this compact imaging specialist is conveniently lightweight at just 12.7 lbs., so it doesn't require a huge mount to support it.

The rolled-steel Newtonian Reflector optical tube's 6"-aperture parabolic primary mirror measures 610mm in focal length, making the optically fast f/4 Astrograph a perfect choice for going after wide-field images of distant deep-space objects. Since the primary mirror is made of thermally stable B270 glass, it acclimates to ambient temperature more quickly than standard reflector telescopes. An oversized, 63mm minor axis secondary mirror provides excellent field illumination for DSLR and CCD cameras. Both primary and secondary mirrors boast enhanced reflectivity (94%) aluminum coatings to optimize contrast with a protective silicon dioxide (quartz) overcoat.

The 6" f/4 Newtonian Astrograph Reflector features a precise, 2" dual-speed (10:1) linear-bearing Crayford focuser which lies 7" back from the front of the 22.5" long optical tube. This recessed focuser position helps maximize contrast by blocking stray off-axis light for high-resolution performance. The super-steady linear-bearing Crayford focuser design will hold heavy imaging payloads without slippage. For consistent results every night, an Orion-exclusive steel reinforcing plate underneath the focuser eliminates flexure, even with heavy cameras and other imaging gear attached. A 2" compression ring collar and 1.25" compression adapter keep inserted cameras and accessories secure without scratching.

Of course, the 6" f/4 Newtonian Astrograph can also be used for spectacular visual observations of deep-sky and solar system based celestial objects. An included 2" diameter extension tube adds 1.38" (35mm) of length to the focuser for visual use. The reflector's 6" aperture and fast focal ratio will amaze you with high-contrast views of the cosmos.

A pair of hinged, die-cast aluminum tube rings with felt lining are included, which each have flat bosses on the top and bottom featuring M6 threaded sockets for easy attachment of the included Vixen-style mounting bar and additional imaging accessories. An 8x50 straight crosshair finder scope with dovetail bracket and snap-on dust cap are also included.

As with any fast Newtonian reflector telescope, an optional coma corrector is recommended to eliminate inherent coma for optimized imaging performance.

What can I see with a Orion 6" f/4 Newtonian Astrograph Reflector Telescope (Astronomy Star Product) (10269)?

Here are some simulated views of common objects. Results with your telescope will vary with viewing conditions, obrits, equipment and more.

Jupiter with

25mm Eyepiece - 24x Magnification

(Sold Separately)

Jupiter with

10mm Eyepiece - 61x Magnification

Sold Separately

Jupiter with

5mm Eyepiece - 122x Magnification

Sold Separately

Moon with 25mm Eyepiece

24x Magnification

(Sold Separately)

Moon with 10mm Eyepiece

61x Magnification

Sold Separately

Moon with 5mm Eyepiece

122x Magnification

Sold Separately

Andromeda with 36mm Eyepiece

17x Magnification

Sold Separately

Andromeda with 25mm Eyepiece

24x Magnification

(Sold Separately)

Andromeda with 10mm Eyepiece

61x Magnification

Sold Separately

What's in the Box

  • Orion 6" f/4 Newtonian Astrograph Reflector Telescope OTA
  • Pair of hinged tube rings
  • 8x50 finder scope and bracket
  • 2" extension tube for visual use
  • Narrow Vixen-style dovetail mounting bar
  • Dust cap
  • Starry Night SE astronomy software digital download insert

Specifications

Best for viewing Brighter deep sky
Best for imaging Deep sky
User level Intermediate
Optical design Reflector
Optical diameter 150mm
Focal length 610mm
Focal ratio f/4.1
Optics type Parabolic
Glass material Low thermal expansion glass
Resolving power 0.77arc*sec
Lowest useful magnification 21x
Highest useful magnification 177x
Highest theoretical magnification 300x
Limiting stellar magnitude 13.5
Optical quality Diffraction limited
Finder scope 8x50
Focuser 2" dual-speed linear bearing Crayford
Secondary mirror obstruction 63mm
Secondary mirror obstruction by diameter 42%
Secondary mirror obstruction by area 18%
Mirror coatings/over-coatings Aluminum & Silicon Dioxide
Mount type Optical Tube without Mount
Astro-imaging capability Lunar, planetary & long exposure
Backfocus distance 77.1mm
Tube material Steel
Length of optical tube 22.5 in.
Weight, optical tube 12.7 lbs.
Additional included accessories
  • Pair of hinged tube rings
  • 2" extension tube
  • 13" Vixen-type dovetail bar
  • 8 x 50 finder
  • Dust cover
Other features
  • Steel reinforcing plate under focuser
  • Oversized secondary mirror for fully illuminated field
  • Extended length front tube to block ambient light
Warranty One year

Customer Reviews

Based on 1 review
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D
D.V.B.
Well-designed scope, but not for a beginner.

This is a well-designed scope with nice parts, but is hastily assembled, so needs some experience and decent collimation tools to set it up. Mine also came with a broken finderscope shoe which I was able to easily fix myself. The scope will work with the Starizona Nexus 0.75 reducer corrector to produce a fast f/3 450mm scope. This fits Markarian's Chain into the FoV of the 1” sensor on the ASI533 camera. The scope has produced some nice tight stars in my images.

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