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Orion

Orion Apex 127mm Maksutov Cassegrain Telescope Kit with Eyepiece & Software, 127mm Optical Diameter, f/12.1 Focal Ratio

SKU: ONA127MC MFR: 09825
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About the Orion 127 Maksutov Cassegrain

The Orion Apex 127mm Maksutov Cassegrain Telescope boasts big 127mm (5") diameter optics but in a tube that's a fraction of the length (just 15" long) and weight (8.6 lbs) of a Newtonian reflector or refractor of similar aperture and focal length. It's high-performance optics gives the Apex 127 Mak such outstanding image quality and such an incredible range of uses for the demanding observer. It gulps in 55% more light through its multi-coated, 5" meniscus lens than that of a 4" scope, putting it in the big leagues for astronomical observation and advanced nature study.

And its long 1540mm (f/12.1) focal length provides 62x magnification with the included 25mm Sirius Plossl eyepiece (1.25") and lets you push the power up to 250x with optional eyepieces! Bright views of star clusters and nebulas at low power, stunning lunar and planetary detail at higher power. And as a daytime spotting scope, no instrument is more capable, especially in low-light conditions. It couples quickly to any sturdy equatorial mount or photo-style tripod (Orion recommends Paragon-Plus XHD tripod, #5360) thanks to a built-in 1/4"-20 adapter plate. Mounting and disassembly are a snap. Quality is evident not only in the optics, but also in the black-anodized aluminum front and rear castings, the smooth-turning focus knob and the extruded aluminum tube, with a classy, metallic-burgundy finish.

The 6x26 achromatic, correct-image finder scope features a quick-release aluminum bracket with a dovetail base and two-screw X-Y alignment. The 25mm Sirius Plossl eyepiece slips into a 45° correct-image prism diagonal, also included. The T-threads on the eyepiece adapter allows attachment of a 35mm camera body (with optional T-ring) to the scope for telephoto photography. It also include a fully padded, nylon/polyester carrying case, which has plenty of room for additional accessories in the zippered side pockets.

Orion 127 Maksutov Cassegrain Includes

  • Orion Optical Tube Assembly
  • 25mm Sirius Plossl Eyepiece (1.25")
  • 45-Deg Correct-Image Diagonal
  • 6x26 Correct-Image Finder Scope
  • Finder Scope Bracket with O-Ring
  • Dust Cap
  • Soft Carry Case
  • Starry Night Special Edition Software
  • Orion 1 Year Limited Warranty

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Orion 127 Maksutov Cassegrain Features

  • Bright views of star clusters and nebulas and stunning lunar and planetary detail
  • 127mm aperture and 1540mm focal length put this telescope in a league of its own
  • Includes one eyepiece, finder scope, diagonal, case and Starry Night astronomy software

Orion 127 Maksutov Cassegrain Specifications

Use Astronomy & terrestrial
User level Intermediate
Optical design Maksutov-Cassegrain
Optical diameter 127mm
Focal length 1540mm
Focal ratio f/12.1
Eyepieces included Sirius Plossl 25.0mm (1.25")
Magnification with included eyepieces 61x
Resolving power 0.91arc sec
Lowest useful magnification 18x
Highest useful magnification 254x
Limiting stellar magnitude 13.2
Optical quality Diffraction limited
Finder scope 6x26 Correct-image
Focuser Internal
Diagonal 1.25" 45-deg Prism Correct-image
Secondary mirror obstruction 39mm
Secondary mirror obstruction 31% by diameter
Secondary mirror obstruction by area 9%
Mount style Optical Tube without Mount
Astro-imaging capability Lunar & planetary
Tube material Aluminum
Length of optical tube 14.5 in
Weight, optical tube 8.6 lbs
Warranty Orion 1 year limited warranty
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