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Celestron 102mm Omni XLT Refractor OTA - 21088-OTA

SKU: CEL-21088-OTA

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Celestron 102mm f/9.8 Refractor Optical Tube Assembly
Mount & Tripod Not Included



This 4" achromatic refractor from Celestron is perfect for a budding amateur astronomer. Weighing in at just 9.5 pounds, the Omni XLT 102 OTA will attach easily to most any mount, even light weight models with limited load capacity. The included tube rings have a Vixen-style dovetail mounting bar attached to them so that the OTA can be mounted to the Celestron Advanced VX, CG-5, CG-4, or a wide range of alt-azimuth or equatorial mounts from Meade, Orion, etc.



The Celestron 102 mm refractor provides enough light-gathering ability to view all the best celestial objects in the solar system and beyond. In fact, the 4" optics collect 212X more light than the human eye! The telescope’s wide field of view allows you to appreciate celestial objects such as the Pleiades Star Cluster, Andromeda Galaxy, or simply panning the Milky Way, and wait till you get a look at the Moon, Saturn, or Jupiter!



The Celestron 102mm Omni XLT Refractor OTA sports quality optics that are fully coated with Celestron's famous StarLight XLT coatings. These optical coatings are used on Celestron's observatory-grade telescopes as well, and will help ensure crisp views and maximum light transmission on your Omni 102.



The smooth, easy to turn rack and pinion focuser accepts 1.25" accessories. The package includes a 1.25" star diagonal and a 25 mm eyepiece that will provide 40X magnification in a 50-degree field of view. We recommend you obtain a few more eyepieces to provide a choice of magnifications when viewing celestial, or terrestrial objects.



You can find those objects more easily with the included 6x30 optical finderscope. As its name suggests, this monocular-styled finder provides a low power, 6X magnification to easily locate and center objects in your eyepiece.



Celestron 102mm Refractor OTA Specifications:




  • Aperture: 102 mm (4.02 in)


  • Focal length: 1000 mm (39.37 in)


  • Focal ratio: 9.8


  • Eyepiece: 1 - 25 mm (0.98 in) (40 X)


  • Finderscope: 6x30


  • Optical coatings: StarBright


  • Highest useful magnification: 240 X


  • Lowest useful magnification: 15 X


  • Limiting stellar magnitude: 12.5


  • Resolution (Rayleigh): 1.36 arc sec


  • Resolving power (Dawes Criterion): 1.14 arc sec


  • Light gathering of power: 212 X


  • Angular field of view: 1.25°


  • Linear field of view: (@ 1000 yd): 66 ft (20.12 m)


  • Optical tube length: 39.5 in (1003.3 mm)


  • Optical tube weight: 9.5 lb (4.31 kg)
Description
Description

Celestron 102mm f/9.8 Refractor Optical Tube Assembly
Mount & Tripod Not Included

This 4" achromatic refractor from Celestron is perfect for a budding amateur astronomer. Weighing in at just 9.5 pounds, the Omni XLT 102 OTA will attach easily to most any mount, even light weight models with limited load capacity. The included tube rings have a Vixen-style dovetail mounting bar attached to them so that the OTA can be mounted to the Celestron Advanced VX, CG-5, CG-4, or a wide range of alt-azimuth or equatorial mounts from Meade, Orion, etc.

The Celestron 102 mm refractor provides enough light-gathering ability to view all the best celestial objects in the solar system and beyond. In fact, the 4" optics collect 212X more light than the human eye! The telescope’s wide field of view allows you to appreciate celestial objects such as the Pleiades Star Cluster, Andromeda Galaxy, or simply panning the Milky Way, and wait till you get a look at the Moon, Saturn, or Jupiter!

The Celestron 102mm Omni XLT Refractor OTA sports quality optics that are fully coated with Celestron's famous StarLight XLT coatings. These optical coatings are used on Celestron's observatory-grade telescopes as well, and will help ensure crisp views and maximum light transmission on your Omni 102.

The smooth, easy to turn rack and pinion focuser accepts 1.25" accessories. The package includes a 1.25" star diagonal and a 25 mm eyepiece that will provide 40X magnification in a 50-degree field of view. We recommend you obtain a few more eyepieces to provide a choice of magnifications when viewing celestial, or terrestrial objects.

You can find those objects more easily with the included 6x30 optical finderscope. As its name suggests, this monocular-styled finder provides a low power, 6X magnification to easily locate and center objects in your eyepiece.

Celestron 102mm Refractor OTA Specifications:

  • Aperture: 102 mm (4.02 in)

  • Focal length: 1000 mm (39.37 in)

  • Focal ratio: 9.8

  • Eyepiece: 1 - 25 mm (0.98 in) (40 X)

  • Finderscope: 6x30

  • Optical coatings: StarBright

  • Highest useful magnification: 240 X

  • Lowest useful magnification: 15 X

  • Limiting stellar magnitude: 12.5

  • Resolution (Rayleigh): 1.36 arc sec

  • Resolving power (Dawes Criterion): 1.14 arc sec

  • Light gathering of power: 212 X

  • Angular field of view: 1.25°

  • Linear field of view: (@ 1000 yd): 66 ft (20.12 m)

  • Optical tube length: 39.5 in (1003.3 mm)

  • Optical tube weight: 9.5 lb (4.31 kg)
Specifications
Specifications
Model Number 21088-OTA
Telescope Series Celestron Omni XLT
Focal Ratio f/10
Optical Design Refractor
Telescope Aperture 102mm (4.02")
Telescope Mount Type No Mount - OTA Only
Type of Electronics OTA Only - No Electronics
Number of Refractor Elements 2 (Doublet)
Focal Length (mm) 1000
Optical Coatings StarBright XLT Coatings
Limiting Stellar Magnitude 12.5
Lowest Useful Magnification 15x
Highest Useful Magnification 241x
Light-Gathering Power Compared to Human Eye 212x
Focuser Style Rack & Pinion
Focuser Size 1.25"
Focuser Speed Single Speed
Refractor OTA Length - Extended (in.) 39.5
Telescope OTA Weight (lb.) 9.5
Warranty Celestron 2 Years
What's in the Box?
What's in the Box?
  • Celestron 102 mm Omni XLT Achromatic Refractor Telescope OTA
  • 6x30 Finderscope
  • 1.25" Star Diagonal
  • 25 mm Eyepiece with 40x Magnification
  • 1.25" Rack & Pinion Focuser
Files
Files
  • Celestron 102mm f/9.8 Refractor OTA - Mount/Tripod Not Included
  • Celestron 102mm Omni XLT Refractor OTA - 21088-OTA
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