Telescope-Refracting Telescopes-Celestron 102mm Omni XLT Refractor OTA

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

This 4-inch 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-inch 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 package includes a 2-inch to 1.25-inch eyepiece adapter, 1.25-inch star diagonal and a 25mm, 1.25-inch 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 6×30 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. Want to learn how to calculate your Celestron 102mm Refractor’s magnification? Check out the video below!

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: 6×30

• Optical coatings: StarBright

• Highest useful magnification: 240X

• Lowest useful magnification: 15X

• Limiting stellar magnitude: 12.5

• Resolution (Rayleigh): 1.36 arc sec

• Resolving power (Dawes Criterion): 1.14 arc sec

• Light gathering of power: 212X

• 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)