With its moderate aperture and a respectable focal length, the Celestron Omni XLT 102mm f/9.8 Refractor Optical Tube Assembly is an ideal choice for making detailed observations of the moon and planets, with the ability to resolve bright deep-sky objects. The combination of medium-sized aperture and reliable refractor design keeps the weight under 10 pounds, so you can easily transport and carry it to dark, remote locations for better views. The OTA is offered without a tripod or pier for those who already have a reliable support system.
Optical Tube
- Moderate 102mm (4") aperture f/9.8 is ideal for lunar & planetary viewing with the ability to resolve bright deep-sky objects
- 1000mm focal length produces a high magnification potential
- Achromatic refractor lens configuration is reliable and does not require much maintenance or calibration by the user
- Proprietary StarBright XLT anti-reflection multicoatings reduce light loss while improving light transmission, color rendition, and contrast
- Resolution: 1.36 arcsec, Rayleigh;1.14 arcsec, Dawes
- Sturdy rack-and-pinion focuser can handle eyepieces and accessories without flexing
- L1.25" holder will accept the most popular size eyepieces and accessories
Mounting
- OTA only—mount head and tripod required for proper use
- Vixen-style dovetail plate is compatible with any alt-az or equatorial mount with a Vixen-style saddle
- 9.5-pound weight, ensure the head and tripod you mount it on can support this payload, plus accessories used with it like imaging systems, eyepieces, diagonals, Barlows, and filter wheels
Included Accessories
Eyepiece:
- 1.25" diameter barrel
- Accepts most 1.25" astronomical filters
- 25mm focal length produces 40x magnification
- 50° field of view
- 1.25" snout and eyepiece holder
- 90° angle puts head in comfortable viewing position when scope is aimed straight, or nearly straight, up
- Star diagonal corrects image horizontally, but not vertically, so images are right-side-up, but flipped backwards
- 6x magnification ensures a wide field of view for easier alignment and faster star-hopping navigation
- 30mm objective won't add excessive weight and bulk to scope
- Mounting bracket included
UPC: 050234088213