Celestron CGEM II 11" SCT GoTo Telescope

Celestron 11" SCT (CGE) Optical Tube Assembly

The night sky has always fascinated individuals and with good reason. The heavens are teeming with life, but sadly, most of it is not visible to the naked eye. Now with the study of Astronomy and the invention of telescopes, the moon, stars and planets are all within reach. With the right instruments, there's no telling what you might see.

The Celestron 11" SCT (CGE) Optical Tube Assembly is ideal for capturing breathtaking views of galaxies, star clusters, nebulae and planets. Celestron 11" SCT Optical Tube Assembly has a number of features that provide you with optimum light transmission and brighter, crisper images ideal for the astronomy enthusiast. The night sky is now in your hands.

Features

With an optical tube that measures 24-inches in length and weighs 27.5 pounds, this mid level optical instrument meets the demands of observers and astrogimagers who want a telescope that's more portable than a reflector or refractor.The scope offers a large 11" aperture and a long focal length of 2800 mm.

Celestron's unique StarBright XLT optical coatings dramatically increase light transmission by up to 97 percent on its Schmidt corrector lenses. Vew pinpoint stars across the largest imaging sensors in bright, crisp detail and capture breathtaking, sharp, flawless astroimages.

The 11" Schmidt-Cassegrain Optical Tube Assembly has an aluminum optical tube and comes with a 25 mm eyepiece and a visual back which allows for use with other 1.25" accessories. The 9x50 finderscope helps accurately find objects in the night sky and the star diagonal provides more comfortable viewing position when observing objects that are high in the sky. The 11" OTA includes a dovetail rail compatible with CGE Advanced Series mount.

Celestron Counterweight 17lbs for 19mm Shaft

Whether you are enhancing your mount setup or buying a replacement part, the counterweight is there to balance weight of the optical tube (OTA) and accessories on the other side of the Right Accession (RA Axis). If you add accessories to your telescope setup (ie camera, guider, etc), you may need to add additional counterweights to off-set the weight.

Improved Balance

If the balance is off on one-side or the other, it can do damage to your OTA and setup, the motor gear, and/or may have issues with tracking accuracy. You can add additional counterweights to improve the responsiveness to the system by reducing the mass inertia, though you need to make sure you space out the counterweights along the shaft to reduce damage to your setup and that it is cost-effective and worth it for your telescope setup.

Stable

This counterweight comes with a sturdy knurled knob locks to safely hold in place on the counterweight shaft. The counterweight is designed to fit 19mm counterweight shafts.