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Nicely made extension tubes suitable for use with a wide variety of T-threaded equipment. Available in 7.5mm, 15mm & 40mm lenghts.

As spacers they are useful for increasing image scale and magnification.

The Smartphone Adapter DX Kit is a great first step into the world of astroimaging or digiscoping. You get everything you need to capture sharp, detailed images and video.

This adapter allows you to mount your binocular (porro or roof) to a tripod for added stability and convenience.

Celestron's high quality SCT to 2" SCT adaptor provides a solid connection between a Schmidt-Cassegrain or Maksutov-Cassegrain telescope and 2” accessories (e.g 2" diagonal).

Add one of Celestron’s planetary cameras to your Ultima Duo eyepiece, including Skyris, NexImage Burst, and NexImage 5 imagers.

Farpoint Eyepiece Extension Tube 3" long. This handy extension pushes into a 1.25″ telescope eyepiece or focus tube to add a 3" long extension.

Small bag for Flat Field Generators diam. 165 mm / 210 mm. Protect your valuable equipment with these high quality Geoptik cases. Made in Italy.

This handy kit comes with 2 greases for your equatorial mount. The first is simply for the internal gears to keep them lubricated for optimum performance.

The Battery Coupler acts as a dummy battery. By replacing your original battery and connecting this Coupler to your AC mains adapter it will provide a more stable and consistent power source

The RVO Horizon 0.5x Focal Reducer is a 1.25" threaded reducer for any 1.25" eyepiece or diagonal. This reducer will essentially half your focal length of your telescope providing a wider field of view and brighter images.

Designed for use in telescopes with 2" focusers. Threaded to accept standard photographic T-Mounts. High quality CNC machined adaptor with black anodized finish.

William Optics Universal Vixen Style Finderscope Base

Fits: Celestron 11” (28 cm) f/10 SCT versions (metal or carbon fiber tube) with metric thread factory collimation screws and "Trifid" rotary cover Fastar secondary housing. Factory collimation screws are black Phillips. These knobs will fit the C11 with EdgeHD optics. They will also fit the C11 with Starizona Hyperstar if the collimation screws have metric threads.

Fits: Celestron 11” (28 cm) f/10 SCT versions (metal or carbon fiber tube) with flat secondary housing and standard collimation screw threads (not for CPC 1100 or EdgeHD)

Fits: Celestron 11” (28 cm) f/10 SCT versions (metal or carbon fiber tube) with standard thread factory collimation screws and "Trifid" rotary cover Fastar secondary housing. Factory collimation screws are silver Phillips. These knobs will also fit the C11 with Starizona Hyperstar if the collimation screws have standard threads.

The G30 Focus Beam LED flashlight has an impressive light output of 121 lumens. Coast's Pure Beam Focusing Optic System with Twist Focus provides superior beam consistency from spot to flood, with no dark rings typically associated with focusing flashlights. A lightweight aluminum casing offers great durability and will hold up to heavy daily use.