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If you want the look of Hubble Space Telescope (HST) images, such as the famous “Pillars of Creation” (the Eagle Nebula, Messier 16), then the next...

In perfect condition, used Baader H-alpha / O-III / S-II Ultra-Narrowband (Narrowband) filter set - Premium Grade 3.5 / 4 nm half width (to harmo...

In perfect condition, open box Baader H-alpha / O-III / S-II Narrowband Filter Set - Precision Grade 6.5 nm FWHM, recommended for optical systems...

In perfect condition, open box Filter size 31 mm - round, unmounted - filter thickness 2 mm Set of L-R-G-B filters High-quality anti-reflective ...

Like new! Baader T-Ring to connect Nikon DSLR cameras onto the Astro T-2 system Results in the standard exact distance of 55.0mm from the front fac...

In good condition. Adapters show sign of use.  Comes with all original adapters and in the original box. Features Most accurate way to guide – im...

Like new!Features Portable power pack for your computerized Celestron telescope using Lithium-Iron Phosphate (LiFePO4) chemistry Powers your telesc...

In excellent condition! Comes in original boxFeatures This combination focal reducer and field corrector lens accessory works with all Celestron 5"...

In good condition! Comes with all accessories included, and in its original box.Features Enables automatic alignment of your Celestron computerized...

In fair conditionFeatures This Celestron T-Ring attaches to Canon EOS DSLR and SLR camera bodies Sturdy bayonet flange locks in place just like a l...

Like new!Features X-Cel LX eyepieces, optimized for planetary viewing, offer a 60° field of view through a six-element fully multi-coated lens syst...

A battery powered cloud sensor, perfect for those expeditions to dark-sky sites and star parties!

ED127 telescope (good condition) 3" 0.7x reducer from Explore Scientific (brand new) 2" Field flattener from Explore Scientific (good condition) 6...

The iOptron® Photron™ Ritchey-Chrétien design telescopes feature low thermal expansion quartz primary and secondary mirrors with ninety-nine percen...

The iOptron® Photron™ Ritchey-Chretien design telescopes, feature low thermal expansion quartz primary and secondary mirrors with ninety-nine perce...

Every astronomer should have at his disposition a detailed map of our only natural satellite: the Moon. Our map is based on thousands of images ...