Optical Tube Assemblies
Optical tube assemblies, commonly abbreviated by astronomers as OTAs are simply the tube of the telescope where the optics are internally located. OTAs can be helpful in a situation in which an observer has a compatible mount and doesn't want to buy a whole new telescope with a mount included. Optical Tube Assemblies can come in the form of Maksutov-Cassegrain, Astrographs, Reflectors, Refractors, Schmidt-Cassegrains and many others! With the right mounting connections and range of mount and tripod payload, OTAs are a great choice for changing optical type without changing the mount.
Fork mount set for the Borg 71FL Fluorite Optical Tube with Tripod.... Learn MoreFREE SHIPPINGModel#: 0271S(48 States)
Designed wtih the discerning astrophotographer in mind, Sky-Watcher USA’s top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more.... Learn MoreFREE SHIPPINGModel#: S11400(48 States)
Learn MoreFREE SHIPPINGModel#: B07746(48 States)
Picture yourself sitting in your friend Bill's backyard, with your other colleagues and friends Janice, Frank, Sue and Zeak. All of you have come together to commemorate Earth Hour... Learn MoreFREE SHIPPINGModel#: 1010-60-00(48 States)
Weighing in at 14.3 lbs this 5.5 inch Vixen telescope is an incredible performer. Deep Sky objects are easily visible and Astro-Imagers looking for a fast instrument with clear aperture will be impressed with the NA140’s performance.
Now with the 2 Speed focuser, flip mirror , 7x50 FinderScope and Tube Rings complete... Learn MoreFREE SHIPPINGModel#: 5868(48 States)
Regular Price: $1,799.00
Special Price: $1,699.00
Complete Includes: Custom soft case, Screw-on lens cover, Sliding dew shield, Plossl eyepiece, 2" focuser, 2" diagonal, 1 1/4" adapter, Ivory Powdercoat finish or Evergreen Powercoat... Learn MoreFREE SHIPPINGModel#: WXC-3063(48 States)
The telescope's large aperture and compact body make it ideally suited for astrophotography of nebulae, star clusters and comets. The use of the optional coma corrector allows for a sharp coma-free image from edge to edge, and the rack and pinion focuser, with an adapter, accepts 2 eyepieces.... Learn MoreFREE SHIPPINGModel#: 5869(48 States)