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.
The Takahashi TOA-150B optical tube assembly is based upon an apochromatic refractor design which is beneficial to inhibit uncessary color often exposed when viewing bright stars and/or planets.... Learn MoreFREE SHIPPINGModel#: TOA-150B(48 States)
The TOA-150 is the second Takahashi Ortho Apochromat to be developed by Takahashi. It features a newly designed triplet objective. This new design like its smaller companion the TOA-130 is absolutely color free... Learn MoreFREE SHIPPINGModel#: TOK1501(48 States)