The TOA-150NFB 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.
The high contrast and total lack of color makes the TOA-150 not only an outstanding optical instrument, but it can be used to make outstanding images with a CCD, digital SLR or film camera. Framing the image or placing the ocular in a convenient position is made simple because of the built-in camera angle adjuster that allows the 360° rotation of the camera or ocular without loss of focus.
The new heavy duty focuser is designed to handle the new breed of heavy cameras and filter wheels. It uses a long stroke linear bearing designed to keep and hold a heavy instrument package. Like the FSQ-106ED it uses a trigger lock focus lock and new pinion assembly. The CAA and all standard adapters are still included as always.
The apochromatic triplet (double-ED objective with front and rear elements of FPL-53)(D=150mm, F=1100mm, F/D 7,33) is assembled in an extremely neat and precise barrel mechanical, entirely adjustable. Collimation is easy to realize and makes it possible to adapt perfectly the optical stresses to the conditions of observation or imaging. The tube has a retractable dewshield.
NOTE: Outside Diameter of the dew shield is 207mm.
Optical tube only. Mount and tripod sold separately.
SPECIFICATIONS for the TOA-150B (Tube assembly only) Objective: 150mm triplet Ortho Apochromat Focal Ratio f/7.33 Effective Focal Length 1100mm Tube Diameter Ø179mm Focuser 4° w/Camera Angle Adjuster and 10:1 Micro Edge Focuser Effective Focal Length [W/35 Flattener*] 1080mm Effective F-Ratio F/7.2 Image circle Ø40mm Effective Focal Length [W/67 Flattener*] 1090mm Effective F-Ratio F/7.3 Image circle Ø90mm Effective Focal Length [W/TOA Reducer *] 860mm Effective F-Ratio F/5.7 Image circle Ø50mm Effective Focal Length [w/ Super Reducer 825mm Effective F-Ratio F/5.5 Image circle Ø70mm