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Takahashi TSA-102S 102mm APO Refractor

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Product Description

The TSA-102S is the first in the new TSA line of Takahashi triplet apochromats. The color free images produced will delight the lunar, planetary and deep sky observer with very high contrast images with pin-point stars.

The compact size, less than 23" with the lens shade retracted, makes the TSA-102 the perfect airline ready apochromat. The TSA-102S is great for eclipse expeditions or transport to remote sites.

Not only is the TSA-102S a great visual instrument, it can be converted into a flat field f/7.84 or an f/5.98 wide field imaging platform for a CCD camera or digital SLR. The addition of the optional camera angle adjuster allows the image to be rotated 360 degrees without loss of focus. The camera angle adjuster is also very handy for visual applications to position the ocular or bino viewer in the best, most comfortable position.

The TSA-102S is a compact, high quality, apochromatic, versatile Takahashi, made for the refractor enthusiast who wants a very high quality instrument in a relatively compact package.

Aperture:                           102mm
Objective:                          New design triplet apochromat
Focal Ratio:                      F/8
Focal Length:                  816mm
Back Focus:                    230mm [9.39"]
Diameter of Main Tube: 114mm
Weight of Main Tube:     5kg [11lbs.]
Length of Main Tube:     585mm [23"] with lens shade collapsed
Focuser Size:                  68.6mm [2.7"]
Packing :                          triple carton [maximum protection]


  • Focal Ratio: f/5.98
  • Focal Length: 610mm
  • Image Circle: 53mm @ 5°


  • Focal Ratio: f/7.84
  • Focal Length: 800mm
  • Image Circle: 42mm @ 3°

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