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UPS Shipping Delays / COVID-19 Response Statement

Takahashi TSA 102S APO Telescope OTA - TSA0102


The TSA 102S is no longer available from the manufacturer.  Here is a list of the Takahashi telescopes we offer.  If we can be of assistance, please don't hesitate to call us at 1-800-266-9590 or send us an email, and we will be happy to help you.  Thank you!

  • Takahashi TSA-102S APO Telescope has an Ortho-Apochromatic Triplet Lens with an aperture of 102 mm
  • The TSA-102S by Takahashi has a resolution of 1.14 arcsec
  • Takahashi TSA-102S is light weight and measures less than 23" long making it a very portable telescope that is easy to take on the go
  • The TSA-102S by Takahashi is a Refractor Telescope having a 2.7" rack and pinion focuser
  • Full 5 Year Manufacturer Warranty
  • Ships Direct From Takahashi America In Texas

Important: Takahashi America requires the shipment of all Takahashi Telescopes to be done via 2-Day Air or Faster for the Takahashi 5 Year Warranty to be valid. Select UPS 2 Day Air or faster when ordering this telescope. If something other then 2-Day Air shipping is selected our customer service team will contact you to make the change.

Takahashi TSA 102S APO Telescope was designed for flexibility and portability. Measuring less than 23" with the lens shade retracted, the Takahashi TSA-102 is perfect for airline travel so you can observe just about any where! The versatility of the TSA-102 allows for you to combine a great amount of high quality, light weight mounts and tripods to equip you with optics on the go! The diffraction-limited viewing on the TSA-102 helps achieve rich colors in binary stars, well resolved globular clusters and crips planetary and lunar images.

The Takahashi TSA-102 is Super Apochromat meaning you are free from those strange violet glows which often accompany bright planets or stars. The lens cells are fully collimated and robustly constructed to endure transport. The Takahashi optics are near perfection because of an airy-disc Strehl ratio of 0.992 and having a wave accuracy of 1/12th. Delivering very high contract images with pin point stars, the Takahashi TSA-102 pleases your planetary, lunar and deep sky observers.

The TSA-102S by Takahashi can be converted into a flat field f/7.84 or an f/5/9.8 wide field imaging platform for a CCD camera or digital SLR camera since it is a superb visual instrument. Because of the optional camera angle adjuster, you are able to rotate the image 360 degrees without loosing focus. This also allows for visual applications to position eyepiece or bino-viewers in the most comfortable and best positions possible. Adding an optional field flattener to your Takahashi TSA-102 when using it for astrophotography applications, helps change the focal ratio to f/7.84 and provides you with a 42 mm image circle and 3 degree field. Adding an optional focal reducer can change the focal length to 610 mm and the focal ratio to f/5.98, providing the astrophotographer with a 53 mm image circle and 5 degree field. The Takahashi TSA-102 allows for even more options by working with an array of camera adapters and even work with eyepiece projection, planet cams, and solar filters.


  • 2.7" focuser
  • Quick release finder bracket
  • Enhanced back focus of 230 mm
  • High color correction producing color free image
  • Assuring deflection with rigid 72 mm extension tubes
  • Over sized tube and knife edge baffles


  • 2.7" rack and pinion focuser features 230mm of backfocus, dual knobs and optional 360 degree camera angle adjuster
  • 102 mm aperture; 816 mm focal length at f/8 and can provide up to a 3.06 degree field at 16X
  • The Ortho-Apochromatic Triplet Lens incorporates an FPL-53 Extra-low dispersion glass element sandwiched between crown glass to eliminate chromatic aberration
  • All surfaces are fully anti-reflection multi-coated for excellent contrast and light transmission
  • Resolution of 1.14 arcsec and limiting visual magnitude of 12.5