Takahashi TSA-120 Triplet APO Refractor

  • Sale
  • Regular price $4,430.00
  • Takahashi TSA-120 Triplet APO Refractor

    • Sale
    • Regular price $4,430.00
    • ITEM #



    Takahashi TSA-120 Triplet APO Refractor

    Takahashi TSA-120 Triplet APO Refractor

    Are you ready for more Takahashi innovations? You asked for superior quality optics in a portable package and you got it... the Takahashi TSA-120. The "T" stands for Triplet and an air-spaced triplet design is exactly what you'll get. Inside the precision crafted lens cell, you'll find three elements, two extreme quality crown and flint glass, with an FPL-53 Extra-low Dispersion glass element sandwiched in between. While traditional refractor designs use oil in between elements, Takahashi doesn't... that means no oil to possibly leak out or become opaque with age. The "SA" stand for "Super Apochromat" and Apochromatic means you're free from those strange violet glows which often accompany bright stars or planets.

    The lens cells are durably constructed to withstand transport - yet are fully able to be collimated should the owner wish to make adjustments. Just like its little brother, the TSA-102S, the optics on the Takahashi TSA-120 will be, we are sure, as near to perfection as you can get! The color free images produced will delight the lunar, planetary and deep sky observer with very high contract images with pin point stars. For planning out accesories to use to customize your experience, please consult this System Chart.

    Takahashi TSA-120 Specifications...

    • Aperture: 120mm
    • Focal Length: 900mm
    • Focal Ratio: 7.5
    • Tube Length with Dew Shield: 990m
    • Tube Diameter: 125mm
    • Diameter of Dew Shield: 713mm (28")
    • Resolution: 0.97
    • Limiting Magnitude: 12.
    • Back Focus: 227.5mm (8.93")
    • Weight: 12.6 lbs

    With TOA-35 Flattener:

    • Focal Length: 882mm
    • Focal Ratio: f/7.3
    • Optical Performance: 7 micron RMS-spot to 20mm off axis
    • Image Circle: 40mm
    • Image Field: 2.6" diameter

    With TOA-35 Reducer:

    • Focal Length: 672mm
    • Focal Ratio: f/5.6
    • Optical Performance: 4 microns RMS-spot on axis, 6 microns 10mm off-axis, 13 microns 20mm off-axis, 40mm/3.4" field

    Takahashi Product Number: TSA0120

    Important Note: Takahashi America requires that their telescope optical tube assemblies be shipped via 2nd Day Air or faster in order for the full warranty to be in force. Please make sure you choose the appropriate shipping method in your shopping cart or, if you speak to an OPT associate, request 2nd Day Air or faster. If you are purchasing a telescope and mount package or any accessories to accompany an OTA, please contact OPT for a shipping quote, since only the OTA is required to ship second day air but all other products can be shipped separately via any other available shipping method. Thank you!

    Additional Information

    Aperture119 mm (4.7")
    Back Distance227.5mm
    Dew Shield IncludedYes
    Dew Shield Outside Diameter160mm
    Diagonal Included Sold Separately
    Exterior ColorGloss White
    Focal Ratiof/7.5
    Free ShippingYes
    GPS includedNo
    Hand Controller includedNo
    Highest Useful Magnification300x
    Image Across FieldNot supplied by manufactur
    Limiting Stellar Magnitude12.1
    Mount Type OTA Only
    Optical CoatingsCoated
    Optical Design Apochromatic
    OTA Length28"
    OTA Outer Diameter125mm
    OTA Weight12.5 lbs.
    Power Adapter Included Does Not Require Power
    Telescope SeriesTakahashi TSA
    Tripod Type Included Sold Separately
    Warranty5 Year Warranty

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    Questions & Answers

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    • Is the focuser on the Takahashi TSA -120 single speed or dual speed? If single speed what is the expense of converting it to dual speed? Thanks

      The TSA-120 comes from the factory with the Micro-Edge dual speed focuser adapter attached from the factory in Japan.

    • If I order the Tak TSA-120 do you work with ScopeGuard Cases to provide a case for the scope? Thanks Mike

      Yes, we can special order Scope Guard cases for the TSA-120 and any other scope they currently make cases for. Please contact us directly at the store for a quote, as we need to check with the manufacturer on shipping rates.

    • Does this indeed come with the MEF fine focuser or does the INCLUDED ITEMS need to be updated on the site?

      The TSA-120 does come with the MEF installed on the focuser. Takahashi America installs it when they pull the scopes coming in from Japan for inspection and testing before shipment to OPT.

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