Takahashi Sky 90 O.T.A.


This model from Takahashi is a truly portable design. The 90mm (3") f/5.6 fluorite doublet apochromatic optical system is of outstanding quality, with a focal length of 504mm. The optical tube assembly is only 13.8" long, weighing 7 pounds; small enough for an airline 'carry-on'. Not only is this instrument an excellent choice for astronomy, it can be used as a portable high-quality telescope for birding. The oversized focuser is supplied with adapters for 2" and 1.25" diagonals, and accepts the FS series photographic adapters.

SPECIFICATIONS for the Sky 90 (Tube assembly only)

Optical SystemFluorite Apochromat Doublet
Focal Length500mm/408mm/800mm
Focal RatioF/5.56 - F/4.5 - F/8.9
Light Grasp 165x
Limiting Magnitude 11.5
Image Circle45mm w/reducer
Photo Field5.1 w/reducer
Tube Diameter95mm
Tube Length370mm
Weight3.2kg (7lbs)
Finder Scope6x30 or 7x50


Add to Cart:

  • Model: TSK9001
  • Shipping Weight: 30lbs
  • Manufactured by: Takahashi

This product was added to our catalog on Tuesday 21 June, 2005.