Apochromatic refractors

Manufacturers

Advanced search

Categories

Show allHide

Price

Info

Shopping

New products

Offers

Send to a friend

Send to a friend

Takahashi FOA-60 fluorite apochromat complete version

Takahashi FOA-60 fluorite apochromat complete version

Takahashi FOA-60 fluorite apochromat complete version with cradle, finder bracket and 6x30 optical finder. Fluorite doublet apochromat with 60 mm objective lens and 530 mm focal length (F/8.83). The most corrected of any Takahashi refractor!

Recipient :

* Required fields

  or  Cancel

Takahashi FOA-60 fluorite apochromat complete version

Takahashi

TK-TFA06000

New product

Takahashi FOA-60 fluorite apochromat complete version with cradle, finder bracket and 6x30 optical finder. Fluorite doublet apochromat with 60 mm objective lens and 530 mm focal length (F/8.83). The most corrected of any Takahashi refractor!

More details

1 702,00 €

Ordered upon request

Follow the price

Keep track of the price drops on this item. Simply enter your email here and we will send you an email alert.

Invalid email

Watch it

Takahashi FOA-60 fluorite apochromat complete version with cradle, finder bracket and 6x30 optical finder. Fluorite doublet apochromat with 60 mm objective lens and 530 mm focal length (F/8.83). The most corrected of any Takahashi refractor!

Recently we have seen a spread of compact, short focal length refractors widely used for astroimaging. Unfortunately those instruments show poor performance when used in visual observations at high magnification. The Takahashi FOA-60 has been designed instead to deliver best performances both in visual and imaging.

The FOA acronym stands for Fluorite Ortho-Apochromat. Optical design of the FOA-60 includes a widely spaced apochromat doublet with front calcium fluoride lens and rear crown capable to deliver a very high polychromatic Strehl Ratio of 96.1%. The wide lens spacing allows for a very high correction of spherochromatism.

There is also an optional flattener 0.93x designed to shorten a little bit the focal length to 495 mm (F/8.25) that is capable to deliver 10 micron stellar images on the whole imaging circle of 44 mm. When the FOA-60 is used in combination with the dedicated flattener you get a fantastic instrument for astronomical imaging ad also for birdwatching.

When used in combination with the optional Extender 1.7x R the FOA-60 transforms into the FOA-60Q, an F/15 flat field apochromatic refractor with a polychromatic Strehl Ratio 99,8%! It is the highest value of the full Takahashi refractor lineup, even higher than the TOA design. This excellent performance is valid on the whole image circle of 44 mm and in the full visual spectrum from 436 nm to 656 nm. The use of the Extender 1.7x R allows also to keep the instrument very compact (645 mm only with dew shield fully retracted, 705 mm with dew shield fully extracted).

Takahashi, perfection exists!

Technical specifications

  • Diameter: 60 mm
  • Focal length: 530 mm
  • Focal ratio: F/8.83
  • OTA length: 510 mm only with dew shield fully retracted, 570 mm with dew shield fully extracted.
  • 2" and 1.25" eyepiece holder included.
  • Complete version includes TKA02420G cradle, TKA00562 finder bracket and TKA00551 6x30 optical finder.
  • Weight: 1.8 Kg for the whole OTA, cradle, finder bracket and 6x30 optical finder included, 1.0 Kg for the OTA only.

Customer ratings and reviews

Nobody has posted a review yet

30 other products in the same category: