Logieberra
22-09-2012, 07:00 PM
Takahashi 0.8x Reducer/Flattener/Corrector
Takahashi part number: TKA70581 (refer to your Tak system chart for specifics, same as USA part number TMC1800)
Compatible with the entire Mewlon series - M180 / 210 / 250 / 300:
http://www.takahashi-europe.com/en/mewlon.accessories.php
All the Mewlon telescopes can be equipped with a focal reducer, also acting as field flattener. This reducer makes it possible to reduce the focal length and offer a better general-purpose focal ratio. Essential for photographic use with the Mewlon series. Produces a flatter field and faster F-ratio for imaging.
Mewlon 210: The original focal length of 2415mm and focal ratio of f/11.5 changes to 1961mm focal length and f/9.3 focal ratio. The image circle is now enlarged to 39mm and the field of view to using the reducer becomes 1.2 degrees.
Mewlon 250: The original focal length of 3000mm focal length and focal ratio of f/12 changes to 2307mm focal length and f/9.2 focal ratio. The image circle is increased to 42mm and delivers a 1 degree field of view.
Mewlon 300: The original focal length of 3572mm changes to 2739mm and the focal length of f/11.9 changes to f/9.1. The image circle is enlarged from 25mm to 42mm and the the field of view becomes 45 arc minutes in diameter.
Purchased November 2011 - MINT
AEC Price: $452
USA Price: $490
Sell for $275.00 (buyer pays shipping + insurance).
Takahashi part number: TKA70581 (refer to your Tak system chart for specifics, same as USA part number TMC1800)
Compatible with the entire Mewlon series - M180 / 210 / 250 / 300:
http://www.takahashi-europe.com/en/mewlon.accessories.php
All the Mewlon telescopes can be equipped with a focal reducer, also acting as field flattener. This reducer makes it possible to reduce the focal length and offer a better general-purpose focal ratio. Essential for photographic use with the Mewlon series. Produces a flatter field and faster F-ratio for imaging.
Mewlon 210: The original focal length of 2415mm and focal ratio of f/11.5 changes to 1961mm focal length and f/9.3 focal ratio. The image circle is now enlarged to 39mm and the field of view to using the reducer becomes 1.2 degrees.
Mewlon 250: The original focal length of 3000mm focal length and focal ratio of f/12 changes to 2307mm focal length and f/9.2 focal ratio. The image circle is increased to 42mm and delivers a 1 degree field of view.
Mewlon 300: The original focal length of 3572mm changes to 2739mm and the focal length of f/11.9 changes to f/9.1. The image circle is enlarged from 25mm to 42mm and the the field of view becomes 45 arc minutes in diameter.
Purchased November 2011 - MINT
AEC Price: $452
USA Price: $490
Sell for $275.00 (buyer pays shipping + insurance).