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For Sale
Status: Active  Advert Category: Accessories  Advert # 133242
Astro Physics CCDT67 0,67x Reducer 2"
The reducer is in "like new" condition, in original packaging, used two times only.

Optimized for scopes ranging from f/9 to f/18 focal ratio. The 2-element cemented design transmits close to 99% of the incoming light over the range of 420 to 700 nm. The focal length of the telecompressor optics is 12". For refractors, the field is compressed by 0.67x.
This optic is not recommended for telescopes with f/ratios below about f/8-9.
The CCDT67 design allows full corner-to-corner illumination up to an 8300 or APS-C size chip with most catadioptric telescopes. This design does not add coma to the wavefront, and thus, can be used with all flat-field and coma-free telescopes such as Maksutov-Cassegrains, Schmidt-Cassegrains, Ritchey-Chretiens and refractors. The inherent resolution of the telescope is not compromised when using this compressor.

-- Barrel size: 2"
-- Free aperture: 44mm
-- Camera side thread: M48x0.75 male (2" filter thread)
-- Telescope side thread: M48x0.75 female (2" filter thread)
-- Optimal back focus: 85 mm - if you change the distance, the kompressor factor will change. You can change the
distance between M48 connection thread to the sensor from 70mm to 90mm with good results.
-- Focal reduction: 0.67x - f/8 becomes f/5.3, f/9 becomes f/6
-- Fully illuminated and corrected field diameter: 29mm

https://www.teleskop-express.de/shop/product_info.php/language/en/info/p4955_Astro-Physics-CCDT67-0-67x-Reducer-2----e-g--for-GSO-RC.html

http://www.astro-physics.com/products/accessories/photo_acc/photo_acc.htm#ccdt67
Price: 180
Posted on: 2018-01-03 10:27:14
Last Updated on: 2018-01-03 10:27:14
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Contact: venzibo   (user details & view my other adverts)
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Location: Sofia, Bulgaria (view map of area)

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UK AstroBuySell Sponsors
Serving the needs of telescope makers dew control, cables, wireless, accessories Click here to visit Telescope House The best astronomical accessory you'll ever buy! digital control of motorized focusers and rotators hard to find astronomy equipment Telescopes, Cameras, Filters, Adapters Observatory Dehumidifiers Ireland's fastest growing on-line astronomy shop
Click to visit us! try a telescope for a week or two dew, focuser, power controls Experts in Astronomy Workshops, Tutorials, Guides, Books on-line astronomy store Amateur Astrophotography Magazine North Star Astronomy second hand astro-modified Canon 450D cameras
203mm f12 apochromatic refractor EQ Mount Tuners & Much More! Bringing the night sky to you Astrofarm Knowledge Observatory France Click here to visit our website! Moonraker Telescopes - handmade in the UK SCTelescopes Carbon fiber products Making your Night's Viewing a Little Easier Precision Engineered Astronomical Products

 


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