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Old 01-06-2010, 02:18 PM
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pmrid (Peter)
Ageing badly.

pmrid is offline
Join Date: May 2008
Location: Bribie Is.
Posts: 3,128
HOTECH SCA Field Flattener

Hi to all users of these devices. Because there was no documentation with my new HOTECH and nothing on their web site about this issue, I wrote to them recently asking for clarification of the distance that had to be maintained between the SCA and the imaging plane of the CCD/DSLR etc. They have sent a reply which I thought I would share for the benefit of IIS members:

" ..... The SCA Field Flattener requires 55mm distance from the shoulder of the T-thread to your QHY8. You will have to use additional T-thread ring to add up the difference for optimal imaging result. ... "

OK. there you have it.

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