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Old 22-08-2011, 07:36 PM
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peeb61 (Paul)
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QHY8L and Coma Corrector

Apologies if this question has been answered but...
Having just purchased a QHY8L, I wish to use this with my Bintel 8" f/4 Newt scope and because I use a Baader Coma Corrector, I was just wondering what the distance needed to happily bring this rig to focus without attracting Coma. I know the distance from the chip of the QHY8L to the outside of the glass is 20mm but there on?

Many thanks in advance.

Paul
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Old 22-08-2011, 07:47 PM
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multiweb (Marc)
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Quote:
Originally Posted by peeb61 View Post
Apologies if this question has been answered but...
Having just purchased a QHY8L, I wish to use this with my Bintel 8" f/4 Newt scope and because I use a Baader Coma Corrector, I was just wondering what the distance needed to happily bring this rig to focus without attracting Coma. I know the distance from the chip of the QHY8L to the outside of the glass is 20mm but there on?

Many thanks in advance.

Paul
You need another 35mm to the back of the MPCC +/-2mm.
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Old 22-08-2011, 08:24 PM
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peeb61 (Paul)
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Thanks Marc for your response,
I will have to look into extension tubes, I did notice that you mentioned in one of your posts that you yourself has purchased the same camera? How did you get around this gap?

Paul
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Old 22-08-2011, 08:44 PM
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multiweb (Marc)
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I have an old QHY8. The sensor is only 6mm inside the camera body and the nosepiece is approx. 13mm. I got a variable custom adapter made here.
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Old 22-08-2011, 09:30 PM
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peeb61 (Paul)
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Thank you Marc,
I will look into this or something close to it anyway.

Paul
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