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Old 05-09-2012, 09:38 PM
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alpal
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Join Date: Jan 2012
Location: Melbourne
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Quote:
Originally Posted by RobF View Post
Yeah, I've posted on the QHY forums about this - the 12mm window could surely be much flatter, and some sort of OAG solution off the filter wheel or camera would be fantastic (probably someone has a patent it though suspect)
Hi Rob,
I think the QHYs could be improved a lot.

It's not only QHY - it's all those cameras out there.
People end up with ridiculously long optical trains to get the capability they want.
Newts are not really designed for imaging unless you get that camera sensor
in very close to the secondary mirror in some way.
Some imaging Newts. have a custom flattener built in to
overcome this problem.
The RCC I have ordered will actually require a 10mm spacer to get
it working properly which is not what I wanted but it will have to do for now.
The extra 10mm will put me further away from the secondary mirror.
Maybe the Atiks with a built in filter wheel have less back focus required?

The QHY9 will do me for now as I see every night with my telescope
as an experiment & training i.e. I will get to become proficient at Maxim DL & learn a lot - I hope.
If I'm still interested in 2 years time I may upgrade to a system with a large
full frame camera but that will require different optics too & would be much more expensive.
I am also intrigued by adaptive optics but I know that you need a bright - not always available star &
a super sensitive high download speed camera to make it work.
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