View Full Version here: : Adaptive optics again
telecasterguru
06-03-2011, 08:53 PM
I know that this has been talked about before but should I think about AO for my 10" GSORC?
With a focal length of around 2m it should be a candidate but am a little confused about how they work.
Also, I think they are expensive so worried about the cost to benefit ratio.
Would I need a specialised camera as well as the AO unit? Anything else?
Any thoughts?
Frank
Tandum
06-03-2011, 09:18 PM
Frank, Real AO systems use a flexible mirror to correct the image and a laser to measure the atmospheric variations. Consumer AO systems like the starlight job use a tilt tip optic window and rely on guide camera feedback for input. So it would work best with a very sensitive guide camera like a loadstar so you can get really short guide exposures to feed back into the system.
Not sure what benifit you would see in your situation.
robin.
cfranks
08-03-2011, 08:43 AM
Robin, I suspect he is talking about something like http://www.starlight-xpress.co.uk/OAG.htm
Frank, I have one of those and am just in the process of getting it set up. They use a plane-parallel chunk of glass, 12mm thick that the 'twist' with 4 servo motors under control of a guide camera. The light passing through it to the camera is thus slightly deviated. A much quicker response to guiding commands than trying to move the whole mount as I normally do.
Charles
multiweb
08-03-2011, 08:46 AM
I have the SXV-AO-LF (http://www.starlight-xpress.co.uk/SXV-AO.htm) . Was a bit fiddly to make it work (first generation) but from the few tests I did on my C11 at prime focus there was a huge difference. So yes, a definite candidate for moderate to long FL work. Not cheap but worth it IMHO.
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