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Old 10-02-2009, 04:57 AM
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iceman (Mike)
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Join Date: Sep 2004
Location: Gosford, NSW, Australia
Posts: 36,799
Thanks guys, appreciate your feedback.

Quote:
Originally Posted by peter_4059 View Post
That's a nice image Mike. As Dennis says the image scale is impressive. How do you manage to find Saturn with that focal length? I've found the 5x powermate/10" newt/Neximage quite a challenge.

Happy Birthday,

Peter
The main problem is the loss of light, and of course needing the seeing to be more stable to get a satisfactory image.
It's much tougher this year than in previous years due to the rings closing up.

Quote:
Originally Posted by AlexN View Post
Peter - When I've imaged Saturn/Jupiter at 6000~8000mm, I take the camera out, and use a reticule EP with a parfocalising ring to center the planet in the field of view, then slot the camera back in... from there, I almost always have the planet on the chip (or at least, part of the disc) if not, defocusing about 3mm will turn the planet into a big airy disc, then if the planet is within 1x its own diameter of the field of view, you'll see the airy disc in the field of fiew...
That's generally the approach I try to use too.

Quote:
Originally Posted by gregbradley View Post
Awesome image Mike, I love it.

I am gearing up to get into planetary imaging myself. I have dabbled in the past with a Nexstar 11 GPS, a Tak FS152 and an RCOS 12.5 inch. The Nexstar 11 was the best.

Still evaluating the ideal camera. SKYnyx seem good as do some Point Grey Research cameras and the DMKs. Any advice on which one to get?

Paul has been giving me some excellent guidance.

Greg.
You really can't go wrong with either the Skynyx or the Pt Grey cameras. Both will do an excellent job. If you don't have firewire, the Skynyx is probably the more convenient because it's USB.

I look forward to your dabbling in planetary! The nexstar 11 will be great for planetary with good resolution and focal length.


Thanks again.
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