Celestron 9.25 and Orion Sirius Mount
Posted 07 June 2013 - 03:53 AM
What would I need to make this pair work?
The mount is rated for 30lbs and the ota is 20lbs. With my Nikon D800 I figure I will be pushing it close but not over. I noticed sites sell the 9.25 with the AVX and CG-5 mounts which have a 30lb limit as well so I am hoping this setup will work for AP
Posted 08 June 2013 - 09:54 AM
I tried to max out my CGEM and it was not 'fun' to image with. If AP is your goal I would get a widefield refractor and a CG-5. Once you learn short focal length AP, you can consider jumping up to long focal lengths.
Posted 08 June 2013 - 08:34 PM
You're going to need to carefully balance everything and will probably need vibration damping pads for the tripod legs. An electric focuser will eliminate touching the scope and causing vibrations when focusing.
Posted 09 June 2013 - 01:49 AM
a C9.25 has a focal length of 2.35 meters. more than double. so everything will have to be 2.35X more accurate, etc.
my experience.. don't even try it. a CGEM is marginal for a C9.25 at native FL.
Posted 09 June 2013 - 09:27 PM
Posted 09 June 2013 - 10:58 PM
I have both a 9.25 and the Sirius mount and you will have to make sure it's really well balanced. I use this setup for visual only.
Posted 10 June 2013 - 12:15 AM
But most aren't. So be careful.
Also the cost of the Hyper star and conversion kit is way more than the cost of the C9.25 itself.
But yes a Sirius will work fine that way. You're only talking about 470mm focal length.
Posted 10 June 2013 - 03:38 PM
Posted 30 June 2013 - 08:52 PM