Author Topic: CGE Pro vs G11 (or G11GT) for astrophotography  (Read 1137 times)

ruesonecrai

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Re: CGE Pro vs G11 (or G11GT) for astrophotography
« Reply #15 on: January 26, 2018, 03:14:39 AM »
I have never ever seen a mount give under 0.4 arc seconds. I wonder if my seeing is just that bad around here or I keep getting lousy mounts?

I got the CGE Pro running last night. It's better than the CGEM DX (which I guess wasn't THAT bad) but not twice as good.

olexecin

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Re: CGE Pro vs G11 (or G11GT) for astrophotography
« Reply #16 on: January 26, 2018, 08:34:37 AM »
There's something odd in the numbers Eliekh posted. The guide camera has 2.9 micron pixels and the guide scope has 400mm of focal length. My calculation says that's about 1.5 arc seconds per pixel rather than what I see in the graph - less than 1.2. Now if that guide camera is binned, then it's three arc seconds per pixel. That would quite a bit more arc second guiding error than what's in the graph. As far as the PE is concerned, I'd like to see how it was measured because it's about twice as good as what my Paramount gets and 4 times as good as the spec they publish. My bet is on the idea that the PHD setup is just wrong in some manner. I'm not sure how much I want to bet though.
Rgrds-Ross

Joseph Garrison

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Re: CGE Pro vs G11 (or G11GT) for astrophotography
« Reply #17 on: February 09, 2018, 08:00:58 AM »
Hi Dan:I have been using the CGE Pro for about 3 years now. It is permanently mounted in the observatory and gets used every clear night. The load it carries is seasonal. Right now, it has the Tak FSQ 106 on it, but during galaxy season, it swings the Edge 14 with a Moonlite focuser, camera, FW and a second camera and lens riding piggyback for a total of about 85 pounds. Guiding is almost always less than 0.5" RMS on each axis and on good nights, I can get less than 0.25". DEC backlash can be an issue, but it is easy to adjust. PM me if you want instructions.Knowing what I know about my CGE Pro, it would be no contest for me. I know several others with the same mount and every one is completely happy with it. It has some quirks to be sure, and it is heavy. But it does break down into manageable parts.Last year, I got mount envy and *almost* decided to sell the CGE Pro and get an AP1100. After much soul-searching, I just could not bring myself to abandon a perfectly good mount that has performed so well. So I decided to keep it.The only down side (and it's a pretty big one IMO) is that Celestron has discontinued the mount and parts may become scarce in a few years. But if the price really is right, and as reliable as my mount has been, if it were me, I would keep the CGE Pro.