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Jeremy's Camel's Eye with the club C11 EdgeHD

ZWO EAF Request for feedback
Southern Maine Astronomers •3 replies•19 views
Dean Ostergaard avatar
Dean Ostergaard avatar
Great image! The color is amazing. I see more hints of additional fine details in the intricate curls within the nebula that I bet with a few more hours of integration you would be able to draw out.

The stars are really sharp. Did you focus manually or were you able to attach a focuser?

I captured the Hidden Galaxy with the C8 after which I noticed you had captured earlier this year. I stink with manual focus and am seriously considering getting an adapter to attach my ZWO EAF before I try another session on it. I embedded an image from the C8 in my description of my version of The Hidden Galaxy.
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Jeremy Wright avatar
Jeremy Wright avatar
I saw your hidden Galaxy, looks like you had the reducer as well?  Nice image.

 I suggest getting an eaf, makes a huge difference. There is definitely focus drift through the night, I can see when I blink through images sometimes where I refocused. The auto focusing routine is excellent.

I did use an eaf on the c11. I had to purchase an adapter but it works great. 

I used that funky off access guider that you saw me pull out of the shed.  Tried to use my zwo guider but didn't get any Stars. 

 Also I think I was just really lucky with the seeing.  Fwhm was an all-time personal record of 1.3 to 1.5. I couldn't believe it. Guiding RMS was 0.4 to 0.5.  My pixel scale was 0.27 arcseconds per pixel, so I was definitely oversampled. 

I also cheated and used blur exterminator to help reduce star size, but it was pretty good anyway.
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Dean Ostergaard avatar
Dean Ostergaard avatar
"Also I think I was just really lucky with the seeing.  Fwhm was an all-time personal record of 1.3 to 1.5. I couldn't believe it. Guiding RMS was 0.4 to 0.5. "

Last Thursday and Saturday were both good nights here.  Managed to polar align to within less than 30" in just minutes, HFRs averaging 2.0 and guiding RMS averaging 0.54 ArcSec. 

I think I'll just go ahead an buy that EAF bracket to have for the C8. Not having one is definitely a deterrent to using it more. Believe it or not it tracks really well on my AM3 with a counterweight. I wasn't using the C8 those nights but I probably should have.

I did use the 0.83x reducer. Probably not a great choice for that target but my first target those nights was the Cygnus Loop and the reducer was definitely needed to get the whole loop in the frame. I'm still processing those. I didn't consider that my Artemis produces images 3.5 times larger than my Uranus and it is bring my poor old MacBook Pro to its knees.
Jeremy Wright avatar
Jeremy Wright avatar
Haha, the larger sensors challenge the computers.  I gave up apsc size because each subframe was 50 MB.  Sticking with 4/3 sensor for now.  Also easier to get sufficient collimation for 4/3