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Hi! I tried to do some widefield imaging for a change. 25x600s h-alpha with ASI1600MM-C and Canon EF 70-200mm f/4L (135mm). I piggybacked them on Taurus Hill Observatory's Paramount ME mark I. Luckily the main scope has free vixen dovetail bar on top of it so it was easy to attach. Also I replaced my laptop with much smaller imaging PC (LattePanda), it worked really well with SGP which suprised me because its so small. I will definedly use it more in the future for grab and go systems.
To me NGC7822 looks like a question mark.
Some of you may have seen my post yesterday of this object in wide field taken with the 135mm Samyang (@ f/2) and a Canon 70D (unmodded). That same night I run the camera both before and after the meridian flip but the framing then became quite different (I focused on maintaining the framing of the 5" refractor sitting side by side and had no separate control of the Samyang). So, I decided to process the data from after the flip separately as I had quite a large number of exposures to keep the S/N ratio high and did not want to do a major crop. When I now processed the data I collected after the flip (81 x 1 min at ISO1600), I more or less consciously put more emphasis on bringing out any surrounding nebulosity and not suppressing the star filed, and the result is remarkably different. I post the image from after the flip (top) and before the flip (bottom = same as I posted recently).
Maybe it shows that I am not very consistent in my processing and run more on inspiration than a consistent workflow. Maybe I should be worried about this?
Stacking in Nebulosity 4 and processing in PS CS5.
Do you guys also like the top image better? I think I do - at least right now.
Finally last night the sky cleared, the moon was below the horizon and there was 6-7 hours of astro-darkness up here. So here is the first data I have captured this season.
Gear: ES 127ED apo, Canon 60Da, EQ8 mount. 31 x 8 min, so 4.1 hours. Stacked in Nebulosity 4 and prosessed in PS CS5
I also had my Samyang 135 f/2 with a Canon 70D side by side (hopefully 100+ good 1 min exposures). Will have a look at that data later today (when I may be exposing again, weather permitting)
All comments and suggestions most welcome!