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NGC 6826 Blinking Planetary Nebula

Posted: Fri Sep 16, 2022 10:43 am
by menardre
The Moon rises after midnight so I decided to re-image the Blinking Planetary Nebula (NGC 6826). I imaged this a few years ago but was not satisfied with the result. NGC 6826 is in Cygnus, so it is high in the sky at 8PM when I started imaging. I was able to capture 150 frames (2 minute exposures, -10C, binned 2x2, gain 100). When the Moon rose it was bright but fairly distant from Cygnus. I shutdown around 2AM after taking flats.

NGC 6826 is small (only 0.2 light years in diameter), so the image attached is cropped. You can just barely make out the outer shell of gas. The central star is on O-type star.

Roger
NGC 6826 Master_DBEdiv_Autocolor_BN_ArcSInh_NXT_EzSR_SR_SR_MLTsharp_crop_Sat_MLTsharp_Crop.jpg
NGC 6826 Master_DBEdiv_Autocolor_BN_ArcSInh_NXT_EzSR_SR_SR_MLTsharp_crop_Sat_MLTsharp_Crop.jpg (125.78 KiB) Viewed 125 times

Re: NGC 6826 Blinking Planetary Nebula

Posted: Fri Sep 16, 2022 3:28 pm
by Pete
I'd never even attempt something only 25 arc-seconds in size. Seeing is normally 3 or 4 arc-seconds.