NGC 6888 - A light crescent (or dietary croissant...) (Christophe Perroud)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Crescent nebula · NGC 6888 · Sh2-105

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NGC 6888 - A light crescent (or dietary croissant...)

Powered byPixInsight

NGC 6888 - A light crescent (or dietary croissant...)

Last days have been very hot here in Western Europe (up to 36°C in my town) and temperature didn’t drop so much during the night. Despite the summer solstice isn’t the best period to image I cannot miss a new opportunity to test my gear. Unfortunately, the wind was very strong on Friday night and gave me little disappointment while checking recorded images on my DSLR after my 2-hours-session: almost half of them showed « double-stars ». Looks like the finderscope and autoguider was shaken by wind blasts, giving the mount bad correction impulses (I guess…). I’ve made only 180s exposure to minimize the impact of the wind but it saved only a few amount of data!

Well, this is my 2nd test with the TSA-120 atop the AP 600E using the autoguider Lacerta MGEN and I’m still learning how to setup them all together with less effort and be ready to shot within one hour. NCG6888, The Crescent Nebula in constellation Cygnus, is probably not the easiest target to play with a DSLR, as the emissions are faint. But I decided to keep this one in target, as I never tried it before!

I also didn’t spend to much time for postprocessing. I used PixInsight for calibrating, stacking and processing the data. Final touch-up under Photoshop, as usual.

This Crescent definitely needs more and more integration time to reveal subtile details inside the nebula! But I’m pretty happy with this result, especially background and stars colors. On the bottom left, the white-blue and yellow-orange are really beautiful. Thanks for looking at my new picture, feel free to comment and clear sky to you all.

Cheers,

Christophe

Takahashi Refractors
Imagers of Switzerland

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Status	Advanced success
Started	...
Astrometry.net job	2770368
PixInsight job	P3N4DV99RHEEOB9UUL61UXHOO5GW3G6X
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h12m09s.513
RA (top/left)	20h09m55s.928
RA (top/right)	20h10m24s.387
RA (bottom/right)	20h14m20s.937
RA (bottom/left)	20h13m55s.618

Dec (center)	+38°20′04″.70
Dec (top/left)	+38°52′53″.41
Dec (top/right)	+37°43′38″.58
Dec (bottom/right)	+37°47′06″.66
Dec (bottom/left)	+38°56′30″.92

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NGC 6888 - A light crescent (or dietary croissant...)

NGC 6888 - A light crescent (or dietary croissant...)

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NGC 6888 - A light crescent (or dietary croissant...)

NGC 6888 - A light crescent (or dietary croissant...)

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