Crescent Nebula NGC 6888 (Greg Meyer MD)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 29 b03 Cyg · 34 P Cyg · 37 gam Cyg · B343 · B344 · B347 · Crescent Nebula · IC 4996 · LBN 193 · LBN 194 · LBN 197 · LBN 203 · LBN 205 · LBN 206 · LBN 208 · LBN 209 · LBN 212 · LBN 215 · LBN 223 · LBN 224 · LBN 234 · LBN 236 · LBN 240 · LBN 241 · LBN 245 · LBN 248 · LBN 249 · LBN 253 · LDN 877 · LDN 879 · And 26 more.

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Crescent Nebula NGC 6888

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Crescent Nebula NGC 6888

Taken over the past 2 nights, 25 exposures, of 10 minutes each. Record heat hear in Phoenix, 111F, 44C today, and I'm amazed at what I was able to get with a telescope on my roof in the middle of the city, using the right equipment (filter) to screen out the light pollution, and a cooled astro camera that was able to cool the sensor to about 8 degrees Celcius last night.

The Crescent Nebula on the left. Wiki - The Crescent Nebula is an emission nebula in the constellation Cygnus, about 5000 light-years away from Earth and is 25 light-years across. It was discovered by William Herschel in 1792. It is formed by the fast stellar wind from the star WR 136 colliding with and energizing the slower moving wind ejected by the star when it became a red giant around 250,000 to 400,000 years ago. The result of the collision is a shell and two shock waves, one moving outward and one moving inward. The inward moving shock wave heats the stellar wind to X-ray-emitting temperatures.

Cloudy Nights
Radian Raptor 61

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Advanced success
Started	...
Astrometry.net job	4728970
PixInsight job	B48GXW2CS9ZYGJBCRW4P3ZRHH47AYV3G
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h17m37s.54
RA (top/left)	20h14m41s.91
RA (top/right)	20h32m03s.50
RA (bottom/right)	20h20m47s.16
RA (bottom/left)	20h03m25s.26

Dec (center)	+39°16′47″.0
Dec (top/left)	+36°30′27″.1
Dec (top/right)	+39°46′46″.2
Dec (bottom/right)	+42°02′33″.3
Dec (bottom/left)	+38°40′19″.6

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Crescent Nebula NGC 6888

Crescent Nebula NGC 6888

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Crescent Nebula NGC 6888

Crescent Nebula NGC 6888

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