Uploads from evansg, tagged competition:astrophoto=2010

Crescent Nebula - Ngc 6888

nobody@flickr.com (evansg) — Mon, 12 Jul 2010 11:05:00 -0700

evansg posted a photo:

The Crescent Nebula (NGC 6888 or Caldwell 27) is an emission nebula in the Cygnus constellation, about 5000 light years away. It is formed by the fast stellar wind from the Wolf-Rayet star WR 136 (HD 192163) colliding with and energizing the slower moving wind ejected by the star when it became a red giant around 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.

Scope: Skywatcher ED80
Camera: ATIK 314L
Guiding: TS OAG9, SSAG
Filters: Baader LRGB + Ha
Total exposures: 8h
Location: Mt. Parnonas, Greece
Date: 9 & 10 Jul 2010

Eagle Nebula - M16

nobody@flickr.com (evansg) — Wed, 23 Jun 2010 11:29:28 -0700

evansg posted a photo:

The Eagle Nebula (catalogued as Messier 16 or M16, and as NGC 6611) is a young open cluster of stars in the constellation Serpens, discovered by Jean-Philippe de Cheseaux in 1745-46. Its name derives from its shape which is resemblant of an eagle

Scope: Skywatcher ED80 @ f7.5
Camera: ATIK314L
Mount: HEQ5 Pro
Guiding: TS OAG9, SSAG
Filters: Baader LRGB & Ha
Location: Gytheio Lakonias, Greece

Lagoon Nebula - M8

nobody@flickr.com (evansg) — Sun, 25 Apr 2010 01:21:00 -0700

evansg posted a photo:

The Lagoon Nebula (also known as Messier Object 8 (M8) and NGC 6523) is a giant interstellar cloud, classified as an emission nebula and H II region, in the constellation Sagittarius. At an estimated distance of 4,100 light-years, the Lagoon is one of only two star-forming nebulae faintly visible to the naked eye from mid-northern latitudes. In binoculars, the Lagoon is a distinct oval cloudlike patch with a definite core, like a pale celestial flower. The nebula has a fragile star cluster superimposed on it, making this one of the leading celestial sights of summer night skies.

LRGB + Ha light frames - stack of total time 250 mins
Telescope: Skywatcher ED80
CCD: ATIK 314L Mono
Location: Gytheio Lakonias, Greece

Wirlpool Galaxy - M51

nobody@flickr.com (evansg) — Tue, 06 Apr 2010 11:13:20 -0700

evansg posted a photo:

The Whirlpool Galaxy (also known as Messier 51a, M51a, or NGC 5194) is an interacting[4] grand-design[5] spiral galaxy located at a distance of approximately 23 million light-years in the constellation Canes Venatici. It is one of the most famous spiral galaxies in the sky. The galaxy and its companion (NGC 5195) are easily observed by amateur astronomers, and the two galaxies may even be seen with binoculars.[6] The Whirlpool Galaxy is also a popular target for professional astronomers, who study it to further understanding of galaxy structure (particularly structure associated with the spiral arms) and galaxy interactions.

Scope: Vixen VC200L @ f6.4
Camera: ATIK 314L
Filters: Baader LRGB +Ha
Exposure: L: 180 Mins
R: 120 Mins
G: 90 mins
B: 90 mins
Ha: 60 mins
Total: 9 Hours

Subframes: 5 mins
Calibration Frames: Bias, Dark, Flat, Flat Dark
Processing: CCDStack, Photoshop cs3
Location: Gytheio Lakonias Greece