NGC7000_2009-08-30

Nebulae - NGC 7000

R.A.: 20h 59m 17.1s
Dec.: +44° 31' 44"

The North America Nebula (NGC 7000 or Caldwell 20) is an emission nebula in the constellation Cygnus, close to Deneb (the tail of the swan and its brightest star). The remarkable shape of the emission nebula resembles that of the continent of North America, complete with a prominent Gulf of Mexico. The North America Nebula and the nearby Pelican Nebula, (IC 5070) are in fact parts of the same interstellar cloud of ionized hydrogen (H II region). Discovered by William Herschel on October 24th 1786 from Slough England.

NGC 7000 – North America Nebula

Date/time:
31.08.2009 00:20 to 31.08.2009 04:30
Az./Alt. positions:
221° / 84° to 290° / 44°
Ambient conditions: 10°C, transparency 5/5, seeing 4/5
Location: Trier, Germany

Equipment:
Optics: TMB 92 SS f/5.5 with TSFlat 2
Mount: CGE
Guiding: selfguiding with ST-4000XCM
Camera: SBIG ST-4000XCM
Filter: IDAS LPS

Acquisition:
Software: Maxim DL 5
FOV, Image scale: 100.9 x 100.9 arcmin, 3.01 arcs/pixel
Sub-exposures: 3h 40min (22 x 10min) at –20°C acquired with auto dithering,
50 x 10min dark frames

Processing:
Images Plus 3.75. Calibration, stacking, DDP.
CS3: Small curves and levels adjustments, slight surface blur on dark lanes, High Pass filter applied only on
luminance layer from Lab space, color saturation using Color Match and Gabany´s method,
Carbonis Action´s star size reduction.

Comments:

The processing technique was used experimentally for the first time. I like the results.

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Information

Filename: nebulae/ngc7000_2009-08-30_full.jpg
Filesize: 2511944 Kb
Download limit: unlimited

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