Horsehead and Flame Nebula
Objects in image from left to right
- Constellation: Orion
- IC431 clipped on left edge
- NGC2024 Flame Nebula
- IC434, Barnard 33 Horsehead Nebula
- Field of view: 115.7 arcminutes wide x 86.8 arcminutes high at 4.34 arcsec/pix
- Image reduced from 1600x1200 to 1200x900 for website
- North is left and west is top
- Exposure: 12 images x 480 seconds per image (96 minutes total)
- CCD-TEMP: -30°C
- Astronomik Type IIc Luminance filter
- OBS-Location: Oregon Star Party (OSP), OR USA
- DATE-Local = August 31, 2008
- TIME-Local of first image = 3:03 AM
- TIME-Local of last image = 4:51 AM
- Object was low on the horzion starting at 9 degrees altitude at 3:03 AM rising to 27 degrees at 4:51 AM
- Twilight started at 4:43 AM
The following test pattern is to help you adjust your monitor to best view the CCD astro images.
The test pattern is used for adjusting monitor brightness, and contrast.
Adjust monitor brightness and contrast to see all 16 gray scale levels.
The most important adjustment when viewing astro images is to see the differences in all of the black bands.
© 1998-2008 David Haworth