Van Den Berg 142 in IC1396
(aka The Elephant Trunk Nebula)
To see the faint detail in this
image, adjust your monitor's brightness and contrast to clearly show all 17
steps in this grayscale chart:
Too big? Try this smaller image: vdb142_950x702
Look here for a cropped and enlarged version: vdb142cropped
- Telescope:
Takahashi FS-152 6" f/8 fluorite refractor reduced to f/6
- Zeiss
II German Equatorial Mount
- Santa
Barbara Instrument Group ST-8E NABG CCD camera (1530 x 1020 pixels, 9 x 9mm, monochromatic, 16 bit, 13.8 x 9.2mm array)
- CWF8
color filter wheel with Ha and IR-blocking red, green and blue dichroic filters
Exposure
Information:
- Date:
Sunday October 14, 2001
- Location:
Mt. Pinos, CA
- Elevation:
Approx. 8300', OAT +39F
- Composition:
LRGB with L=Ha+R, R=Ha+R,
G, B
- Ha:R:G:B
= 90:20:20:30 minutes. Total exposure time: 160 minutes
- All
subexposures were 10 minutes each