Click on image for larger version.
||NGC 246 is a rather lonely and perhaps large planetary nebula in
Cetus. In this example the distorted sphere of gas has many thin and
thicker regions giving it an irregular "texture." Like most spherical
clouds of gas the outer edges seem brighter than the center which appears
void. This is a perspective effect in that more line-of-sight gas is observed
towards the outer portions.
RC Optical Systems telescope Operating at f/8.4
Paramount ME Robotic Telescope Mount
SBIG ST10XME CCD camera with color filter wheel
color production was used to create this image.
Luminance = 90 minutes
Red = 10 minutes
Green = 10 minutes
Blue = 10 minutes
The central star of this nebula is actually two stars close in
angular separation. Most likely line-of-sight, but the pair could be
a binary star system? Unfortunately the bloom of the main star destroyed
this companion. Instead of trying to reconstruct it after deblooming-
a choice was made to present this as a single round star.
Taken in poor seeing. The guide star was fainter than 13.5- making
color acquisition very difficult. In fact, the color data was *hand corrected*
while the guider was running (since it was having so much trouble). The result
was better than the intrinsic guiding- but very poor indeed (errors of 1-2.5
Minimum credit line: Jeff Cremer/Adam Block/NOAO/AURA/NSF
RETURN to the PLANETARY NEBULAE page.
BACK to main Best of AOP page.
Would you like to
like this? Click here.
Return to NOAO Home Page