About this Image
NGC2997 is a face-on spiral galaxies in the southern constelation Antlia.
It is showing very well defined spiral arms and displays a dynamic appearance, appealing by the red and blue knots tracing the arms.
The red knots are apparently diffuse gaseous nebulae in which star formation is just taking place, and which are excited to shine by its very hot young stars.
The blue regions represent young stellar populations which have formed some dozens of million years ago.
20 " Keller cassegrain in corrected secondary focus at f/9
|Camera||SBIG STL-11000M at -15C, 8-pos STL filter wheel|
|Date||May 01, 2008|
|Sky Conditions||dark skies, raw FWHM 1.3-1.5" temperature 15 C,|
C:R:G:B = 30:30:30:50 minutes (10-minute sub-exposures);
Maxim DL 4.5;