Description
The dark nebula vdB142 is embedded into the HII region. Constellation Cepheus, diameter of the HII region is 50'.
|
Click on image to enlarge!
|
|
Date |
August, 4 & 12 & 13 & 24, 2007 |
|
Telescope |
Vixen VC200L @f/6.9 (f=1380mm), Losmandy G11 mount, FS2 drive unit |
|
CCD Camera |
ST-2000XM at -15°C |
|
Exposure |
Upper image: LRsGB composit with L=Hα and synthetic G frame. H&alpha = 17x600s (1x1), OIII = 12x600s (1x1). Lower image: LRGB with L = Hα, G = OIII and B = 9x600s (1x1) |
|
Localisation |
Hofheim / Rhein-Main area |
|
Conditions |
Good conditions, light pollution |
|
Note |
Blue halos surrounding bright stars in the lower image due to chromatic aberation of the optics |
|
Image Processing |
RC, processing with MaxIm and Photoshop |
|
© Copyright 2002-2007 by Jürgen Stein |