Description
Emission nebula with embedded star cluster in constellation Cassiopeia, size 60'x60'.
|
Click on image to enlarge! |
|
Date |
September 15 & 16 & 21 & 22, 2007 |
|
Telescope |
Pentax 75 SDHF @f/6.7 (f=500mm), Losmandy G11 mount, FS2 drive unit |
|
CCD Camera |
ST-2000XM at -15°C |
|
Exposure |
Hα mosaic consisting of 5 images with different exposure times (7200s - 12000s), 84 frames in total, each 600s. Total exposure time 14 hours |
|
Localisation |
Hofheim / Rhein-Main area |
|
Conditions |
Light pollution |
|
Note |
Averag conditions, partly cloudy. Different exposure times due to changing conditions. Noisy ration in the frames varies. |
|
Image Processing |
RC, processing with MaxIm and Photoshop |
|
© Copyright 2002-2007 by Jürgen Stein |