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Subject |
Sh2-171 Emission Nebula in mapped color |
|---|---|
Location |
Anza, California |
Date |
October 2011 |
Optics |
Borg 71FL. Focal Length 284mm at f4 |
Mount |
AP900GTO |
Camera |
QSI 683WS-8 |
Filters |
Astrodon Narrowband Filters: Ha 3nm, Oiii 3nm, Sii 5nm |
Guiding |
SBIG ST-402ME on Borg 50. Focal Length 250mm at f5 |
Exposure |
Sii (5nm): 16 x 15 minutes sub-exposure = 240 minutes, Bin 1x1. Mapped as Red Ha (3nm): 52 x 15 minutes sub-exposure = 780 minutes, Bin 1x1. Mapped as Green. Also used as Luminance Oiii (3nm): 24 x 15 minutes sub-exposure = 360 minutes, Bin 1x1. Mapped as Blue |
Software |
MaxImDL 5, CCDStack 2, Photoshop CS5 |
Notes |
To contact me, please send email to: sam (at) isismagna (dot) com |