IC4604 in Ophiuchus
Updated : 07 December 2004.
Click on image to get larger size (2000x1333, automatic resize in Internet Explorer)
CCD : STL11000M ABG 1x1 binning
Exposure time : 30:30:30:30 min LRGB (10 min individual exposures)
Date and Time : 12.08.2004
Instrument : Takahashi FSQ 106 f/5
Focal length : 530 mm
FWHM :
Filters : Astronomik LRGB filters
Image processing : sigma clip combine, darks, flat
Problems/comments : Further processing in Imageplus (LRGB combine, DDP) and Photoshop (levels and curves,
gaussian blur unsharp mask). Very colorful and dusty region in Ophiuchus.