NGC 7217

Full Size: 3120 × 2340

NGC 7217

Telescope: Pentax 125 SDP, rented from Centro Astronomico La Palma (www.athos.org)
Mount: 10Micron GM1000, rented from Centro Astronomico La Palma (www.athos.org)
Focal length, f/ratio: 800 mm, f/6.4
Total exposure time: 185 min
CCD, guiding: STF-8300M
Date, location: 04.10.2016, Finca Lomada del Pinar, Puntagorda, La Palma
Author: Andreas Masche
Comments: B-RGB (The L-Channel was useless due to very poor seeing)
R = 18 x 300 sec, G = 12 x 300 sec, B = 7 x 300 sec
R, G, B = 9 x 300 sec each
Processing Flow: PI: Preprocessed Images: ImageCalibration, StarAlignment
Processing Flow: PI: Each Channels: ImageIntegration
Processing Flow: PI: Color Channels: ChannelCombination (RGB)
Processing Flow: PI: RGB: BackgroundNeutralisation, ColorCalibration, HistogrammTransformation
Processing Flow: PI: RGB: ChannelExtraction (L, a, b)
Processing Flow: PI: Luminance (Blue Channel): HistogrammTransformation, DBE
Processing Flow: PI: BRGB: ChannelCombination (Lab), DynamicCrop, DBE
Processing Flow: PS: BRGB: Corrections (Curves, Saturation)