Image spcefications:
- Exposure: 4 houres, LRGB = 150:30:30:30 minutes
- Camera: SBIG ST-8300M, Temp -25 ° C, Baader LRGB filters
- Instrument: TEC 140, focal distance 980 mm
- Mount: Losmandy G11
- Guiding: TS Off Axisguider, Starlight Xpress Lodestar autoguider and PHD
- Location: Etoile St. Cyrice, France
- Sky Quality Meter: 21,42
- Temperature: Ambient: 9° C
- Date: 3 and 4 may 2011
Image acquisition with ImagesPlus 4.0 Camera Control (all at -25° C) with dither:
- 6 Luminance of 15 min, binned 1x1
- 6 Red + 6 Green + 6 Blue of 5 min, binned 2x2
- 20 Flat fields per channel with Aurora Flatfield panel
At home, camera in fridge:
- 20 Dark frames of 15 min + 20 Dark frames of 5 min
- 20 Flat darks (per channel) + 20 Bias frames
Processing in ImagesPlus 3.82:
- Automatic Image Set Processing per channel:
calibrate, normalize, grade, align and combine (Min Max Excluded Average)
- Reduce High Low Pixel
- Digital Development (DDP)
- Deconvolution Adaptive Richardson Lucy
Processing in Registar:
- Align Luminance, Red, Green and Blue results
- Combine RGB
Processing in Photoshop CS3:
- Combine Luminance and RGB with Lab Color (Split RGB and Combine Lum, a, b)
- Curves
- Levels
- Selective Color
- Plugin: Noise Ninja
- Noel Carboni's astronomy tools: Star size reduction
|
