Image spcefications:
- Exposure: 18 hours HaO3LRGB = 420:340:180:50:50:50
- Camera: SBIG ST-8300M, Filters: Baader LRGB, Astrodon 5 nm H-alpha, Astrodon 3 nm O3
- Telescope: TEC 140 with field flattener focal distance 1017 mm
- Mount: Losmandy G11
- Guiding: SBIG Off Axisguider, Starlight Xpress Lodestar autoguider and PHD
- Location: Ha: Overveen, Netherlands
- Location: O3, LRGB: Etoile St.Cyrice, France
- Date: Ha: 16-22 April 2018
- Date: O3, LRGB: 24-25 February 2020
Image acquisition with ImagesPlus 6.0 Camera Control:
- 21 H-alpha of 20 min, binned 1x1
- 17 O3 of 20 min, binned 1x1
- 12 Luminance of 15 min, binned 1x1
- 5 Red, 5 Green and 5 Blue of 10 min, binned 1x1
- 20 Flat fields for each filter with flatfield panel
- 20 Dark frames of 20, 15 and 10 min
- 50 Bias frames
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