IC 1396 – Elephant's Trunk Nebula
Date/time: 13.10.2009: 20:50 to 21:35 14.10.2009: 20:10 to 21:30 15.10.2009: 20:55 to 22:35
Az./Alt. positions: 39° / 79° to 6° / 82° 50° / 74° to 7° / 82° 32° / 80° to 316° / 78° Ambient conditions: 0°C to 5°C, transparency 5/5, seeing 4/5, humid air and clouds the first day, very clear the other days. Location: Trier, Germany Equipment: Optics: TMB 92 SS f/7 with TSFlat 2 Mount: CGE Guiding: selfguiding with ST-4000XCM Camera: SBIG ST-4000XCM Filter: IDAS LPS Acquisition: Software: Maxim DL 5 FOV, Image scale: 100.9 x 100.9 arcmin, 3.01 arcs/pixel Sub-exposures: 5h 10min (4 x 10min @-25°C + 27 x 10min @-35°C) lights, dithering 3 pixels, 100 x 10min @-25°C + 100 x 10min @-35°C dark frames, 40 x 0.1s @-35°C EL flats, 100 bias for flats calibration Processing: Images plus 3.75: Calibration, Sig Avg stacking, DDP CS3: Curves and levels, Surface blur, Shadows/Highlight, Smart sharp, Noiseware Professional Comments:
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