NGC891Type Galaxy Date 2009-12-11 21:33:00 Constellation Andromede Distance 32Mly Magnitude 11.5 Picture diagonal width 28 ' Site Gieres, 38, France (MPC:B83) Instrument Newton Diameter 200 mm Resulting focale 1000 mm Mount Atlas EQ G Exposures 1x5mn Total exposure 5mn Autoguide Yes Sensor Temp. -20 °C Camera SBIG ST7-XME Sensor CCD Sensor size 4.6x6.9 mm2 Sensor pixels 765x510 Binning no Resize 1.00 Resulting sampling 1.85 "/pix Filters no Record Type FIT Processing Iris(-dark,grad) Sky transparency mag<4 Remarks -