M51 (CVn)

M51 (CVn)

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Date/Site:	April 19. and 20., 2015, AAR-observatory in Presberg
Exposure/ Filter:	Red: 9 x 5 minutes, green: 9 x 5 minutes, blue: 12 x 5 minutes, lum: 24 x 5 minutes (-20°C)
Camera:	QSI 632 with SBIG and Baader-filters off-axis-guiding with Lodestar
Optics/ Instrument:	40cm f5 Newton on AP1200
	Focusing with MicroTouch and FocusMax, automatic image acquisition with CCD-Commander and MaximDL 6, calibration: MaximDL 6, processing in PixInsight 1.8

Messier 51, possibly the most popular galaxy for all amateur astro-photographers, captured with a not well collimated "White Elephant".
So it has to be imaged in the next season again.