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Messier 51

Image

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About this observation
Observer
Peter Tickner
Time of observation
02/03/2020 - 00:24
Object
M51 - Whirlpool Galaxy
Observing location
Urban Berkshire
Equipment
ZWO ASI071 MC Pro CMOS camera
14inch LX200 SCT at f/10 and 130mm triplet APO
EQ8 mount and EQ6 mount
OAG with Lodestar X2 Autoguider
0.75 reducer with the refractor image
Tags

This is two images of M51, the top one is a small section of an image taken through my 130mm refractor using a 0.75 Riccardi reducer at 1x1 binning and the lower image through my 14inch SCT at 2x2 binning, using the same OSC camera for both images.   The top image is a stack of 12x300seconds and the lower image is 30x300seconds.

It was an interesting comparison and shows how sensitive modern colour cameras have become.  Flats and darks subtracted from both images.

Peter

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