"THIS IS A REPROCESSED VERSION OF M51 TAKEN LAST YEAR"
This rework of last years image has "No" new data added. There are 3 reasons why I have revisited this:-
1. I've always had problems with this object (M51) and last time was no exception, I was never happy with it, it looked to much like an impressionist painting.
2. The sky's have been so poor that I haven't managed to obtain any new data and not liked to this side of Easter and was getting bored.
3. To see if my processing has improved.
I'm happier with this version which has enabled me to crop the image a bit more than the previous image post here last year.
The Whirlpool Galaxy, also known as M51a and M51b is a interacting spiral galaxy with a active galactic nucleus. It lies in the constellation Canes Venatici with a estimated distance from us of 23 million light-years. Its diameter is believed to be about 60,000 ly with a visual magnitude of 8.4.
Telescope Meade 6000 115mm and AZ-EQ6 GT
ZWO ASI1600mm-Cool cmos camera
Orion Mini Auto Guide
ZWO L,R,G,B Filter
Chip Temp Cooled to -20 degC
M51 Whirlpool Galaxy (Canes Venatici)
Gain 139 (Unit Gain) For Luminance
Gain 200 For RGB
28 Lum subs@180sec (1h 24min)
16 Red subs@120sec (32min)
16 Green subs@120sec (32min)
16 Blue subs@120sec (32min)
Total imaging Time 3h
APT "Astro Photograph Tools"
#astronomy #astrophotography #asi1600 #asi1600mm #deepskyobjects #galaxy #astro #univers #universetoday #zwoasi1600 #lindfield #M51 #canesvenatici #stargazinglive #whirlpoolgalaxy #zwo #bbcstargazing #bbcstargazinglive #m51a #m51b #skyatnightmagazine