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Contains:  NGC 5198, NGC 5195, Whirlpool galaxy, M 51, NGC 5194, IC 4263, NGC 5173, NGC 5169
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M51 - Whirlpool Galaxy in LRGBHA, 


            Simon Todd
M51 - Whirlpool Galaxy in LRGBHA

Technical card

Resolution: 3289x2425

Dates:March 21, 2017March 26, 2017April 3, 2017April 26, 2017

Baader Blue 36mm: 32x300" -20C bin 1x1
Baader Green 36mm: 32x300" -20C bin 1x1
Baader Luminance 36mm: 38x300" -20C bin 1x1
Baader Red 36mm: 32x300" -20C bin 1x1

Integration: 11.2 hours

Darks: ~25

Flats: ~25

Bias: ~25

Avg. Moon age: 21.82 days

Avg. Moon phase: 23.07% job: 1596265

RA center: 202.442 degrees

DEC center: 47.209 degrees

Pixel scale: 1.390 arcsec/pixel

Orientation: 90.092 degrees

Field radius: 0.789 degrees

Data source: Backyard


This is probably going to be my last image from the 2016/2017 astronomy season although I might obtain some HA data to go into this image

M51 - Whirlpool Galaxy in Ursa Major

The Image consists of
32x300S in LRGB and data has been obtained over the last month in about 5 different sessions
Also contains 12x600S of 7nm HA Data in the Red Channel as a Lighten Layer

25 Darks / Flats and BIAS Frames have also been applied

Equipment Details:
Imaging Scope: Sky-Watcher Quattro 8-CF F4 Imaging Newtonian
Imaging Camera: Atik Cameras 383L+ Mono CCD Cooled to -20C
Coma Corrector: Sky-Watcher Aplanatic Coma Corrector
Guide Scope: Celestron Telescopes C80ED Refractor
Guide Camera: Qhyccd QHY5L-II
Mount: Sky-Watcher EQ8 Pro
Filter Wheel: Starlight Xpress Ltd 7x36mm EFW
Filters: Baader Planetarium 36mm Unmounted LRGB
Image Acquisition: Main Sequence Software SGPro
Image Combining: Maxim-DL
Image Processing: PixInsight



Simon Todd
License: None (All rights reserved)

Sky plot

Sky plot


M51 - Whirlpool Galaxy in LRGBHA, 


            Simon Todd