Contains:  NGC 5195, Whirlpool galaxy, M 51, NGC 5194
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M51 - My First HaLRGB Image, 


            Josh Woodward
M51 - My First HaLRGB Image

M51 - My First HaLRGB Image

Technical card

Resolution: 1432x1080

Dates: June 11, 2018

ZWO Ha 1.25": 26x120" (gain: 138.00) -15C
ZWO L 1.25": 70x20" (gain: 138.00) -15C bin 1x1
ZWO RGB 1.25": 40x40" (gain: 138.00) -15C bin 1x1

Integration: 1.7 hours

Darks: ~86

Flats: ~13

Bias: ~100

Avg. Moon age: 26.90 days

Avg. Moon phase: 7.64%

Bortle Dark-Sky Scale: 5.00

Temperature: 17.00 job: 2099768

RA center: 202.473 degrees

DEC center: 47.205 degrees

Pixel scale: 1.320 arcsec/pixel

Orientation: 86.412 degrees

Field radius: 0.329 degrees

Locations: backyard, Chico, CA, United States

Data source: Unknown


I bought a shiny new camera about a month ago along with SGP. I've been trying to work out the kinks in target acquisition since then. It is a very steep learning curve. I finally was able to cobble together a data set worth processing.


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Josh Woodward
License: None (All rights reserved)

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M51 - My First HaLRGB Image, 


            Josh Woodward