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Contains:  NGC 5195, Whirlpool galaxy, M 51, NGC 5194
Getting plate-solving status, please wait...


            Paddy Gilliland


Technical card

Imaging telescope or lens:RCOS 14.5"

Imaging camera:SBIG STX KAF-16803


Guiding telescope or lens:RCOS 14.5"

Software:Pixinsight 1.8

Filters:Ha 5nmAstrodon LuminanceAstrodon BlueAstrodon RedAstrodon Green

Resolution: 3096x3180

Dates:May 16, 2017June 15, 2017June 16, 2017June 18, 2017June 24, 2017

Astrodon Blue: 11x1200" bin 1x1
Astrodon Green: 10x1200" bin 1x1
Astrodon Luminance: 30x1200" bin 1x1
Astrodon Red: 12x1200" bin 1x1
Ha 5nm: 17x1800" bin 1x1

Integration: 29.5 hours

Avg. Moon age: 16.97 days

Avg. Moon phase: 48.69% job: 1651766

RA center: 13h 29' 57"

DEC center: +47° 11' 52"

Pixel scale: 0.550 arcsec/pixel

Orientation: -161.449 degrees

Field radius: 0.339

Locations: Deep Sky West Remote Observatory (DSW), Rowe, New Mexico, United States


Here is my look at M51.
The Whirlpool Galaxy, also known as Messier 51a, M51a, or NGC 5194, is an interacting grand-design spiral galaxy with a Seyfert 2 active galactic nucleus in the constellation Canes Venatici. In the Catalogue of Named Galaxies, it is called Typhon Canum Venaticorum, after the Greek god Typhon. It was the first galaxy to be classified as a spiral galaxy. Recently it was estimated to be 23 ± 4 million light-years from the Milky Way, but different methods yield distances between 15 and 35 million light-years. Messier 51 is one of the best-known galaxies in the sky. The galaxy and its companion, NGC 5195, are easily observed by amateur astronomers, and the two galaxies may even be seen with binoculars. The Whirlpool Galaxy is also a popular target for professional astronomers, who study it to further understand galaxy structure (particularly structure associated with the spiral arms) and galaxy interactions.
I was interested to see how much detail could be found in the data. [Wikipedia]

I recently saw an article on AFP-R to maximise detail, however, it is very similar to what I already do running small iterations of LHE at different settings in PI and stacked high pass layers selectively applied in PS. Great to see some new techniques worth a look if you have not seen. I will stick with my approach for now.



Paddy Gilliland
License: None (All rights reserved)

Sky plot

Sky plot




            Paddy Gilliland

In these public groups

Members of Deep Sky West