Andromeda Galaxy Panel 4

Subs (10hrs 33m)

L 264 frames 60s 4hrs 24m

R 124 frames 60s 2hrs 04m

G 117 frames 60s 1hrs 57m

B 128 frames 30s 2hrs 08m

Pixinsight

Blur Ext correct only 

Mosaic by coordinates on all panels by filter

DNA Linear Fit on each panel by filter

Photometric Mosaic by panel

LRGB Combination on RGB

Image solver

Seti Astro find background 

SPCC

Blur Ext

Graxpert

Star Ext on LRG image and Lum

GHS Stretch Images

LRGB combination to add Lum

Curves RGBK

Colour saturation for blue and magenta

Colour mask for Blue

Curves for Blue

Stars

SetiAstro Star Stretch

Add stars back

Lightroom

Blackpoint

Small texture and clarity adjustment

Info

The Andromeda Galaxy, also known as Messier 31 (M31), is a giant barred spiral galaxy and the closest major galaxy to our Milky Way.

Located about 2.5 million light-years away, it is the most distant object in the night sky that can be seen with the naked eye under good, dark-sky conditions. It appears as a faint, blurry patch of light.

Andromeda is much larger than the Milky Way, spanning about 220,000 light-years in diameter compared to the Milky Way's 100,000 light-years.

Andromeda has several smaller satellite galaxies orbiting it, such as M32 and M110, M110 being seen at the top of this image and M32 within the arms under the core of the galaxy.

The Andromeda Galaxy is moving toward the Milky Way at a speed of about 110 kilometers per second (68 miles per second). Due to this gravitational pull, the two galaxies are on a collision course, and they are expected to collide and merge in roughly 4.5 billion years.