M31 HaLRGB (NASA APOD 10-24-22)

M31 The Great Andromeda Galaxy in a sea of Ha.

 

My "deepest" astro-photo to date. I had only seen a few images of M31 this deep with the faint interstellar clouds of Ha present. I wanted enough integration to not only show the Ha clouds, I wanted to see their structure. All the data for this M31 image was acquired by myself, with my own equipment from a Bortle-1 location during two different years at the Okie-Tex Star Party.

 

About 39hrs data total?

(I had 178 Ha subs but only used 166 of them)

 

Ha clouds data:

166, 10-minute, 100 gain, Ha sub exposures, Rokinon 135mm lens at F2.8

ASI2600mm pro

 

Star Field and LRGB data:

69, 1-minute, 100 gain Lum

69, 1-minute, 100 gain Red

69, 1-minute, 100 gain Green

69, 1-minute, 100 gain Blue

Rokinon 135mm at F2.8

ASI2600mm pro

 

Galaxy details:

80, 6-minute, 800-ISO, F5.5 at 550mm Esprit 100ED, Nikon D810a

 

Sky-Watcher EQ6-R pro mount

Dithered and guided, data calibrated with darks, flats, bias, and flat darks.

 

Pixinsight

Photoshop

 

Okie-Tex Star Party 2021 and 2022 data

apod.nasa.gov/apod/ap221024.html

 

 

Done