Andromeda Galaxy Mosaic as of 2019-08-12

By B. Morgan | August 12, 2019

Panels A, B, C, E, F, and G in Luminance 21x90s each.
Rotated 35 degrees CCW to restore north up.

Racing against the Moon, Sun, and the meridian, on two consecutive nights I captured Panel G in luminance, red, green, and blue. The mosaic seen above consists of all six panels in luminance only.

Panel G in Luminance 21x90s, Red 21×109.4s, Green 21×67.5s, and Blue 21×90.5s.
Total integration time 2.1 hours.

Now having all data in LRGB, I created Panel G in color. The image above shows accurate star color and also variations in the arms of the galaxy as expected.

Try as I might I could not get Astro Pixel Processor (APP) to create the grand mosaic consisting of five monochrome panels and one color panel. At the very end of the process it complained it could not create a mosaic consisting of just one panel.

In a couple weeks when the Moon recedes I will capture RGB data for Panel F on the first night. Hopefully that will satisfy APP. With luck I’ll get a string of clear nights as the Fall season approaches.