Whirlpool Galaxy (M51) on April 5, 2025, El Jebel, CO
Mount - AW3
Computer - ASIAIR Plus
Camera: Canon 90D
Lens - Williams Optics Red Cat 51
Focal Length - 250mm full frame, appears as 400mm on the Canon 90D
Aperture 4.9
Iso 1600
Stacked Exposures: 60
Individual Exposure: 60 seconds
Total Stacked Exposure Time: 1 hour
Stacking Software: Affinity
Post Processing:
Coldest Temperature 19C or 66F
This was my first astro shoot in Washington. I chose Andromeda
because where I was shooting in our development, I knew I could get
Polaris for polar alignment as well as Andromeda without blockage by
trees. This was as much re-learning the procedures as well as
just getting my first capture. I may redo the affinity as the center
is blown out.
Here is my stacked result:
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10/13/2025