Celestial hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  Andromeda Galaxy  ·  M 110  ·  M 31  ·  M 32  ·  NGC 205  ·  NGC 221  ·  NGC 224
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Andromeda Galaxy, Walter Torres
Andromeda Galaxy
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Andromeda Galaxy

Revision title: +12.25hrs of Ha

Getting plate-solving status, please wait...
Andromeda Galaxy, Walter Torres
Andromeda Galaxy
Powered byPixInsight

Andromeda Galaxy

Revision title: +12.25hrs of Ha

Equipment

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Acquisition details

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Description

Not much needs to be said about M31, it's a crowd favorite of both amateurs and experts.  Almost a year to the day since my first serious attempt at imaging this beautiful target I went out to a dark site to try again and do it justice.  My goal was to shoot it for two nights but the weather turned south (figuratively speaking sadly) and was only able to get one night down. I may still go back out to capture one more night of LRGB data in the next couple of months.  The Ha was captured from my backyard a few days before.

PixInsight workflow:
Cropped all channels roughly 4% on each side
Stretched RGB channels with EZ Soft Stretch Script
     Combined RGB with LRGB Combination
     Extracted L from RGB image
     Reapplied L to RGB image with 0.350 Saturation X 3 times for color
     Background Neutralization
Processed L Manually
     Stretched with Histogram Transformation and Curves Transformation
     Dark Structure Enhance Script
     EZ Star Reduction Script
     Applied L to RGB image with Chrominance Noise Reduction
Stretched Ha Manually
    Removed stars with StarNet2
    Applied as mask to LRGB image
    Added Ha data to LRGB with PixelMath

Photoshop workflow:
Camera Raw Filter adjustments
Resampled for export

Edit 9/2/2022: Over the last week I was able to capture additional LRGB and have added a little over 8.5hrs.  On the processing side, I did not apply NoiseXTerminator to this iteration as I found that it was treating the tiny individual stars in Andromeda as noise and smoothening all of them out.

Edit 9/11/2022: Over the last week I captured an additional 12hrs of Ha.  This was from home in the city and during a full moon so it wasn't the best quality but did make a slight difference.  Also reprocessed the Lum channel.

Comments

Revisions

  • Andromeda Galaxy, Walter Torres
    Original
  • Andromeda Galaxy, Walter Torres
    E
  • Final
    Andromeda Galaxy, Walter Torres
    H

E

Title: +8.5hrs of LRGB

Uploaded: ...

H

Title: +12.25hrs of Ha

Description: Reprocessed Lum and added 12hrs of Ha

Uploaded: ...

Sky plot

Sky plot

Histogram

Andromeda Galaxy, Walter Torres

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