Celestial hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  Andromeda Galaxy  ·  M 110  ·  M 31  ·  M 32  ·  NGC 205  ·  NGC 221  ·  NGC 224  ·  The star 32 And
M-31, Kathy Walker
M-31
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M-31

M-31, Kathy Walker
M-31
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M-31

Equipment

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Acquisition details

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Description

This is a blast from the past.  Someone asked about home-made scopes, and it brought this photo to mind, from 2011.  The scope was made from a $10 surplus photocopier lens.  It had wicked negative coma (pixel-peep at your own risk!), but it was fast (f/3.2) and had a short focal length (230mm). 

I had been imaging barely a year at that point.  My processing has improved a lot since I made the original version.  Version A is the recently-reprocessed version of the image.  Version B is the original from 2011, using the same data.

Processed with dark frames, but no flats or biases.

Comments

Revisions

  • Final
    M-31, Kathy Walker
    Original
  • M-31, Kathy Walker
    B
  • M-31, Kathy Walker
    C

B

Description: This is the original version of the data, processed in 2011, just for giggles.

Uploaded: ...

C

Description: This is the scope used to take this image. $10 for the lens, and $20 worth of plumbing bits.

Uploaded: ...

Sky plot

Sky plot

Histogram

M-31, Kathy Walker