Celestial hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  M 4  ·  NGC 6121
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M4 (LRGB) - 29 May 2020, Geof Lewis
M4 (LRGB) - 29 May 2020
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M4 (LRGB) - 29 May 2020

Revision title: Reprocessed using PixInsight and Affinity Photo

Getting plate-solving status, please wait...
M4 (LRGB) - 29 May 2020, Geof Lewis
M4 (LRGB) - 29 May 2020
Powered byPixInsight

M4 (LRGB) - 29 May 2020

Revision title: Reprocessed using PixInsight and Affinity Photo

Equipment

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Acquisition details

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Description

Another low southerly target which is only available for a few weeks of the year from my 52N location, mostly during astro twilight. A difficult target, made more challenging by roof tops and trees along the horizon, hence the data was captured over 2 nights as the target is only available for about an hour each night and then only at an elevation between 7-10 degrees.

Comments

Revisions

  • M4 (LRGB) - 29 May 2020, Geof Lewis
    Original
  • M4 (LRGB) - 29 May 2020, Geof Lewis
    B
  • Final
    M4 (LRGB) - 29 May 2020, Geof Lewis
    D

B

Description: Corrected some elongated star shapes

Uploaded: ...

D

Title: Reprocessed using PixInsight and Affinity Photo

Description: Truly horrible data, with dreadful gradients and bloated stars, but that's the challenge with this very low elevation target from my 52N location. I've also pused the processing very hard, so see what I could get.....

Uploaded: ...

Sky plot

Sky plot

Histogram

M4 (LRGB) - 29 May 2020, Geof Lewis