Celestial hemisphere:  Northern  ·  Constellation: Gemini (Gem)  ·  Contains:  PK205+14.1  ·  Sh2-274
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Abell 21 Pn in Gemini. "The Medusa Nebula.", Pat Rodgers
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Abell 21 Pn in Gemini. "The Medusa Nebula."

Getting plate-solving status, please wait...
Abell 21 Pn in Gemini. "The Medusa Nebula.", Pat Rodgers
Powered byPixInsight

Abell 21 Pn in Gemini. "The Medusa Nebula."

Equipment

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Acquisition details

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Description

Took 170 minutes on this on 5th Nov 16. Almost to the year I managed another 2 hours last night before dawn. My SGPro sequence hadn't saved and was showing the Eskimo instead of Abell 21 ?

So having made a new sequence for last night the orientation and image centre is different from last years which resulted in a large crop. Still just shy of 5 hours now on this beautiful Pn. Hopefully a few more clear nights so I can keep adding to these. It shows well in all 3 NB filters but I only managed 2 subs in SII before the skies brightened.

Rev A: A HOO image with an extracted Lum added.

Rev B: The Ha stack with a STF stretch.

Rev C: The OIII stack with a STF stretch.

Rev D: A H HO O image with an extracted Lum added.

Comments

Revisions

  • Final
    Abell 21 Pn in Gemini. "The Medusa Nebula.", Pat Rodgers
    Original
  • Abell 21 Pn in Gemini. "The Medusa Nebula.", Pat Rodgers
    B
  • Abell 21 Pn in Gemini. "The Medusa Nebula.", Pat Rodgers
    C
  • Abell 21 Pn in Gemini. "The Medusa Nebula.", Pat Rodgers
    D

Sky plot

Sky plot

Histogram

Abell 21 Pn in Gemini. "The Medusa Nebula.", Pat Rodgers

In these public groups

UK Astro-Imaging