Celestial hemisphere:  Southern  ·  Constellation: Eridanus (Eri)  ·  Contains:  Extremely wide field
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Witch Head Nebula - lightness , georgian82
Witch Head Nebula - lightness
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Witch Head Nebula - lightness

Getting plate-solving status, please wait...
Witch Head Nebula - lightness , georgian82
Witch Head Nebula - lightness
Powered byPixInsight

Witch Head Nebula - lightness

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Description

This proved to be a very challenging target due to the position in the sky at this time of year. It is positioned in a heavy light polluted area and I lost a lot of contrast and also got very strange gradients that I was not able to resolved in the color picture (due to shooting at f/2.8), so I decided to extract the lightness out of it and work with that.

I imaged at f/2.8 and I applied superbias and darkframe subtraction and no flat frames. There is minor amount of noise reduction.

Comments

Revisions

  • Witch Head Nebula - lightness , georgian82
    Original
  • Witch Head Nebula - lightness , georgian82
    B
  • Final
    Witch Head Nebula - lightness , georgian82
    C

Sky plot

Sky plot

Histogram

Witch Head Nebula - lightness , georgian82