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Sharpless 119 - Clamshell Nebula, James E.
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Sharpless 119 - Clamshell Nebula

Sharpless 119 - Clamshell Nebula, James E.
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Sharpless 119 - Clamshell Nebula

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Description

Sharpless 119 (the Clamshell Nebula) is a large emission nebula in Cygnus. It is about 3 degrees in diameter and located in close proximity to the North America and Pelican nebulae. It is about 2200 light years away and contains dark dust lanes and several Bok globules.

This nebula is overwhelmingly strong in Ha with some nice SII but is extremely faint in OIII.

Imaged over several nights:  Sep 3-5, 19, 2023.

Comments

Revisions

  • Final
    Sharpless 119 - Clamshell Nebula, James E.
    Original
  • Sharpless 119 - Clamshell Nebula, James E.
    B
  • Sharpless 119 - Clamshell Nebula, James E.
    C
  • Sharpless 119 - Clamshell Nebula, James E.
    D

B

Description: Extracted Ha_9.5 hours_denoised

Uploaded: ...

C

Description: Extracted SII_8 hours_denoised

Uploaded: ...

D

Description: Extracted OIII_~9 hours_denoised

Uploaded: ...

Sky plot

Sky plot

Histogram

Sharpless 119 - Clamshell Nebula, James E.