Celestial hemisphere:  Northern  ·  Constellation: Monoceros (Mon)  ·  Contains:  HD288968  ·  HD288977  ·  HD288978  ·  HD288980  ·  HD288981  ·  HD288983  ·  HD289029  ·  HD289030  ·  HD289031  ·  HD289032  ·  HD289033  ·  HD289034  ·  HD289035  ·  HD289036  ·  HD289037  ·  HD289038  ·  HD289039  ·  HD289040  ·  HD289042  ·  HD289043  ·  HD289044  ·  HD289045  ·  HD289046  ·  HD289047  ·  HD289048  ·  HD289050  ·  HD289051  ·  HD289052  ·  HD289054  ·  HD289055  ·  And 186 more.
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Sharpless 284, James E.
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Sharpless 284

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Sharpless 284, James E.
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Sharpless 284

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Description

Sharpless 284 (LBN 983 and others) is a large emission nebula located approximately 19500 light-years away in Monoceros. The stars at the center make up the open cluster Dolidze 25.

It is much brighter in Ha, but OIII and SII show some details.  See revisions for stacked and slightly stretched images.

Imaged over several nights:  Dec 29, 2022; Jan 9, 11, 17 and 25, 2023.

Comments

Revisions

  • Final
    Sharpless 284, James E.
    Original
    Sharpless 284, James E.
    G
    Sharpless 284, James E.
    H
    Sharpless 284, James E.
    I

G

Description: Ha_14.5 hours_denoised

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H

Description: OIII_5.5 hours_denoised

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I

Description: SII_6 hours_denoised

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Sky plot

Sky plot

Histogram

Sharpless 284, James E.