Celestial hemisphere:  Northern  ·  Constellation: Lyra (Lyr)  ·  Contains:  IC 1296  ·  M 57  ·  NGC 6720  ·  PGC 2813669  ·  PGC 2813726  ·  PGC 2813749  ·  Ring Nebula
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M57 Ring Nebula with 26.5-Hour Ha (Lucky Imaging + Long Exposure), Johnny Qiu
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M57 Ring Nebula with 26.5-Hour Ha (Lucky Imaging + Long Exposure)

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M57 Ring Nebula with 26.5-Hour Ha (Lucky Imaging + Long Exposure), Johnny Qiu
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M57 Ring Nebula with 26.5-Hour Ha (Lucky Imaging + Long Exposure)

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Description

This work adds ~26.5-hour Ha to my previous work of Ring Nebula using lucky imaging + long exposure. It can be seen that the M57 nebula is surrounded by a spherical hydrogen shell. It is generally believed that hydrogen escapes faster, so the outermost layer of the nebula is basically hydrogen.

Rev. B is Ha-only image.

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  • Final
    M57 Ring Nebula with 26.5-Hour Ha (Lucky Imaging + Long Exposure), Johnny Qiu
    Original
    M57 Ring Nebula with 26.5-Hour Ha (Lucky Imaging + Long Exposure), Johnny Qiu
    B

B

Title: M57 Ha-only

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M57 Ring Nebula with 26.5-Hour Ha (Lucky Imaging + Long Exposure), Johnny Qiu