Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent Nebula  ·  HD192020  ·  HD192163  ·  HD192182  ·  HD192303  ·  HD228243  ·  HD228304  ·  LBN 203  ·  NGC 6888  ·  Sh2-105
Getting plate-solving status, please wait...
NGC 6888 - Crescent Nebula, Paul Ricker
Powered byPixInsight

NGC 6888 - Crescent Nebula

Getting plate-solving status, please wait...
NGC 6888 - Crescent Nebula, Paul Ricker
Powered byPixInsight

NGC 6888 - Crescent Nebula

Equipment

Loading...

Acquisition details

Loading...

Description

NGC 6888, the Crescent Nebula, is a large bubble blown by the Wolf-Rayet star WR 136. This massive post-main sequence star is blowing away matter from its outer layers at a prodigious rate (perhaps 10^-4 solar masses per year) and will probably die as a supernova in a few hundred thousand years.

It's much better than my previous attempts at this object, but the extended region of OIII emission seems to be a challenge. Using a new camera with a larger chip on the AT8RC. Despite (as far as I can tell) good collimation, I'm seeing distorted stars in the corners that I have to crop. Will see soon whether a field flattener helps.

Comments

Revisions

  • NGC 6888 - Crescent Nebula, Paul Ricker
    Original
  • Final
    NGC 6888 - Crescent Nebula, Paul Ricker
    B

B

Description: Blended original with a 4x4 binned version with more star reduction.

Uploaded: ...

Sky plot

Sky plot

Histogram

NGC 6888 - Crescent Nebula, Paul Ricker