Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  Iris Nebula  ·  NGC 7023  ·  T Cep  ·  VdB139
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NGC 7023, the Iris Nebula, Mark L Mitchell
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NGC 7023, the Iris Nebula

Getting plate-solving status, please wait...
NGC 7023, the Iris Nebula, Mark L Mitchell
Powered byPixInsight

NGC 7023, the Iris Nebula

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Description

The image is from 11 hours of LRGB data. The red star near the bottom margin is T Cephei, a Mira-type variable star. It varies from magnitude 5.2 to 11.3 over about 13 months, and since the central star in the Iris Nebula is mag 6.8, T Cephei must be near its brightest now.

[This version has star reduction using Morphological Transform and a central mask.]

Comments

Revisions

  • Final
    NGC 7023, the Iris Nebula, Mark L Mitchell
    Original
  • NGC 7023, the Iris Nebula, Mark L Mitchell
    G
  • NGC 7023, the Iris Nebula, Mark L Mitchell
    H

G

Description: The original original version.

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H

Description: EZ star reduction. Central mask.

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NGC 7023, the Iris Nebula, Mark L Mitchell

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