Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  PK128-04.1  ·  Sh2-188
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SH2-188 Ancient planetary nebula in Cassiopea. "The Dolphin." SHO and HSO RGB stars, Pat Rodgers
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SH2-188 Ancient planetary nebula in Cassiopea. "The Dolphin." SHO and HSO RGB stars

Getting plate-solving status, please wait...
SH2-188 Ancient planetary nebula in Cassiopea. "The Dolphin." SHO and HSO RGB stars, Pat Rodgers
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SH2-188 Ancient planetary nebula in Cassiopea. "The Dolphin." SHO and HSO RGB stars

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Description

A 1st light after flocking my tube. No calibration on these as I have to do some new flats. I've been using Vega to amend my collimation error. So a test of that as well. My focus was fine at the start of the session but had altered a lot by the end. At least the stars are going off in all directions instead of along a diagonal.

Two versions of this lovely planetary nebula. A SHO and a HSO im leaning towards the HSO as the preferred palette. Hopefully in the next clear spell I will add to these. It shows well in all NB filters, and the Red filter.

Added a few more subs to this and have now calibrated the image.

Rev C: The RGB

Rev D: HSO with RGB stars 9.5 hours

Comments

Revisions

  • Final
    SH2-188 Ancient planetary nebula in Cassiopea. "The Dolphin." SHO and HSO RGB stars, Pat Rodgers
    Original
  • SH2-188 Ancient planetary nebula in Cassiopea. "The Dolphin." SHO and HSO RGB stars, Pat Rodgers
    B
  • SH2-188 Ancient planetary nebula in Cassiopea. "The Dolphin." SHO and HSO RGB stars, Pat Rodgers
    C
  • SH2-188 Ancient planetary nebula in Cassiopea. "The Dolphin." SHO and HSO RGB stars, Pat Rodgers
    D

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SH2-188 Ancient planetary nebula in Cassiopea. "The Dolphin." SHO and HSO RGB stars, Pat Rodgers

In these public groups

UK Astro-Imaging