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Target

IC 63 — The Ghost of Cassiopeia

Frame / Rev
005 / B
Integration
11h 29m
IC 63 — The Ghost of Cassiopeia
HSRGB · 7nmRedCat 51 WIFDQHY Minicam8M (IMX585) · 2.39″/px
Zoom 1:1
Catalog
IC 63 · IC 63 · LBN 123.88-01.93 · LBN 622
Class
H II region
Constellation
Cassiopeia
Distance
550 ly
Coordinates
RA 00h 59m 58s · Dec +61° 01′07″
Palette
HSRGB
Sessions
3 nights · 30 Aug – 03 Sep 2025
Sky
Bortle 9

Target & processing

A diffuse, wispy cloud of gas and dust, reminiscent of the ghostly outline of Cassiopeia's 'W' shape in the night sky. This emission nebula is one of the many born from the collapse of a massive star in the constellation Cassiopeia. IC 63 is situated near the northern edge of the constellation Cassiopeia's 'W' shape, where the faint outline of this H II region meets the starry sky.

A new acquisition and processing, although I'm still not satisfied.

Also, the very bright star make it relatively challenging to process.

Note to self

A bit more acquisition time that the first attempt, but still not enough to my taste. Given the new tools in PixInsight to deal with light pollution (e.g. Multiscale Gradient Correction), I'm less reluctant to do broadband imaging from a Bortle 9 sky. I will come back to this one someday, until I'm 100% satisfied with it.

Per-filter integration

39.9% · 4h 35mSII 42.1% · 4h 50mR 6% · 0h 41mG 6.2% · 0h 43mB 5.8% · 0h 40m
SII 7nm
4h 50m
Hα 7nm
4h 35m
R
0h 41m
G
0h 43m
B
0h 40m
KeptRejected at integration
Equipment
Optics
William Optics RedCat 51 · 250mm f/4.9
Camera
QHY MiniCam8M · IMX585 · 2.9µm / px
Filters
XiMei 7nm Hα / OIII / SII + XiMei Broadband R / G / B
Mount
ZWO AM3 harmonic, no counterweight
Guiding
Uniguide 32mm + ZWO ASI120MM Mini
Control
Mele Quieter 4C · NINA + PHD2
Site
Montréal, QC · Bortle 9 · 45.5° N
Adjacent frames
V1769 Cyg
V1769 Cyg
Jul 2026 · 24h 55m
NGC 6888
NGC 6888
Jul 2026 · 19h 05m
IC 1848
IC 1848
Feb 2026 · 32h 24m
IC 1805
IC 1805
Sep 2025 · 40h 25m