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SH2-185 — The Ghost of Cassiopeia (LRGB) · SH2-185 / IC 63

Two colours of starlight — γ Cassiopeiae's blue reflection in the dust, rimmed with red Hα where its ultraviolet light boils the gas away. LRGB, 4.8 h with the 200PDS.

The Ghost of Cassiopeia (SH2-185 / IC 63) in LRGB — a blue reflection nebula with Hα rims, Sky-Watcher 200PDS and ToupTek ATR533M, Mecklenburg-Vorpommern.
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TargetSH2-185 / IC 63
RA00h 59m 29s
Dec+60° 54′ 39″
Captured2026-10-12
Integration~4 h 48 m (17,280 s)
FramesL 32×90s · R 50×120s · G 58×120s · B 12×120s
FiltersL · R · G · B
Gain100
Sensor−10 °C
SiteMecklenburg-Vorpommern, Germany
BortleBortle 4

Processing notes

LRGB combined and registered in Siril (1× drizzle), SPCC colour-calibrated and star-reduced, then background-neutralised to remove the γ Cas glare gradient.

Related

Starless view of the SH2-185 nebula isolating the Ghost of Cassiopeia dust and gas.
SH2-185 — starless SH2-185 / IC 63
SH2-185 field star chart with Gaia DR3 stars to G=15 marked and Tycho-2/HIP stars labelled.
SH2-185 — field star chart SH2-185 / IC 63
Annotated SH2-185 showing IC 63, γ Cassiopeiae, a 5-arcmin scale bar and north arrow.
SH2-185 — the Ghost, annotated SH2-185 / IC 63

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