Hemisphere:  Southern  ·  Constellation: Eridanus (Eri)  ·  Contains:  IC2118  ·  NGC 1909  ·  Witch Head nebula  ·  the Witch Head Nebula
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IC2118 - Witch Head Nebula - OSC, 


            Álmos Balási
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IC2118 - Witch Head Nebula - OSC

Imaging telescopes or lenses: SkyWatcher Equinox 120ED

Imaging cameras: ZWO ASI071 MC Pro

Mounts: SkyWatcher EQ6-R Pro

Guiding cameras: ZWO ASI 290MM mini

Focal reducers: Skywatcher 0.85x Focal Reducer 120 ED

Software: Pleiades Astrophoto PinInsight 1.8.8-5  ·  Adobe Creative Cloud

Filters: IDAS UV/IR CUT 2"

Accessory: ZWO ASiair

Dates:Feb. 13, 2021Feb. 18, 2021

Frames:IDAS UV/IR CUT 2": 18x600"

Integration: 3.0 hours

Avg. Moon age: 3.96 days

Avg. Moon phase: 20.59%

Astrometry.net job: 4232094

RA center: 5h 5' 0"

DEC center: -7° 14' 22"

Pixel scale: 1.251 arcsec/pixel

Orientation: -166.023 degrees

Field radius: 0.965 degrees

Resolution: 2933x4714

Locations: Home observatory, Szob, Pest, Hungary

Data source: Backyard


IC 2118 (also known as Witch Head Nebula due to its shape) is an extremely faint reflection nebula believed to be an ancient supernova remnant or gas cloud illuminated by nearby supergiant star Rigel in the constellation of Orion. It lies in the Orion constellation, about 900 light-years from Earth. The nature of the dust particles, reflecting blue light better than red, is a factor in giving the Witch Head its blue color. Radio observations show substantial carbon monoxide emission throughout parts of IC 2118, an indicator of the presence of molecular clouds and star formation in the nebula. In fact candidates for pre-main sequence stars and some classic T-Tauri stars have been found deep within the nebula.


Sky plot

Sky plot


IC2118 - Witch Head Nebula - OSC, 


            Álmos Balási

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