Witch Head Nebula (IC 2118) is a faint reflection nebula in the
Eridanus constellation at about 900 light years. Still to be
determined, its believed to be an ancient supernova remnant or
gas cloud illuminated by nearby supergiant star Rigel in Orion.
Blue color is determined by the nature of the dust particles
contained in the nebula by reflecting better blue than red.
Radio observations confirmed substantial carbon monoxide
emission throughout parts of the nebula, an indicator of the
presence of molecular clouds where stars are forming.
Sorgin Buru nebulosa (IC
2118) Eridano konstelazioan 900 argi-urtera dagoen distira
ahuleko islada-nebulosa da. Oraindik argitzeke dagoen arren
gertu dagoen Orion konstelazioko Rigel izar erraldoiak
argiztatzen duen, aintzinako supernoba baten hondarrak edo izar
hodeia dela uste da. Kolore urdina nebulosaren partikulen
izaerak ematen dio, kolore urdina gorria baino hobeto islatuz.
Irrati uhin bidezko behaketek karbono-monoxidozko emisio
nabarmena baieztatu dute nebulosaren gune zehatzetan, non
izarrak sortzen ari diren hodei molekularren presentziaren
adierazle.
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Objektua: Sorgin
Buru Nebulosa Eridano konstelazioan.
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Esposizio-denbora: 23 x 300s (L) + 14 x 300s (R) + 12 x 300s (G) +
12 x 300s (B).
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Processing:
PixInsight Core 1.8.
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Teleskopioa: Takahashi FSQ-106EDX
eta EM-200Temma2M. Seletek Armadillo / Focusmax.
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Kamera: Apogee U16M / AFW-50-7S
( - 20ºC ).
Astrodon E-Series genII iragazkiak.
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Jarraipena:
FS-60CSV, QHY-5, PHDguiding.
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Data: 2016ko abenduak 29.
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● Object: Witch Head
in the Eridanus constellation.
● Exposure: 23
x 300s (L) + 14 x 300s (R) + 12 x 300s (G) + 12 x 300s (B).
● Processing: PixInsight Core 1.8.
● Telescope:
Takahashi FSQ-106EDX on EM-200Temma2M. Seletek Armadillo / Focusmax.
● Camera:
Apogee U16M / AFW-50-7S ( - 20ºC ). Astrodon E-Series genII filters.
● Guiding:
FS-60CSV, QHY-5, PHDguiding.
● Date: 29th of December 2016.
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