Witch Head Nebula

30мар

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 Orion. It lies in the Eridanusconstellation, 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.

Imaging telescopes or lenses: William Optics Star 71
Imaging cameras: QHYCCD QHY8
Mounts: Orion Atlas EQ-G + EQDIR
Guiding cameras: QHYCCD Q5L-II-M
Software: PixInsight 1.8,  Photoshop CC, AstroTortilla Plate Solver,  Cartes du Ciel Planitarium,  Nebulosity 3.1 Nebulosity und PHD
Accessories: Orion Thin OAG
Resolution: 1972×3037
Dates: Feb. 14, 2015,  Feb. 25, 2015
Frames: 30×600″
Integration: 5.0 hours
Avg. Moon age: 15.32 days
Avg. Moon phase: 36.70%
RA center: 76.123 degrees
DEC center: -7.171 degrees
Orientation: 3.755 degrees
Field radius: 2.314 degrees
Author: Josh Smith
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