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IC 2118 The Witch Head Nebula

Shot from YFOS 1/9/10 which was a cold and sometimes windy night. It was 5°F when I left at 1:30AM. Good temp for the camera as it keeps the noise down. In this image North is down and Rigel is out of the frame to the right or East.

IC 2118 (also known as Witch Head Nebula due to its shape), is believed to be an ancient supernova remnant or gas cloud illuminated by nearby supergiant Rigel in Orion. It lies in the Eridanus 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.

Takahashi FSQ-106N @ f/5
Canon 350Da
Astronomik CLS clip in LP filter
Losmandy G11 Gemini
Autoguided with miniBorg 50 and Qguide running PHD guide

30 x 300 sec ISO 1600
calibrated with 30 darks

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IC 2118 The Witch Head Nebula