nébuleuse de la tête de sorcière...

[skywatcher 6 072]

le ciel d'hiver regorge d'objets plus insolites les uns que les autres,es-ce que quelqu'un a déjà photographié la nébuleuse de la tête de sorcière (IC 2118) dans l'Eridan,car visuellement je ne crois pas quelle soit accessible avec un instrument d'amateur

[Lio 0]

Rappel : IC2118 est aussi NGC1909 (c'est un des nombreux doublons des catalogues NGC et IC).

[scc 147]

Celle-ci?

(By courtesy of J. Lodriguss, www.astropix.com)

IC 2118 is an very large (1 x 3 degree) and extremely faint reflection nebula located just over the border from Orion in the winter night sky.

It is believed to be illuminated by Rigel, which is just to the east. Reflection nebulae are made of smoke-sized dust particles that do not glow on their own like emission nebulae, but rather are illuminated by the reflected light of nearby stars.

Exposure Data

* Lens: Nikon 500mm f/4 ED telephoto
* F/stop:
* Exposure: Composite of two 10 minute exposures
* Film: Unhypered Kodak Ektapress Multispeed 640 PJM
* Filter:
* Exposure start: 2:20 and 2:33 am
* Date: November 5, 1997
* Location: Belleplain, NJ, USA
* Temp:
* Dew:
* Transparency:
* Seeing:
* Autoguider error: