Abell 21 - Medusa Nebula

Abell 21 - Medusa Nebula

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The Medusa Nebula is the ancient remnant of a massive star that cast off a great part of its material and has so far expanded four light years across. A super dense white dwarf star is what remains of the original star and glows blue in the center of the planetary nebula. This image is still a work in progress. Both my ST10XME camera and telescope mount were incapacitated by a freak short circuit in my light box while taking flats. I hope to repair the damage as soon as possible and finish this image while clear sky season is still with us.



Date Imaged       :

February 12, 2010

Lens       :

N16 at f/4.5

Camera       :

ST10XME

Exposure       :

7.3 hours

Filter       :

L 140 minutes, RGB 100 minutes

Mount       :

Losmandy Titan

Location       :

Stardust Observatory, Baguio, Philippines