Sh2-290: planetary nebula in constellation Cancer

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Sh2-290 is an ancient planetary nebula. A planetary nebula is created when a low-mass star blows off its outer layers at the end of its life. Sh2-290 is one of the largest known planetary nebulae, with a diameter of about 7 parsecs. The bluish interior is from energized oxygen atoms. The bright side of the nebula is due to its interaction with ambient interstellar gas.

Imaging telescopes or lenses: TecnoSky Apo 70/420
Imaging cameras: Atik 314L+ Mono
Mounts: Skywatcher HEQ5 Pro
Guiding telescopes or lenses: TecnoSky Telescopio Guida 50/168
Guiding cameras: QHY5-II QHY-5 color
Focal reducers: GSO 0.75X
Software: Maxim DL 5 MaxIm DL Pro 5, Adobe Photoshop CS5 Photoshop CS5
Filters: Baader H-alpha 7nm
Dates: Jan. 26, 2014, Jan. 28, 2014
Baader H-alpha 7nm : 4×1800″ -10C bin 1×1
Baader OIII 1.25″ Filter: 4×1800″ -10C bin 1×1

Autor: Domenico De Luca

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02 February 2014

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