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NGC 2818 & NGC 2818 A
Planetary Nebula and Open Cluster in Pyxis (The Compass)
(ra: 09:16.0 / dec -36:37)
February 2011, Home Backyard in Martinez
Buenos Aires, Argentina
DATA
TYPE: Planetary Nebula
VISUAL MAGNITUDE: n/a
SIZE: 1.6 arc minutes for NGC 2818 and 10 arc minutes for NGC 2818A
DISTANCE: 10.400 light years
OBJECT DESCRIPTION AND IMAGE SESSION
NGC 2818 was formed as an ancient star ran low on fuel and began to cast off its outer layers. The remnant of its core will remain as a white dwarf. The nebula seems to sit within NGC 2818A a group of stars of suns loosely bound by gravity. However different radial velocity among both objects indicates that NGC 2818 is positioned in perspective with the open cluster 2818A. The open cluster is composed by stars from magnitude 11th to 14th, so it is relative faint.
The image was severely cropped and magnified in order to see the open cluster and its companion in more detail.
IMAGE INFORMATION
SCOPE: Celestron SCT 8" working around 6.3
MOUNT: Sky Watcher HEQ6
SKY CONDITIONS: Regular. Transparency bad.
CAMERAS: QSI 583 WS -15Cº
FILTERS: Astronomik Type 2, Ha 6nm
EXPOSURES: LRGB (20,20,20,20)
GUIDING: William Optics ZenithStar 66 f6. Starlight Xpress Lodestar Camera. AA 3.71 Control Camera Plug-in
PROCESSING: No darks, nor flats, nor offsets. Images Plus (Sigma Median Combination) CCD Sharp Richardson Lucy Deconvolution NASA Photoshop Fits Liberator, Photoshop CS