NGC 247

Irregular Galaxy in Cetus

 (ra: 0:47.1 / dec - 20.46)

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November 2010 Mercedes Observatory Buenos Aires, Argentina

DATA

TYPE: Irregular Galaxy

APPARENT MAGNITUDE: 8.9

SIZE: 21.4 x 6.9 arc minutes

DISTANCE: 8.3 Million light years

OBJECT DESCRIPTION AND IMAGE SESSION

NGC 247 is a member of the Sculptor Group and is the only one who belong to other Constellation (Cetus) It has a rather smaller apparent size compared with its neighbour NGC 253 and its is located 4 and a half degrees north. It has a low surface brightness and it is presented as a hedge on galaxy. It can be found 2.8 degrees SSE of Beta Ceti (Magnitude 2.03). Due its low surface brightness is visible from dark skies and telescopes with moderate aperture.

The Moon phase was 33%. Too much for imaging this galaxy. It was a windy session and I had to perform the flip after the Luminance Channel

IMAGE INFORMATION

SCOPE: 8" SCT with TS 0.8x reducer

MOUNT: NEQ6

SKY CONDITIONS: Moon at 33% Seeing regular

CAMERA: QSI 583 WS -15Cº

FILTERS: Astronomik Type 2,

EXPOSURES: LRGB (80,20,20,20)  LRGB bin 2x2

GUIDING: WO Zenithstar 66. Starlight Xpress Lodestar Camera. AA 3.71 Control Camera Plug-in

PROCESSING: No darks, nor flats, nor offsets. Images Plus (Sigma Median Combination), Color composition and star reduction. CCD Sharp Richardson Lucy Deconvolution Photoshop CS