Spiral galaxy NGC 253

This photo shows a sky field around the Spiral Galaxy NGC 253 (Type Sc) seen nearly edge-on. It is located in the southern constellation Sculptor at a distance of about 8 million light-years. The image is the sum of five 5-min exposures through a blue (B-band) optical filtre. They were slightly offset with respect to each other so that the small gaps between the eight CCD''''s of the mosaic are no longer visible. This image also shows the faint trails of 2 artificial satellites. Many of the quite numerous and small, slightly fuzzy objects are undoubtedly globular clusters of NGC 253. The image processing consisted of de-biassing, flat-fielding, and removal (by interpolation) of some bad columns. The full-width-half-maximum (FWHM) of stellar images is about 1.0 arcsec. It was rebinned (2x2) to 4kx4k size and sampling 0.48 arcsec/pixel.North is up and East is left.

Crediti:

ESO

A proposito dell'immagine

Identificazione:eso9903a
Tipo:Osservazione
Data di pubblicazione:15 Gennaio 1999
Notizie relative:eso9903
Dimensione:4000 x 3917 px

A proposito delll'oggetto

Nome:NGC 253
Tipo:Local Universe : Galaxy : Type : Spiral
Distanza:11 Milione Anni luce
Constellation:Sculptor
Categoria:Galaxies

Formati delle immagini

JPEG grande
1,8 MB

Zoom


Sfondi

1024x768
90,9 KB
1280x1024
140,7 KB
1600x1200
204,2 KB
1920x1200
260,0 KB
2048x1536
333,3 KB

Coordinate

Position (RA):0 47 42.16
Position (Dec):-25° 15' 32.86"
Field of view:31.95 x 31.28 arcminutes
Orientazione:Il Nord è a 1.6° a destra della verticale

Colori e filtri

BandaTelescopio
Ottico
B
MPG/ESO 2.2-metre telescope
WFI