The Silver Coin Galaxy, NGC 253 (Aleix Roig)

Celestial hemisphere: Southern · Constellation: Sculptor (Scl) · Contains: HD4389 · HD4414 · HD4555 · HD4572 · HD4631 · HD4749 · NGC 253 · Sculptor Filament · Sculptor Galaxy · Silver Coin

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The Silver Coin Galaxy, NGC 253

Link: https://astrocat.info/the-silver-coin-galaxy-ngc-253/

Link to TIFF/FITS: https://astrocat.info/the-silver-coin-galaxy-ngc-253/

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The Silver Coin Galaxy, NGC 253

Link: https://astrocat.info/the-silver-coin-galaxy-ngc-253/

Link to TIFF/FITS: https://astrocat.info/the-silver-coin-galaxy-ngc-253/

The Silver Coin galaxy, NGC253, was discovered by the astronomer and mathematician Caroline Herschel in 1783. It can be located in the southern constellation of Sculptor some 11.4 million light-years from Earth. It has a great star rate formation. It's the largest member of the Sculptor Group of Galaxies, the nearest to our Local Group of galaxies.

The dusty extended halo that surrounds this galaxy is composed of thousands of stars and it's really faint. I was able to capture this structure thanks to the dark sky of the Namibian desert. I spent one week there last September 2021 to capture some images of the southern night sky. Darkness reached an amazing 22.15 mag/arcsc2.

Image details:

L: 40x300"

RGB: (20;15;15)x300"

All images at -30ºC bin1

Calibrated with 24 flats, 24 darks, 24 bias

Total exposure: 7h30’

Average darkness: 22.15 mag/arcsec2

Image resolution: 1.15”/pixel

FOV: 1.43ºx1.15º

Equipment:

ASA N12 f/3.6 Astrograph

ASA DDM85 mount

FLI 16200 CCD camera

Astrodon LRGB filters

Aleix Roig - NAMIBIA (Tivoli Astrofarm), November 2021.

Cloudy Nights

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Status	Advanced success
Started	...
PixInsight job	N3NDSGRMTJ58E8H1EBBJIUHBOI9BJD0Z
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h47m30s.19
RA (top/left)	00h49m34s.70
RA (top/right)	00h45m28s.95
RA (bottom/right)	00h45m24s.78
RA (bottom/left)	00h49m32s.41

Dec (center)	-25°18′00″.3
Dec (top/left)	-24°49′54″.9
Dec (top/right)	-24°49′12″.6
Dec (bottom/right)	-25°46′01″.9
Dec (bottom/left)	-25°46′43″.8

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The Silver Coin Galaxy, NGC 253

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