First VLT colour photo of a strange galaxy
This is a colour photo from the VLT that shows NGC 4650A, a member of the so-called Centaurus chain of galaxies in the southern constellation of that name. NGC 4650A is a complex system that is located at a distance of about 50 Megaparsec (165 million light-years). As it is clear from this high-resolution picture, there are two main components, a lenticular-shaped galaxy (of type S0), surrounded by a knotty extended ring-like distribution of stars, dust and gas, nearly perpendicular to each other.
This is a combination of three 10-min B (blue) exposures (seeing 0.68 - 0.82 arcsec), two 10-min V (green-yellow) exposures (0.55 and 0.77 arcsec), and one 4-min and one 10-min R (red) exposures (0.55 and 0.52 arcsec) with the VLT Test Camera. Individual frames were flat-fielded and cleaned for cosmics, combined and deconvolved with the Richardson-Lucy algorithm to produce a final FWHM = 0.53 arcsec before colour combination. The field measures 1.5 x 1.5 arcmin. North is to the upper left; East is to the lower left.
Oikeudet:ESO
Kuvasta
Tunnistus: | eso9825a |
Tyyppi: | Havainto |
Julkaisupäivä: | 23. kesäkuuta 1998 |
Vastaavat julkaisut: | eso9825 |
Koko: | 2152 x 2456 px |
Kohteesta
Nimi: | NGC 4650A |
Tyyppi: | Local Universe : Galaxy : Type : Ring |
Etäisyys: | 150 miljoona valovuotta |
Constellation: | Centaurus |
Kategoria: | Galaxies |
Taustakuvat
Koordinaatit
Position (RA): | 12 44 48.95 |
Position (Dec): | -40° 42' 49.41" |
Field of view: | 1.23 x 1.41 arcminutes |
Suuntaus: | Pohjoinen on 45.8° vasen pystysuuntaan nähden |
Värit ja suotimet
Kaista | Teleskooppi |
---|---|
Optinen B | Very Large Telescope |
Optinen V | Very Large Telescope |
Optinen R | Very Large Telescope |