R Coronae Australis Complex
This is a colour photo of the R Coronae Australis region in the southern Milky Way, obtained with the Wide Field Imager (WFI) (camera) at the 2.2-m MPG/ESO Telescope on La Silla (Chile). It is based on a series of CCD exposures through optical B-, V- and R-filters, here rendered as blue, green and red, respectively. The sky field shown measures approx. 33.7 x 31.9 arcmin (about the diameter of the full moon).
Tecnical information : The observations were obtained on the night of 30 August 2000. The image is a combination of twelve large (8000 x 8000 pix) CCD frames taken through B, V, and R filters. Four exposures of 5 min each were obtained in each filter, with the telescope pointing at slightly different positions so that the gaps among the eight individual CCD-chips of the detector can be adequately filled. All frames were carefully aligned, and the intensity levels were cut in order to achieve the proper colour balance. A logarithmic intensity scale was used to improve the dynamical range. This image displays the full field and was rebinned to a smaller scale in order to allow transportation over the web. The images were prepared by Fernando Comeron (ESO).
Kilde:ESO
Om billedet
Id: | eso0031a |
Type: | Observation |
Udgivelsesdato: | 6. oktober 2000 |
Relaterede pressemeddelelser: | eso0031 |
Størrelse: | 8423 x 7986 px |
Om objektet
Navn: | R Coronae Australis |
Type: | Milky Way : Star : Type : Variable Milky Way : Nebula : Type : Star Formation |
Afstand: | 400 lysår |
Constellation: | Corona Australis |
Kategori: | Stars |
Baggrundsbilleder
Koordinater
Position (RA): | 19 1 53.72 |
Position (Dec): | -36° 57' 9.47" |
Field of view: | 33.35 x 31.66 arcminutes |
Orientering: | Nord er 0.1° droite fra lodret |
Farver & filtre
Bånd | Bølgelængde | Teleskop |
---|---|---|
Optisk B | 451 nm | MPG/ESO 2.2-metre telescope WFI |
Optisk V | 539 nm | MPG/ESO 2.2-metre telescope WFI |
Optisk R | 651 nm | MPG/ESO 2.2-metre telescope WFI |