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).
Źródło:ESO
O zdjęciu
Identyfikator: | eso0031a |
Typ: | Obserwacje |
Data publikacji: | 6 października 2000 |
Powiązane komunikaty: | eso0031 |
Rozmiar: | 8423 x 7986 px |
O obiekcie
Nazwa: | R Coronae Australis |
Typ: | Milky Way : Star : Type : Variable Milky Way : Nebula : Type : Star Formation |
Odległość: | 400 lat świetlnych |
Constellation: | Corona Australis |
Kategoria: | Stars |
Formaty zdjęć
Współrzędne
Pozycja (RA): | 19 1 53.72 |
Pozycja (Dec): | -36° 57' 9.47" |
Pole widzenia: | 33.35 x 31.66 arcminutes |
Orientacja: | North is 0.1° prawo of vertical |
Kolory i filtry
Pasmo | Długość fali | Teleskop |
---|---|---|
Optyczny B | 451 nm | MPG/ESO 2.2-metre telescope WFI |
Optyczny V | 539 nm | MPG/ESO 2.2-metre telescope WFI |
Optyczny R | 651 nm | MPG/ESO 2.2-metre telescope WFI |