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).

Crédit:

ESO

À propos de l'image

Identification:eso0031a
Type:Observation
Date de publication:6 octobre 2000
Communiqués de presse en rapport:eso0031
Taille:8423 x 7986 px

À propos de l'objet

Nom:R Coronae Australis
Type:Milky Way : Star : Type : Variable
Milky Way : Nebula : Type : Star Formation
Distance:400 années lumière
Constellation:Corona Australis
Catégorie:Stars

Image Formats

Grand JPEG
1,6 Mio
JPEG taille écran
268,7 Kio

Fonds d'écran

1024x768
264,3 Kio
1280x1024
409,6 Kio
1600x1200
518,3 Kio
1920x1200
528,2 Kio
2048x1536
735,0 Kio

Coordinates

Position (RA):19 1 53.72
Position (Dec):-36° 57' 9.47"
Field of view:33.35 x 31.66 arcminutes
Orientation:North is 0.1° right of vertical

Couleurs & filtres

DomaineLongueur d'ondeTélescope
Visible
B
451 nmMPG/ESO 2.2-metre telescope
WFI
Visible
V
539 nmMPG/ESO 2.2-metre telescope
WFI
Visible
R
651 nmMPG/ESO 2.2-metre telescope
WFI