English: The globular cluster NGC 6397, located at a distance of approx. 7,200 light-years in the southern constellation Ara. It has undergone a "core collapse" and the central area is very dense. It contains about 400,000 stars and its age (based on evolutionary models) is 13,400 ± 800 million years. The photo is a composite of exposures in the B-, V- and I-bands obtained in the frame of the Pilot Stellar Survey with the Wide-Field-Imager (WFI) camera at the 2.2-m ESO/MPI telescope at the ESO La Silla Observatory. It was prepared and provided by the ESO Imaging Survey team. The spikes seen at some of the brighter stars are caused by the effect of overexposure (CCD "bleeding").
Colours & filters
Band Telescope
Optical B MPG/ESO 2.2-metre telescope WFI
Optical V MPG/ESO 2.2-metre telescope WFI
dijeliti – umnožavati, distribuirati i javnosti priopćavati djelo
remiksirati – prerađivati djelo
Pod sljedećim uvjetima:
imenovanje autora – Morate pripisati odgovarajuće autorske zasluge, dati poveznicu na licenciju, te naznačiti jesu li načinjene promjene autorskog djela. Prethodno navedeno možete učiniti na svaki razuman način, ali ne na način koji bi sugerirao da Vi ili Vaše korištenje licencorova djela ima izravno licencorovo odobrenje.
dijeli pod istim uvjetima – Ako ovo djelo izmijenite, preoblikujete ili stvarate na osnovu tog materijala, svoje doprinose morate distribuirati pod istom ili kompatibilnom licencijom kao što je i licencija originala.