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The central part of Messier 12
Centre of the globular cluster Messier 12 as observed with the FORS-1 multi-mode instrument on ESO's Very Large Telescope (Cerro Paranal, Chile). The picture covers a region of about 3.5 arcmin on a side, corresponding to about 23 light-years at the distance of Messier 12. It is based on data in five different filters : U, B, V, R and H-alpha. Here only the short exposures were used while for their scientific analysis, the authors used much longer exposures. Guido De Marchi (ESA) reduced the data and Kristina Boneva and Haennes Heyer (ESO) did the final image processing. The observations were obtained with very good conditions, the image quality ('seeing') being around 0.6 arcsec.
Källa:ESO
Om bilden
| ID: | eso0604a |
| Typ: | Observation |
| Publiceringsdatum: | 7 februari 2006 |
| Relaterade pressmeddelanden: | eso0604 |
| Storlek: | 3060 x 3056 px |
Om objektet
| Namn: | Messier 12 |
| Typ: | Milky Way : Star : Grouping : Cluster : Open |
| Avstånd: | 23000 ljusår |
| Constellation: | Ophiuchus |
| Kategori: | Star Clusters |
Skrivbordsunderlägg
Koordinater
| Position (RA): | 16 47 14.25 |
| Position (Dec): | -1° 56' 48.17" |
| Field of view: | 3.39 x 3.39 arcminutes |
| Orientering: | Nord är 0.0° vänster om lodrätt |
Se i WorldWide Telescope:
Färger och filter
| Band | Våglängd | Teleskop |
|---|---|---|
| Synligt ljus H-alpha | 656 nm | Very Large Telescope FORS1 |
| Synligt ljus R | 600 nm | Very Large Telescope FORS1 |
| Synligt ljus V | 554 nm | Very Large Telescope FORS1 |
| Synligt ljus B | 420 nm | Very Large Telescope FORS1 |
| Ultraviolett U | 360 nm | Very Large Telescope FORS1 |