The First MACHO Spectrum
Composite spectrum of the two very close objects seen on the HST image (ESO Press Photo eso0140). It is based on four 1500-second exposures that were obtained with the FORS2 multi-mode instrument at the 8.2-m VLT KUEYEN telescope on February 2, 2001. The presence of certain metal and alkali resonance lines, in particular of sodium (Na), is typical of a cool stellar object. Telluric molecular bands (from the Earth's atmosphere) are indicated with an earth-symbol.
Credit:
ESO
About the Image
| Id: | eso0140b |
| Type: | Chart |
| Release date: | 5 December 2001 |
| Related releases: | eso0140 |
| Size: | 1003 x 682 px |
About the Object
| Name: | Hubble Space Telescope, MACHO, Spectrum, Very Large Telescope |
| Type: | • Milky Way : Cosmology : Phenomenon : Lensing • Early Universe : Cosmology : Phenomenon : Dark Matter • X - Cosmology • X - Illustrations |
Colours & filters
| Band | Wavelength | Telescope |
| Infrared I |
800 nm | Very Large Telescope FORS2 |
Images
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