Swan bands in bright comet 1995 Q1

The image shows the spectrum was obtained by Alain Smette (Kapteyn Astronomical Institute, Groningen, The Netherlands) with the EMMI instrument at the ESO 3.5-metre New Technology Telescope. The spectral coverage was from about 4900 Angstrom (left) to 6200 Angstrom (right) in the green-yellow region. During the 60 second exposure, the spectrograph slit was oriented along the main tail at position angle ~ 145 degrees. It is easy to see three main band systems of the C2 molecule, known as the Swan bands, with band heads at 5165, 5635 and 6192 Angstroms, respectively. They are seen in most comets that approach the Sun and are named after the English pioneer spectroscopist William Swan (1818 - 1894), who first observed these emissions in hydrocarbons

Källa:

ESO

Om bilden

ID:eso9515a
Typ:Observation
Publiceringsdatum:21 augusti 1995
Relaterade pressmeddelanden:eso9515
Storlek:415 x 399 px

Om objektet

Namn:Comet 1995 Q1, Spectrum
Typ:Solar System : Interplanetary Body : Comet
Kategori:Solar System

Bildformat

Originalstorlek
81,5 kB
Stor jpeg
114,5 kB
Skärmstor jpeg
325,6 kB

Skrivbordsunderlägg

1024x768
318,3 kB
1280x1024
450,1 kB
1600x1200
566,0 kB
1920x1200
604,6 kB
2048x1536
779,5 kB

Färger och filter

BandTeleskop
Synligt ljusNew Technology Telescope
EMMI

 

Se även