C/2013 US10 Catalina

[Jacques Montier]

Hello all,

C/2013 US10 (Catalina) spectrum of the last night.
The brightness is slowly decreasing (Visual magnitude 9.23 JPL Solar System Dynamics)

False colour image

comete_catalina.png (90.28 KiB) Viewed 3950 times

Spectral profile

Catalina_profil.png (46.66 KiB) Viewed 3950 times

Catalina_profil_detail.png (61.88 KiB) Viewed 3950 times

Cheers,

[Paolo Berardi]

Very nice observation, congratulations Jaques! The solar continuum is clear and several Fraunhofer lines are starting to be pronounced. The comet activity is still well appreciable from many emission bands in the spectrum (distance comet-Sun ~ 1.8AU).

Now it should fading rapidly...

Interesting to see how the comets activity changes with distance from Sun on Christian webpage:

http://www.astrosurf.com/buil/us/spe8/comet.htm

Paolo

[Jacques Montier]

Thank you Paolo !
Your link to Christian webpage is very interesting.

Best regards,