Author Topic: Spectroscopy of Nova Sgr2  (Read 1820 times)

oldfrankland

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    • Astrophotography by Jim Ferreira
Spectroscopy of Nova Sgr2
« on: June 21, 2015, 08:45:50 AM »
Here's an interesting comparison of Nova Sgr2 spectra from April 04 and June 20.  In April, the nova's expanding shell was still Fe rich, but my June 20 spectra shows the nova has entered the nebular phase with many forbidden lines of Fe, N and O.  Sadly, the seeing was quite poor causing the plotted spectral lines to be broader than they actually are.......we do what we can.  The nova has also began to fade more quickly and is presently at ~8.2 magnitude.  Would have liked to have followed the nova's development more closely, but its low altitude made many attempts to record spectra less than productive.

04 April
http://www.lafterhall.com/nova-sgr2-2015_spec_alpy600-c9_20150404-1335ut_001.jpg

20 June
http://www.lafterhall.com/nova-sgr2-2015_spec_alpy600-c9_20150620-0830ut_001.jpg

Spectroscopy rocks!
« Last Edit: June 21, 2015, 09:14:05 AM by oldfrankland »
Jim Ferreira, Livermore
Dabble in Astrophotography, Spectroscopy, Solar Astronomy
http://www.lafterhall.com/astro.html