View Single Post
  #3  
Old 10-09-2021, 01:36 PM
Rob_K
Registered User

Rob_K is offline
 
Join Date: Oct 2006
Location: Bright, Vic, Australia
Posts: 2,150
Last night was good. The nova is now in the mag 9s and generally a star of that magnitude is out of range for me spectroscopically. But because virtually all the visible light is coming from 3 narrow emission lines (and dominated by one, H-alpha), the spectrum was still easily gettable. Effectively, the low-res spectrum is one bright dot & two fainter ones!

The nova itself is now very red, in consequence of the dominance of the H-alpha emission.

Cheers -
Attached Thumbnails
Click for full-size image (RS Oph to 09 Sept animation small.gif)
149.4 KB15 views
Click for full-size image (RS Oph spectrum, 09 Sept 2021 graph text small.jpg)
162.4 KB11 views
Click for full-size image (RS Oph, 09 Sept 2021 text sm.jpg)
147.0 KB17 views
Reply With Quote