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Old 23-05-2017, 10:39 PM
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Terry B
Country living & viewing

Terry B is offline
 
Join Date: Mar 2006
Location: Armidale
Posts: 2,789
I had more clear skies last night and was able to take more images of this nova. I also took a simultaneous spectra but the spectrograph on my scope at the moment is my LHIRESIII. It is only useable on bright stars but I thought I would try and use it.
V mag was 11.16 so it had dimmed a little since the previous night. The spectrograph is centered on Ha frequency at the moment which is in the R filter band using photometry filters. It measured R=10.0
I only took 15 mins of exposure for the spectra but could identify the Ha emission. The background continuum was virtually not visible. The S/N is low but I can still measure the expansion velocity at about 1000km/s.
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