Quote:
Originally Posted by Merlin66
IMHO I think, looking at the continuum, most of the visible energy is in the hydrogen emissions....let's say 80% in the Ha =<0.5 mag below current visual.
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Ken
Im sure this would be the case.
With nova Del, I was able to take 30sec exposures early on when there was mostly a continuum but it was about mag 4
By the time it had dropped to mag 7 I was restricted to 5 sec exposures to prevent saturation of the Ha line. I was stacking 30 x 5 sec exposures using Isis with good results.
Im back in Oz but won't be home til the 26th. Then I have to be awake enough to get up at 3am to take some spectra. It probably will only happen on the weekend. I hope the clouds will stay away then.
Terry