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Dear all A little update and again a call for help. An expert in PN found the object interesting. It could be a be a combination of ionization and scattered star light. In the IPHAS images there a number of objects which is a bit like this, faint, quite round and structure less and with much brighte...

Hi all

Here's my only shot so far of the Nova, Star Analyser - 2013-08-14 23:30 UT.

Hi Francois Thanks for the information. Done some reading, this is where I am right now. It seems it's a good candidate for a WZ Sge-type dwarf nova, only 4 or 5 is known. SWIFT was looking at it some days ago. Although I'm little confused, I hope my assumptions is correct. It should be a very small...

Hi again Been working hard on processing and validating the data from the two days. It seems that my calibration and data reduction is okay, so the major error is coming from guiding, clouds, seeing, atmosphere and missing flats. I think I see hydrogen emission in the spectrum from 5. April compared...

Hi there My second attempt with this nova was a little more successfully. I had hard time finding a direction that will produce as little contamination as possible, and when I found clouds came. Here's the result, I'm really not sure what to make out of this. I know Beta Aur is not the best choice f...

Thanks Paolo

I've been out every night for for some days now, so I have only just looked at the data. The recordings from yesterday, 2. April, was the first without any trace of the Na emission, but more processing must be done to verify that.

I'll try again this evening.

Hi there

After a nice Easter dinner with family I got some data this evening. A very fast data reduction on some of the images shows the Na emission. More data will follow.

http://www.nightsky.dk/Astronomi/comets ... cal_na.jpg

Hi Paolo The data isn't good enough, I don't have a zero point on the tail. Even the comet "core" is to big for good wavelength calibration, so after a rough first zero order calibration with the dispersion from my ref. star, I identified the Na line and recalibrated with the Na 5893 line ...

Lars, I don't understand if you refer to telluric sodium that, being an emission source over the entire field, is undetectable with slitless spectroscope like SA100. Of course, you're right, - I got lost in my idea on how to measure it. :oops: When that's the case, isn't it correct to assume that t...

Thanks Christian

About your conclusion, do you see evidence of Na emission in the ref. star spectra?