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Fresh spectra from today, just before sunrise: _bfcyg_20150324_091_psomogyi.png R~3500 (LhiresIII + 600/mm + 23um slit). I didn't feel it as bright as 9.5 mag on AAVSO, was still hard to guide on (might had a defocus of the scope), some noise present but the spikes to the left are real. But, continu...

Yesterday caught a foggy night (between 2 and -5C), explored further LHires with 600/mm grating. Lots to tune, star image suboptimal. I was still pushing the buttons manually, solved remote calib fully only later today. V694 Mon (within trees): _v694mon_20150308_0320_psomogyi.png Noticed later I for...

Hubert, I've seen this error at others too, but to me it usually appears just as a small Z-shaped ripples (> 14 mag objects with the Alpy). The problem I think the smile effect calibraion is too ideal - in reality it's bended and has a triangle shape instead straight line -, so I think it works well...

Okay, noticed I've put in the Ar-Ne lamp (seen tiny Ar lines I could fit to at IR end, after summing 11 exposures of 0.2 secs). Also learned how to fix bad guesses in CALIB\g600.lst: set the polynom to order 1, then spot the outstanding value in the ISIS logs. Setting it back to order 2, I've got RM...

Thank you Francois, yes it was the 600 grating.
A more correct calibration is in progress, then I will send it.

Gabor,

Feel welcome, I hope you can get a starter kit soon so that you can get a feel of the universe outside - by practice and theory at the same time!

Cheers,
Peter

I have attached the LHiresIII to my 250/1000mm Newt (had to collimate it on guide star ;-) ), have put in an APM barlow (2.67x). I've also done the calib upgrade, but still operated manually (mini XLR plug is missing). Looks to be a usable setup. First time calibration (1 times for all): flat: + neo...

Nearly started before Francois's last spectra, a 5 hours exposure (with some technical breaks): _ugem_20150306_793_psomogyi.png Animated gif of every 2 x 20 minute exposures - except last that was 3 x 20 min: _ugem_20150306_793_981_psomogyi.gif Ref. star was: 79-Gem, taken only 4 times (using averag...

Joan, thank you but the exceptional season has been ended here ( https://www.meteoblue.com/hu/magyarorsz%C3%A1g/id%C5%91j%C3%A1r%C3%A1s-tata ). Waiting till this weekend if you or others come up with new capture, and I will make a series in the newsletter. Just noticed your +1 unpublished spectra of...

Saturday and Sunday (probably the last from me), further blue continuum drop: SSAur_20150214_15.png Notice on technical difficulties, not to do same mistake by others: - Saturday's run just took 2 hours, in perfect conditions - Sunday I was careless, first 1-2 hours while Newton + environment coolin...