Search found 135 matches

by Rainer Ehlert
Sat Oct 29, 2022 3:28 am
Forum: Symbiotic Stars
Topic: AX Per Bright
Replies: 5
Views: 3405

Re: AX Per Bright

Hi,

I was able to shoot AX Per tonight and see below a graph of the spectrum.

What is the hump at 7056Å - 7062Å ?

Thanks Rainer

AXPer_300s_LISA_1000mm-0012_BDF_NHSA_20221028_16_1D.jpg
by Rainer Ehlert
Sat Aug 13, 2022 2:58 pm
Forum: Novae
Topic: Call for observations of the preoutburst phase of T CrB
Replies: 17
Views: 9175

Re: Call for observations of the preoutburst phase of T CrB

Hi Rainer, Interesting. But the height of a line is a very poor measure as it depends significantly of the resolution at that wavelength. The measure of the equivalent width (EW) will provide more accurate measures. I suggest using plot spectra (Tim Lester), a very nice tool. http://spectro-aras.co...
by Rainer Ehlert
Fri Aug 12, 2022 12:51 am
Forum: Novae
Topic: Call for observations of the preoutburst phase of T CrB
Replies: 17
Views: 9175

Re: Call for observations of the preoutburst phase of T CrB

Hi,

Yesterday night eg. today morning UTC time I imaged T CrB. See below the comparison of 5 spectra from 26-07 to 10-08 and I ahve the impression teh emission lines 4640 and 4684 are stronger or is it just my imagination ?

Thanks for looking

T_Crb_300s_LISA_1000mm-0726_to_0810_comp_16_1D.jpg
by Rainer Ehlert
Sat Aug 06, 2022 6:02 pm
Forum: Novae
Topic: Call for observations of the preoutburst phase of T CrB
Replies: 17
Views: 9175

Re: Call for observations of the preoutburst phase of T CrB

Hi Francois,

I can not send you e-mails. I get answered that your e-mail does not exist. francoismathieu.teyssier at gmail dot com ...

Please contact me at

eastpier at rsfotografia dot com

Thank you and regards Rainer
by Rainer Ehlert
Fri Aug 05, 2022 8:38 pm
Forum: General Topics, Annoucements, Forum Life
Topic: Trouble uploading images ...
Replies: 2
Views: 6183

Re: Trouble uploading images ...

Hi,

This problem continues existing ...
by Rainer Ehlert
Fri Aug 05, 2022 8:34 pm
Forum: Novae
Topic: Call for observations of the preoutburst phase of T CrB
Replies: 17
Views: 9175

Re: Call for observations of the preoutburst phase of T CrB

Hi,

Had a more or less clear night and here another T CrB spectrum.

https://rainerehlert.com/000_Spectra/T_ ... 16b_1D.fit

T_CrB_300s_LISA_1000mm_-0015_BDF_NHSA_20220804_16b.jpg
by Rainer Ehlert
Wed Aug 03, 2022 3:44 pm
Forum: Spectroscopes and Softwares
Topic: Lisa with QSI520i
Replies: 2
Views: 1959

Re: Lisa with QSI520i

Hi David,

Thanks. I will not touch it again ;) and now focus on getting good calibrations testing different ways.

regards Rainer
by Rainer Ehlert
Tue Aug 02, 2022 11:37 pm
Forum: Spectroscopes and Softwares
Topic: Lisa with QSI520i
Replies: 2
Views: 1959

Lisa with QSI520i

Hi, I have a LISA and my camera is an old reliable QSI520i and I ahve followed as good as possible al installation steps according to the user manual. One thing bothers me a bit. According to the calculation the Neon emission Line should be in the position pixel 1167 but after hurs of trying to get ...
by Rainer Ehlert
Tue Aug 02, 2022 5:02 pm
Forum: Novae
Topic: Call for observations of the preoutburst phase of T CrB
Replies: 17
Views: 9175

Re: Call for observations of the preoutburst phase of T CrB

Francois Teyssier wrote:Hi Rainer,

That's good!

Your spectra are welcome in the database if you want
(francoismathieu.teyssier at gmail.com)

All the best,
François

Hi Francois,

Thank you very much. Was the FITS header OK ?

Sure you may upload them as you said they are good

Thanks and regards Rainer