61 Cygni

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Christof Wiedemair
Posts: 6
Joined: Thu Jan 11, 2018 4:57 pm
Location: Bruneck, South Tyrol
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61 Cygni

Post by Christof Wiedemair »

Hi!
I would like to present the first spectrum I got in collaboration with my students Maximilian and Elina (both 16). It's a spectrum of 61 Cygni obtained with a LX200 10" SCT reflector, a ST-10XME and a DADOS spectrograph with a 1200 l/mm grating. The exposure time was of 3 times 5 minutes for each star and each wavelength range, so 1 h in total. I has been calibrated using an Ormalight 9W energy saving lamp and reduced with BASS.
I would be happy to get suggestions and maybe a recommendation about the easiest way to identify the lines we see in the spectrum.
Best wishes
Christof Wiedemair
61CygA-blue
61CygA-blue
61CygB-red
61CygB-red
61CygA-red
61CygA-red
61CygB-blue
61CygB-blue
Astrogruppe des Cusanusgymnasiums Bruneck
astrocusanus.org
astrocusanus.blogspot.com
Andrew Smith
Posts: 321
Joined: Fri Sep 30, 2011 12:23 pm

Re: 61 Cygni

Post by Andrew Smith »

Nice start. Identification of lines can be difficult. You could try looking at a solar atlas (several are on line e.g. http://adsabs.harvard.edu/full/1995ASPC...81...17K ) or try Richard Walker's Spectral Atlas for Amateur Astronomers, Cambridge University press where I think he used the same spectrograph as you have.

Regards Andrew
Andrew Smith
Posts: 321
Joined: Fri Sep 30, 2011 12:23 pm

Re: 61 Cygni

Post by Andrew Smith »

If you want to find the spectra class of a star this is the best place to start http://vizier.cfa.harvard.edu/viz-bin/V ... ource=B/mk

Regards Andrew
Christof Wiedemair
Posts: 6
Joined: Thu Jan 11, 2018 4:57 pm
Location: Bruneck, South Tyrol
Contact:

Re: 61 Cygni

Post by Christof Wiedemair »

Hi,
thank you Andrew! I know about Walker's Spectral Atlas. That is indeed very useful. I'll also give a look at your link.
Some days ago I've ordered this book:
http://www.cambridge.org/gb/academic/su ... BtGbfmW.97
Hope this will help!
Best wishes
Christof
Astrogruppe des Cusanusgymnasiums Bruneck
astrocusanus.org
astrocusanus.blogspot.com
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