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RR Lyrae maximum night 5 to 6 august 2013 / Alpy 600

PostPosted: Wed Aug 07, 2013 10:06 am
by Olivier Thizy
Here is an acquisition of the RR Lyrae maximum that occured during the night of 5th to 6th august 2013 (during OHP spectroscopy workshop).

Equipment: Televue 85mm refractor, NEQ6 mount and Alpy 600 spectrograph with Atik 460EX camera.


The first is the animation of each spectra done with ISIS:

20130805 RR Lyrae animation.gif
20130805 RR Lyrae animation.gif (1.02 MiB) Viewed 2364 times



Second is a 2D spectrogram showing the Balmer lines shifting toward the blue until the shock wave; the Balmer lines don't show emission in my spectra but show they are filled up at that time:

20130505 RR Lyrae 2D spectrogram.png



Cordialement,
Olivier Thizy

Re: RR Lyrae maximum night 5 to 6 august 2013 / Alpy 600

PostPosted: Wed Aug 07, 2013 1:49 pm
by Thierry Garrel
Hi Olivier,
Three absorption lines at right of H alpha in the dynagraph are shifted too. If tellurics it seems that the calibration has move during observation. Could you corfirmed ?
Secondly, an intense emision line appeared in the interpolated animation during three frames. Could it be a bias of interpolating method with a cosmic added on frames between and after the strike ?

AmitiƩs
Thierry