R Aqr spectra requested by Margarita Korovska

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Re: R Aqr spectra requested by Margarita Korovska

Postby Francois Teyssier » Thu Oct 19, 2017 7:33 pm

Tanks a lot Paolo
That's great and very informative!
More later

Ciao!
François
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Re: R Aqr spectra requested by Margarita Korovska

Postby Francois Teyssier » Sat Oct 21, 2017 5:38 pm

Approximative size of the hole of eshel (50 mcm) with my setup
Autoguiding RMS < 1 arcsec

RAqr_Hole.PNG


So I can't get the jets shown by your image

It should be interesting to get an image with the slity aligned with the jets

François
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Re: R Aqr spectra requested by Margarita Korovska

Postby Paolo Berardi » Sun Oct 22, 2017 7:15 pm

Hi François, the narrow slit (31 micron) should be on the jet now (PA 35°, for the large slit observation it was at 15°).

The Doppler shift is appreciable on the 2d spectrum. The north-east "lump" is noticeably redshifted on the oxygen line.

The result:
Image

A detail of the slit position:
Image

Perhaps I should try with the 2400 l/mm grating to increase the spectral resolution (but I don't know if the SNR is enough). Also try to observe H-alpha line.

Paolo
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Re: R Aqr spectra requested by Margarita Korovska

Postby Joan Guarro Flo » Mon Oct 23, 2017 9:49 am

Buon lavoro, Paolo !!

Joan.
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Re: R Aqr spectra requested by Margarita Korovska

Postby umberto sollecchia » Tue Nov 07, 2017 5:43 pm

Bonjour, J'ai essayé une observation sur la région H-alpha de la même manière que Paolo, mais avec une grating de 1800 l / mm et une fente de 50 microns. Voici le spectre 2D et son profil. Umberto

lodestar r aqr.jpg
lodestar r aqr.jpg (47.65 KiB) Viewed 247 times
Spectro 2d crop.jpg


raqr_20171031_788_Umberto Sollecchia.png
raqr_20171031_788_Umberto Sollecchia.png (17.5 KiB) Viewed 247 times
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Re: R Aqr spectra requested by Margarita Korovska

Postby Christian Buil » Thu Nov 09, 2017 12:21 am

eShel spectrum of R Aqr the 7.9/11/2017 (RC 10 inch, modified eShel (135MM Samyang), ASI1600MM camera):

Zoom on Halpha region:

Image

Zoom on OIII lines:
Image

Christian
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Re: R Aqr spectra requested by Margarita Korovska

Postby umberto sollecchia » Mon Nov 13, 2017 11:38 pm

Bonsoir, le profil de l'observation de cette soirée 13-11-2017. Umberto
Attachments
raqr_20171113_739_Umberto Sollecchia.png
raqr_20171113_739_Umberto Sollecchia.png (19.35 KiB) Viewed 202 times
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Re: R Aqr spectra requested by Margarita Korovska

Postby James Foster » Wed Dec 06, 2017 9:49 am

Here is a very late (14Oct17) Ha Spectra of this interesting star I got with the LhiresIII:

Image
I'll try to get one more before the object get to close to dusk!

James
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Lhires III (2400 & 1800 ln/mm Grat) Spectroscope,
LISA Visual & IR Kit Spectroscope, and
Star Analyzer 200
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Re: R Aqr spectra requested by Margarita Korovska

Postby Francois Teyssier » Wed Dec 06, 2017 4:24 pm

Nice Spectrum James

The line is [N II]6584 and you have the other line of the doublet in the blue of H alpha ([NII] 6548)

Remember to send me the spectra for the database ;)

All the best,

François
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Re: R Aqr spectra requested by Margarita Korovska

Postby Olivier GARDE » Thu Dec 14, 2017 9:59 am

A spectrum taken with very bad weather conditions (fog, wind, humidity), just 2x1200s exposure not enough with an eshel spectrograph to have a good SNR in all orders.

here's the H Alpha region, H Beta and HeI 5876.

François, I don't know if this spectrum is enough good for the database....

Image

Image

Image
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
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