Symbiotic recurrent nova RS Oph in ourburst !!!

Alerts and Monitoring of Novae
Christophe Boussin
Posts: 170
Joined: Sun Aug 21, 2016 6:04 pm

Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Post by Christophe Boussin »

Hello all,

Finally a clear sky to follow the evolution of the RS Oph outburst !!

Here is my contribution with a spectrum of the Halpha line at high resolution obtained on August 11 at 22 h 26 TU (resolution of 18696, JJ = 2459438.435) with my LHIRES III (grating of 2400 lines / mm, acquisition time of 30 min (3 x 600s)).
Halpha line of RS Oph on August 11th 2021
Halpha line of RS Oph on August 11th 2021
Halpha line of RS Oph on August 11th 2021 (zoom)
Halpha line of RS Oph on August 11th 2021 (zoom)
More than ever, clear skies to all !!

Christophe BOUSSIN
CBO (Newton 200 F/5 / Alpy600 / Atik 314L+ / Atik Titan + Mewlon 180 F/12 / LHIRES III 2400 / Atik 460EX / Atik 314 L+) @ ARAS database
Dubreuil Pierre
Posts: 202
Joined: Sat Oct 01, 2011 12:34 pm

Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Post by Dubreuil Pierre »

Bonjour à tous

Un peu de ciel hier soir après des orages dans la journée.

Spectre réalisé avec le spectrographe UVEX(4) G600 750nm RC8 Slit 23µ ...
détails autour de O I 8446
François, si tu à quelques infos sur ce profil ?
Rs Oph proche IR
Rs Oph proche IR
_nocacas2021_20210812_811_Pierre Dubreuil.png (9.23 KiB) Viewed 7034 times
Et avec H-Alpha
Rs Oph  H-alpha + IR
Rs Oph H-alpha + IR
Rs Oph 20210812_860_Pierre Dubreuil.png (9 KiB) Viewed 6917 times

j'envois le spectre FIT

Pierre
Last edited by Dubreuil Pierre on Sat Aug 14, 2021 5:31 am, edited 1 time in total.
Alun Halsey
Posts: 20
Joined: Fri Jan 19, 2018 10:53 am

Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Post by Alun Halsey »

Having both my Alpy 600 and Lhires III attached to C9.25 via flip mirror I managed to acquire lo and hi res spectra last night (12th). Acquisition time for Alpy working at f/6,90 seconds (9x10sec) and
acquisition time for Lhires 21 minutes (7x180sec) both instruments with 23 micron slit.
rs oph_20210812T212639.png
rs oph_20210812T212639.png (26.93 KiB) Viewed 7025 times


_rsoph_20210812_926_alun halsey.png
_rsoph_20210812_926_alun halsey.png (7.12 KiB) Viewed 7025 times

Alun
LHires III + SX Trius pro 694,ALPY 600 + SX Trius pro 825,Star analyser 100,C9.25,Esprit 150 ED Apo, Evostar 72ED with Sol'Ex SHG. Mesu 200 Mk1
Joan Guarro Flo
Posts: 611
Joined: Thu Nov 03, 2011 8:50 pm

Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Post by Joan Guarro Flo »

Hello,

You can see the general evolution of RS Oph.

J.Guarro.
Attachments
RS OPH4.jpg
RS OPH4.jpg (91.77 KiB) Viewed 7004 times
David Boyd
Posts: 161
Joined: Wed Dec 11, 2013 5:50 pm

Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Post by David Boyd »

Continuum flux level dropping as the magnitude fades, V=4.88, 5.44, 6.24 for the 3 spectra below.

H-alpha now less sharply peaked, line flux has increased 3 times, peak velocity relative to rest wavelength increased from ~+30 km/s to +120 km/s
H-beta narrower, line flux unchanged, peak velocity relative to rest wavelength increased from ~+160 km/s to +320 km/s
H-gamma narrower, line flux reduced by factor 0.4, peak velocity relative to rest wavelength steady at ~+360 km/s

David
rsoph_20210809_931_D_Boyd.png
rsoph_20210809_931_D_Boyd.png (45.9 KiB) Viewed 6992 times
RS Oph H-alpha.png
RS Oph H-alpha.png (23.44 KiB) Viewed 6992 times
RS Oph H-beta.png
RS Oph H-beta.png (24.17 KiB) Viewed 6992 times
RS Oph H-gamma.png
RS Oph H-gamma.png (23.14 KiB) Viewed 6992 times
Robin Leadbeater
Posts: 1926
Joined: Mon Sep 26, 2011 4:41 pm
Contact:

Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Post by Robin Leadbeater »

Hi Alun,
Alun Halsey wrote:Having both my Alpy 600 and Lhires III attached to C9.25 via flip mirror I managed to acquire lo and hi res spectra last night (12th).
That is an interesting setup. Do you have a photo? I considered doing the same with my C11 and even bought a 2nd hand 2 inch flip mirror but never got round to trying it so just have the two spectrographs ready wired up and swap them over onto the scope. How well does the EQ6 pro cope? I guess you need some counterweights on the scope to balance it.

Cheers
Robin
LHIRES III #29 ATIK314 ALPY 600/200 ATIK428 Star Analyser 100/200 C11 EQ6
http://www.threehillsobservatory.co.uk
Alun Halsey
Posts: 20
Joined: Fri Jan 19, 2018 10:53 am

Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Post by Alun Halsey »

Hi Robin,

Rather than hijack this thread I will post a few photos of my setup in the "Spectroscopes and Software" section later today. I will add though that there is a lot of weight with the combined spectroscopes/cameras and because of that I prefer to use the CEM60 rather than the EQ6.

Cheers
Alun
LHires III + SX Trius pro 694,ALPY 600 + SX Trius pro 825,Star analyser 100,C9.25,Esprit 150 ED Apo, Evostar 72ED with Sol'Ex SHG. Mesu 200 Mk1
Christian Buil
Posts: 1431
Joined: Mon Sep 26, 2011 6:59 pm
Contact:

Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Post by Christian Buil »

Three RS Oph observations night by using Star'Ex at the direct f/5 focus of a a 200 mm Newton (8-inch).

11.84 / 08 / 2021 : infrared by using a 600 lines/mm 750 nm blaze grating (R=1750) (note evolution of OI 8446 line relative to continuum):

Image


12.89 / 08 / 2021 : H-alpha region by using a 2400 lines/mm grating (R=17000, very similar to Lhires III)):

Image


13.84 / 08 / 2021 : UV by using a 2400 l/mm grating (R=6000 near 4000 A):

Image

Note the detection of an emission on the H & K Ca II core lines:

Image

For info, the UV spectrum of Vega by using the same setup:

Image

Christian Buil
Rainer Ehlert
Posts: 135
Joined: Thu Sep 29, 2011 9:36 pm

Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Post by Rainer Ehlert »

Hi,

Having read a lot about RS Oph I told myself maybe I try it. Maybe, because to the South my neighbour has a Palm tree and that one covers up the whole South :cry:

OK, I was lucky to get RS Oph between two branches :mrgreen:

I took some images on August 10 as well as on August 12. See attached image.

Now I have a question. I guess comparing images with different exposure times is not a good idea, or ? August 10 I used 60 seconds and August 12 I used 120 seconds.

Telescope is a TOA 130 with a 0.6>X reducer with a LISA @25 µm slit and CCD camera QSI520i in binning 1x3.

Thanks in advance for your comments

Rainer

RS_Oph_comparison_b_10-12-082021_NHSA_20210813_et.jpg
RS_Oph_20210810_palmera.jpg
RS_Oph_20210810_palmera.jpg (198.97 KiB) Viewed 6873 times
regards Rainer____Observatorio Real de 14_____MÉXICO_____N 22° W 101°
Christophe Boussin
Posts: 170
Joined: Sun Aug 21, 2016 6:04 pm

Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Post by Christophe Boussin »

Hello all,

Here is my update for the monitoring of the outburst of RS Oph with a new spectrum obtained the 13th of August at 21 h 56 TU (resolution of 520, JJ = 2459440.4137) with my Alpy 600 and an acquisition time of 375 s (25 x 15 s) :
RS Oph on August 13th, 2021
RS Oph on August 13th, 2021
_rsoph_20210813_914_Christophe Boussin_3700_7565.png (100.25 KiB) Viewed 6863 times
RS Oph on August 13th, 2021 (tentative identification of some lines from PlotSpectra)
RS Oph on August 13th, 2021 (tentative identification of some lines from PlotSpectra)
Clear skies to all !!

Christophe BOUSSIN
CBO (Newton 200 F/5 / Alpy600 / Atik 314L+ / Atik Titan + Mewlon 180 F/12 / LHIRES III 2400 / Atik 460EX / Atik 314 L+) @ ARAS database
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