OHP spectroscopy workshop - Steve Shore video

AUDE (association) spectroscopy workshop at Observatory of Haute Provence (OHP) took place between august 8th to august 14th.


Here are the videos of Steve Shore on astrophysics and spectral analysis:

1/ August 9th - introduction to spectral analysis, Equivalent Width, why the sunset is beautiful and beyond the reddish color (diffusion)...
http://www.astrosurf.com/thizy/ohp2016/20160809%20Spectral%20Analysis%20101%20(OHP%202016).flv

2/ August 10th - line profile & how deep we are seeing the atmospheres
nota: sorry, 3 files due to technical problems!
http://www.astrosurf.com/thizy/ohp2016/20160810%20Spectral%20Analysis%20101%20(OHP%202016)-A.flv
http://www.astrosurf.com/thizy/ohp2016/20160810%20Spectral%20Analysis%20101%20(OHP%202016)-B.flv
http://www.astrosurf.com/thizy/ohp2016/20160810%20Spectral%20Analysis%20101%20(OHP%202016)-C.flv

3/ August 11th - "absorption lines are precious, emission lines are ambiguous", opacity, winds & jets
nota: sorry, 2 files due to technical problems!
http://www.astrosurf.com/thizy/ohp2016/20160811%20Spectral%20Analysis%20101%20(OHP%202016)-A.flv
http://www.astrosurf.com/thizy/ohp2016/20160811%20Spectral%20Analysis%20101%20(OHP%202016)-B.flv

4/ August 12th - flux calibration and ESO standard stars, stellar rotation, temperature & classification, pulsations, convection & turbulence, (exo)planets...
http://www.astrosurf.com/thizy/ohp2016/20160812%20Spectral%20Analysis%20101%20(OHP%202016).flv

5/ August 13th - binaries
some comments before
http://www.astrosurf.com/thizy/ohp2016/20160813%20Spectral%20Analysis%20101%20(OHP%202016)-A.flv
main talk
http://www.astrosurf.com/thizy/ohp2016/20160813%20Spectral%20Analysis%20101%20(OHP%202016)-B.flv

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Here is the video of Martin Dubs talk on meteor spectroscopy:
http://www.astrosurf.com/thizy/ohp2016/20160810%20Meteor%20Spectroscopy.flv

with the PDF file of the slides Martin used during his talk:
http://www.astrosurf.com/thizy/ohp2016/MeteorSpectroscopy%20OHP%202016%20Dubs.pdf


Here is the video of François Teyssier on atmospheric extinction, how to find the best reference star and MatLab tool for publication (including ARAS newsletter):
http://www.astrosurf.com/thizy/ohp2016/20160811%20Ref%20star%20importance%20-%20MatLab.flv


And some pictures of the workshop on my Flickr account:
https://www.flickr.com/photos/thizy/albums/72157672284547115


Enjoy !
Olivier

Observing under clear skies

Clear sky tonight - I am acquiring several spectra starting with my favorites VV Cep, P Cygni and couple of Wolf Rayet stars to prepare OHP workshop which starts on tuesday.

Here are several shots with the Canon EOS 5D Mark III and the new Samyang 14mm F/2.8 lens (used at F/5.6 with ISO 3200 and 30sec exposures):

 

inside the control room with the spectrograph in the open

inside the control room, practicing Go game!

Scopius and Sagittarius with milky way above the dome

Mily way above the dome

Milky way from home

view toward the North pole

view toward the North-East with Cassiopae rising & Cygnus way up the sky

the sky above the open dome with lights on

view from inside the dome, Delphinus constellation visible

Night meteor of august the 4th

On the night of august 3rd to 4th, I acquired a serie of long exposure with the EOS 5D Mark III DSLR and the Canon 24-105mm zoom (set at 24mm). I got lucky with a bright meteor just above my observatory dome:

Here is a cropped of the meteor ifself:

new Samyang 14mm f/2.8 lens

I received our new Samyang 14mm f/2.8 lens for the Canon. Here are couple of shots after a storm at home...

it continues...

A superbe night tonight with a very good seeing (guiding is done below 3" or 3.5pix on the Atik Titan and echelle fiber injection; this is rather unusual!) and sky brightness is given with the SQM at 20.7 (21 measured but I have a 0.3 offset - just can't remember which direction!)... so nice weather, while not for long, continues!

I am taking my fourth series with Rachel's Canon EOS 5D Mark III and the 24mm zoom mounted on the Polaris system for some horizon paning during the night. The goal is to do another timelapse; this one should be the best so far! So timelapse continues...



I have acquired several Be star spectra including QR Vul which I found in outburst a week ago. I confirm this outburst but I noticed some change in Halpha in the course of the week - a star to monitor as its activity continues!

Then I am watching the new Star Treck web serie. It is based on the original serie but with new actors and new scripts. Those fans have redone the sets and are doing a great job in making those films. It is called Star Trek continues...

Oh... and here is a picture of inside the observatory of me watching an episode of Star Trek continues... :-)

Timelapses

For the last two nights which were excellent, I played with Rachel's EOS 5D Mark III with the 24-105mm lens (I would have prefered a shorter & fix focal length) and a Polaris motorized tripod to add some movement to the camera during the night shots.

RAW image were preprocessed by Rachel with LightRoom. I then combined them with VirtualDub and added musics (from Jamendo web site) edited with Audacity.


On the night of july 28th I did one timelapse above the dome while observing several Be stars with the echelle spectrograph.

 

 

On the night of july 29th I took a timelapse of the milky way above the mountains from home with dramatic effect from the clouds. µAt the same time, I was doing long monitoring of the pulsating star BW Vul to get a second set of data to analyse... lot of work to do on this now.

Enjoy viewing those timelapses as much as I enjoyed making them! :-)

Be star QR Vul is in outburst

I have done several Be stars on the night of the 28th of july including QR Vul which has been seen in emission couple of times since 2008 but not recently. I was surprised to see that QR Vul was in emission in my spectrum:

Compare ith the spectrum taken back in may:

This is why Be stars are fun stars to observe with a spectrograph! :-)