Hi Stan, You may notice a dull yellow glow from the West side of Phoenix. I have my low pressure sodium lamp working now and plan to do some spectroscopic...
Stan, I think the diagram in your book is incorrect. This one: http://hyperphysics.phy-astr.gsu.edu/hbase/quantum/sodzee.html has the shorter wavelength line...
1859
Stan Gorodenski
stanlep@...
Feb 16, 2012 4:44 am
Thanks, Brian and thanks Jeff. Jeff, I see you gave the same link Brian gave but did not see any graph. When Brian gave the same one then it occurred to me I...
Certainly looks that way. I will drop him a line, he is a member of the astro society in the adjacent county to me. The person he mentions in the intoduction...
1861
R. Stencel
colorado.ida@...
Feb 16, 2012 4:07 pm
Hi Stan, A good source for spectrum info is http://physics.nist.gov/PhysRefData/ASD/lines_form.html and they show energy levels for the Na D lines as follows: ...
1862
R. Stencel
colorado.ida@...
Feb 16, 2012 4:09 pm
Several papers have been received, but never too late for more. The editor suggests they can be a bit relaxed about the original deadline, but if you can...
1863
FrankJ12@...
Feb 16, 2012 4:40 pm
Dr. Bob - I already sent in my paper last week. They received all the files and everything looks fine. They will keep me informed on its progress. Frank J M ...
The excess absorption from neutral potassium has now reached the same level as when I first detected it above the noise on 24th May 2009 (0.03A EW) See...
1866
Thierry Garrel
gabalou@...
Feb 19, 2012 5:10 pm
Very nice observations. So it vanished nearly one month after H alpha bump. I still continue eshell observation, not covering potassium. I hope you will take...
1867
R. Stencel
colorado.ida@...
Feb 20, 2012 1:03 am
Congrats on a very successful experiment! On Sun, Feb 19, 2012 at 8:51 AM, Robin Leadbeater <...
Thierry, the next eclipse of epsilon Aurigae is in about 25 years... Cordialement, Olivier Thizy Shelyak Instruments Manufacturing: 77, rue de Chartreuse,...
1869
Thierry Garrel
gabalou@...
Feb 20, 2012 8:08 am
It is not about eclipse, apoastre and peri astre of the system are independant from our sightseing. Cheers T Le 20 févr. 2012 09:05, "Olivier Thizy"...
... The spectroscopic orbital solutions would imply aperiastron is near 2459460 and the next periastron is around JD 2464405. Note that periastron happens a...
1871
Thierry Garrel
gabalou@...
Feb 20, 2012 7:13 pm
Thanks Brian. I wonder what we would see in the spectra during apo astre. The problem is still the highly variable Ha profile due to the primary but we should...
1872
R. Stencel
colorado.ida@...
Feb 22, 2012 12:37 am
Depends which orbital solution you prefer, but periastron was a few years pre-eclipse, either ~2006 Chadima et al. or ~2008 Stefanik et al. ... Depends which...
1873
Thierry Garrel
gabalou@...
Feb 22, 2012 8:00 am
Chadima is not a multilines Rv studies. Stephanik is but not so many. Why not using mask technic on the overall optical domain ? T ... Chadima is not a...
1876
Thierry Garrel
gabalou@...
Feb 22, 2012 4:58 pm
No problem, i think it concerns all the group and the reflexion must be shared. I don't have yet the time and enough data to try to make a selection of ...
See new paper. Dr. Bob co-author. http://astrobites.com/2012/03/01/the-invisible-monster-has-two-faces/ Jeff Hopkins Phoenix Observatory (187283) Counting...
Hi everyone, I was looking in the AAVSO database today and noticed the only zet Aur eclipse coverage in there is fairly sparse. Most of the data comes from ...
1879
FrankJ12@...
Mar 14, 2012 6:17 pm
Hi Brian - I would be very happy to report my photometric data of Zeta Aur eclipse into the AAVSO database. Originally, I had an impression that Jeff would...
I asked the AAVSO for their data, but never got any. Tom claimed he had images. but noone to reduce the data. Jeff Hopkins Phoenix Observatory (187283) ...
Dear Colleagues, The latest SAS Newsletter is available at http://www.socastrosci.org/images/SAS_Vol_10_2.pdf Lee Syner has an interesting article on several...
Dear Colleagues, Announcement! New book on Astronomical Spectroscopy “Small Telescope Astronomical Spectroscopy” Softcover, 240 pages, full color book with...
Dear Colleagues, For those observers interested in astronomical spectroscopy, "Small Telescope Astronomical Spectroscopy" is now available. The pre-publication...
There will be a conference in Hvar, Croatia 2-6 July 2012. The title of the conference is The Most Mysterious Binaries: Significance for Astrophysics See...
