Dave, Test were done until 8500A but simulation shows you can go much higher. Be careful in this area ad the blue region of the second order will overlap; a...
Dear all Due to SPAM attack, the forum has been greatly altered. My personal account was suspended and the table erased. In the meantime, the Forum is not as...
Sorry to hear that Valerie, doesn't seem to get any easier with anything on the web! regards, Ken ... Sorry to hear that Valerie, doesn't seem to get any...
That's not good news. In my opinion spectro-l forum/list should be moved to another server that allows posting of attachments. I am amazed at the members of...
Hi Adam, I subscribe to receive the messages by e-mail and they all get through intact including the attachments. Never seen any spam on here either. Robin...
Hi Adam, Yahoo turned off the ability to post attachments because of the potential for spreading viruses. IMO it was the correct thing to do. As Robin posts,...
4956
BM
bmauclaire@...
Jul 3, 2008 8:12 pm
Hello all, Last 30th June, I've taken spectra of Delta Sco and 54 Cyg (id. Lam Cyg). - Dela Sco has his activity increasing, it needs more spectra; - 54 Cyg...
4957
BM
bmauclaire@...
Jul 3, 2008 8:19 pm
On Thu, 3 Jul 2008 22:11:52 +0200 ... See how last Spcaudace's function (spc_dry) of automatic spectrum dry (removing telluric lines) works ;-) It's available...
4958
ernst-pollmann@...
Jul 6, 2008 7:49 am
Dear Olivier! During our meetings in Heidelberg and in Essen you spoke of a meeting in June you would have with Coralie Neiner regarding our intention of an ...
Attached, an echelle spectrum of HD200775, show a significant evolution from my latest observation (Sept. 207). See PNG files 200775_1.png (global view) and...
4960
Stan Gorodenski
stanlep@...
Jul 7, 2008 4:58 pm
Attached is a spectrum of Betelgeuse I took on the night of Feb 9-10. I was just starting to learn how to take images and getting to know the spectrometer and...
Hi Stan, The only reason to retake Neon spectra is provide a more accurate wavelength calibration. If nothing in your setup has changed since taking the first...
4962
Stan Gorodenski
stanlep@...
Jul 7, 2008 6:56 pm
Hi Jeff, ... I already know this, but also you want a neon calibration, or some other source, to be able to measure doppler shifts in your target spectrum. ...
Hi Stan, I take two or three frames each time just in case one is no good for some reason but I generally chose one frame from each set and stack them if I ...
Stan, Here are some calibrated high resolution spectra of Betelgeuse to compare with. http://atlas.obs-hp.fr/elodie/fE.cgi?c=o&o=betelgeuse They are from the...
Hi Robin, Thanks for the information. I am curious since I posted to the SW-Astrophysics list and you responded to the spectro-l list. Since some of the people...
4967
Stan Gorodenski
stanlep@...
Jul 7, 2008 8:21 pm
Thanks, Robin. It is good to see the graph of the neon lamp vs. the neon library. This is what I've observed. The lines usually do not match the library lines...
4968
Stan Gorodenski
stanlep@...
Jul 7, 2008 8:34 pm
Robin, One thing that has been bothering me is the other lines seem to be too strong compared to the Na lines, and the graph you have shows this. Is it because...
Hi Jeff, I only saw the spectro-l posts and am not a member of WS-Astrophysics. I will investigate it though. You are welcome to copy my comments there if ...
Hi Stan, It might be an effect of the different resolution particularly if the FWHM of the lines are different (The ELODIE R will be much higher) but it is ...
Hi Stan, ... Sounds like a good strategy to me. The resulting stack will have improved S/N in the weak lines without saturating the strong ones. Robin...
Stan, You can also look at UVES high resolution spectrum. Use the 'plot' function and download the spectrum in ASCII format after selecting the wavelength...
Stan, Also, note that there are some strong atmospheric lines in the Sodium doublet area (same as in H-alpha region). Elodie is a spectrograph that was located...
4974
Stan Gorodenski
stanlep@...
Jul 8, 2008 7:34 am
Olivier, When you say atmospheric lines, do you mean O2, H20, or CO2? Stan...
4975
Stan Gorodenski
stanlep@...
Jul 8, 2008 3:57 pm
I just looked at VSPEC which I should have done before. I attempted to do a telluric, i.e., water, line correction on the Betelgeuse profile (about...
Stan, visualSpec only has atmospheric lines around H-alpha while there are several that exist near Sodium doublet. This is a missing feature in visualSpec for...
4977
BM
bmauclaire@...
Jul 8, 2008 4:38 pm
On Tue, 08 Jul 2008 18:20:30 +0200 ... It is perhaps H205.dat which has watter's lines from 5838 to 6648. But Ernst has posted a file that include this...
Hi Oliver, It seems the water vapor lines are of much interest, but I wonder about atmospheric absorption of nitrogen and oxygen lines. There seem to be some...
Hi Stan, Olivier, From: Olivier Thizy ... My version of Vspec finds line in the Na D area. I have two files in the h2o folder (in the attached zip file) Robin...
