"Jeff Hopkins" <phxjeff@...> schrieb: An interesting thought. The hydrogen alpha region is in the middle of the photometry R band. Perhaps using R band...
Hello, a nova has been discovered in Andromeda. Very faint for a Lhires III but you should try with a star Analyser! mag about 12.7 and the following precise...
Bonjour, Pendant les RASSP nous avons tents de raliser la manip pour trouver les lments chimiques de l'atmosphre de Jupiter, avec un LHIRESIII en 300tr/mm, un...
Bonjour Bernard, Tu attaque fort avec un astéroide de magnitude 16.7 ! C'est bien, mais très challenging. Le big problème, c'est le fond de ciel. La trace ...
(english message follows) Bonjour à tous, J'ai le grand plaisir de vous donner le lien d'un petit clip vidéo que j'ai monté à partir de quelques scènes...
Hi everyone, It has been awhile since I emailed the group. I have been trying out the Star Analyzer 100 on a few quazars with not too much success. I am not...
James, At least part of the answer is determining the camera responce curve and then using that to initially correct the spectra; second stage is then to ...
Hello, A nova has been reported in Scorpius and is bright enough for Lhires III spectrographs but can of course be done with Star Analyser to see evolution...
Hello Jim, The processing is the same for slitless spectrographs as for slit spectrographs so you can essentially follow the same procedures used for the...
Hi again Jim, Looking at the spectrum of Altair you attached, it seems you are not getting as well defined Balmer lines as you should be getting with the Star...
Bonjour Christian, Merci pour les conseils, j'avais pris cet astéroïde car il trainait par là. Avant de me lancer dans un petit spectro à fente je voulais...
Jean-Pierre, c'est une très bonne réalisation, qui montre bien comment faire évoluer l'usage du StarAnalyser ! Bien vu l'usage de la fente LhiresIII. Je...
I am on it now using the Star Analyser (The first clear night for weeks!) It looks about mag 14 now so the spectrum is visible but rather noisy. There is no...
I gave it my shot at imaging with Star Analyzer 100. The image below (60mins) shows the nova field and what I believe is new nova. Very faint. I can not see...
Jim, Unfortunately your jpg image is only 8-bit and all signals above 256 ADU (most) are saturated. Do you have a 16 or 32 bit image? Bernard ... (60mins)...
Please disregard my last message ... I was looking at the wrong spectra. If the one I'm now looking at is the correct one then I agree that very little is...
Hi Jim, Your image quality looks excellent. (wonderful tight round stars and the molecular lines in that cool star on the right are showing up well) Here is my...
... From: Robin Leadbeater To: spectro-l@yahoogroups.com Sent: Friday, September 05, 2008 12:18 PM Subject: Re: [spectro-l] Nova in Andromeda ... Here is the...
Bonjour Jean-Pierre, Great work on your interesting spectrograph! My spectrograph has a transmittance diffraction grating with 600 grooves/mm. The camera and...
Bonjour Tom, Thanks a lot for your information about Wratten filters. As my aim was mainly cometary spectrometry, I didn't give much attention to filters...
On Thu, 4 Sep 2008 01:07:33 +0200 ... Vraiment somptueux et pro facon saga Starwar avec la musique facon symphonique. Espiegle et leger, cette video nous...
BM
bmauclaire@...
Sep 6, 2008 12:13 pm
5190
Hi Tom, That is an interesting arrangement. Is the grating you use blazed? If so at what first order wavelength? How does the efficiency using the higher...
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