Bonjour Christian et la liste Pour la calibration de mes spectres j'utilise en premier les raies telluriques autour de la raie Halpha. Si elles ne sont pas...
Hello Robin, Thanks a lot for your useful reply, which in turn raises two more questions: 1) "you have overexposed it so it is saturated in the centre...
Après ne pas avoir utilisé mon LHIRES pour quelques mois, maintenant sa roue de mise au point est et reste très dure à tourner, même si je dévisse les...
Hi Nando ... If you look at the pixel counts in the fits file you posted on the VdS group I can see large areas where the count is a constant 32767 which is...
C. Buil - 27/04/2010, LISA spectrograph (new version...), infrared - the red geant spectrum is visible. F. Teyssier, also the 27/04/2010, Lhires III 150 l/mm, ...
7602
mauclaire
bmauclaire@...
May 4, 2010 3:47 am
... Bonjour, LA nova doit etre bien rouge desormais ! Un peu de couleur dans la page mettrait de gaite. J'aurais bien ete interesse par les conditions de prise...
7603
BM
bmauclaire@...
May 4, 2010 3:50 am
Re. Desole, pour les conditins de vue c'est le tabeleau d'en haut. Ce serait plus pratique d'avoir cela a proximite du spectre lui-meme, la page commence a...
Autres/other candidates : HD 46485 O7 Vn(e) HD 120678 O8 III:nep O star catalog of Maiz-Apellaniz and al (2004) Jorick S. Vink: on the presence and absence of...
The following might be of interest to UK based readers or those further away who might like to spend some time at a typical English seaside resort combined...
Salut à tous, une intriguante étoile Be peu documentée sur Bess, HD60062, haute dans le ciel et assez facile malgré sa magnitude, mérite nôtre attention....
Hi all, Last night, just taking advantage of having accomplished my observational schedule a little early, I aimed the telescope to SS Cyg, now in discussion...
I have some big plastic fiber about 1 or 2 mm dia it could be easy to increse temp ontil we are able to make it taper at one end do you thing this could be...
Un nouveau spectre de V407 Cyg au Lhires III 1200 traits/mm produit pas José Ribeiro : http://astrosurf.com/aras/V407Cyg/v407cyg.htm L'étoile est donnée...
Hi everyone, I continue to be plagued by an interference pattern in my spectra taken at 2400 l/mm. This pattern is improved somewhat depending on the focus I...
Hi Jim, I have problems from time to time and at some wavelengths. I am currently clear at H alpha but can see ~2% ripple at 7699A. It is almost certainly the...
according to CBET 2273: 20100508 : "POSSIBLE NOVA OR NEW CATACLYSMIC VARIABLE IN PEGASUS On May 7.4 UT, Dae-Am Yi, Yeongwol-kun, Gangwon-do, Korea, reported...
Une nouvelle mise à jour de Rlhires : Mesure et correction de la non-linéarité d'un détecteur : http://astrosurf.com/buil/rlhires/tuto4.htm Ajout de...
Bonjour, LHIRES (v1.00.3) semble un bel outil pour le traitement de nos spectres. Malheureusement, pour les flats, je récupère le message d'erreur ci-joint. ...
... Hello Jim, Robin and others, The ripples appear often in the red and get redwards stronger. The Si of CCD-chip gets transparent in this wavelength area, so...
Hello friends, in the context of the self bulilding of a echelle spectrograph (together with Berthold Stober) I bought a ThAr HKL. It would be of interest to...
The intensity of the neutral Potassium absorption line at 7699A in the spectrum of eps Aur is currently dropping which may be a precursor to the anticipated...
Hi Jim, if you observe interference fringes such as in your image it is helpful to calculate the optical thickness or separation of the surfaces causing the...
Hi Lothar, I just gave an answer to Jim on the other thread "Interference pattern", then I saw your answer here. That the fringes increase towards the red...
Hi Martin, Here is a reference to some recent work on the problem. http://www.astrosurf.com/aras/fringing/ripple.htm I can confirm that for my fringes at least...
Actually, re-reading Peter Schlatter's report on the problem, it is not clear if the glass he is refering to is the CCD cover glass or the camera window. My...
7624
Stan Gorodenski
stanlep@...
May 9, 2010 4:44 pm
Just scanning through the link you provided, I notice none of the SBIG cameras were tested. Does anyone know what the interference effect is in these cameras? ...
Hi Robin, I should have given that reference myself, since I discussed this issue with Peter a while ago but did not remember where it has been posted (my...
