Bonjour Pierre.
Ton réseau à 1200 traits est blazé à quelle longueur d'onde?
Est-ce le même réseau que tu as utilisé pour UVEX-->IR?
Cdlt,
Ibrahima.
Search found 26 matches
- Wed Apr 08, 2020 12:39 pm
- Forum: UVEX Project
- Topic: UVEX --> UV
- Replies: 7
- Views: 6637
- Wed Feb 26, 2020 6:20 pm
- Forum: UVEX Project
- Topic: UVEX by Shelyak Instruments
- Replies: 5
- Views: 5108
Re: UVEX by Shelyak Instruments
Bonjour Olivier et merci pour l'information.
Ce modèle métallique sera-t-il compatible avec les composants optiques du projet UVEX initial (réseaux, lentille et miroirs)?
Cordialement,
Ibrahima.
Ce modèle métallique sera-t-il compatible avec les composants optiques du projet UVEX initial (réseaux, lentille et miroirs)?
Cordialement,
Ibrahima.
- Tue Jan 07, 2020 10:34 pm
- Forum: Spectroscopes and Softwares
- Topic: LHiResIII - Ne-calibration lines
- Replies: 17
- Views: 10623
Re: LHiResIII - Ne-calibration lines
Hi all. To Eric. Using FWHM of Ne Lines and PSF function of ISIS is a quick and easy way to focus the Camera on the doublet lens. I use this method almost each night (because I frequently change the grating), and most of the time, I obtain resolution around 14000 in H-alpha region with 2400 grating....
- Mon Dec 02, 2019 8:00 am
- Forum: UVEX Project
- Topic: UVEX Collimation
- Replies: 7
- Views: 7004
Re: UVEX Collimation
Dear Tom. What is the F/D of the telescope you use with your UVEX? Christian explains here http://www.astrosurf.com/buil/UVEX_project/ (section 5.3) that the size of the sharpness area decreases with the F/D number of the telescope. Your spectra looks in some aspects like that shown by Christian wit...
- Sun Nov 24, 2019 11:00 pm
- Forum: UVEX Project
- Topic: UVEX3 N2
- Replies: 50
- Views: 49256
Re: UVEX3 N2
Hi Tom. Thanks for the test and feedback. The results you obtain are very encouraging. I guess that you have used small exposure time for your measurements. Would the ADU excess limit (35 ADU in your test) be larger if you consider long exposure times (300 sec or 600 sec) as we usually do in spectro...
- Sat Nov 23, 2019 11:45 am
- Forum: UVEX Project
- Topic: UVEX 3 : PET-G Fibre de carbone
- Replies: 7
- Views: 6999
Re: UVEX 3 : PET-G Fibre de carbone
Bonjour. J'ai contacté un imprimeur 3D qui m'explique que la mention "PETG-carbone" désigne du PET-G chargé de poudre de carbone (ce qui est différent du PET-G chargé de fibre de carbone continue). Il m'explique aussi que la poudre de carbone n'a qu'un intérêt visuel par rapport au PET-G s...
- Sat Nov 23, 2019 10:55 am
- Forum: UVEX Project
- Topic: UVEX3 N2
- Replies: 50
- Views: 49256
Re: UVEX3 N2
I've just received my printed UVEX parts from a commercial 3D printing and fabrication house (using laser sintering in nylon PA12, which has much better properties than more common nylon 6). It's not a cheap method, but the parts are very, very rigid, with a nice smooth finish. I have difficulty be...
- Thu Nov 21, 2019 9:28 pm
- Forum: Spectroscopes and Softwares
- Topic: ISIS Anciennes versions
- Replies: 2
- Views: 2445
Re: ISIS Anciennes versions
Bonjour François.
Voici le lien vers les anciennes versions.
http://www.astrosurf.com/buil/isis/download/
Cdlt,
Ibrahima.
Voici le lien vers les anciennes versions.
http://www.astrosurf.com/buil/isis/download/
Cdlt,
Ibrahima.
- Wed Oct 09, 2019 7:59 pm
- Forum: Spectroscopes and Softwares
- Topic: Help Realigning Lhires III
- Replies: 2
- Views: 2487
Re: Help Realigning Lhires III
Dear Albert. I think your spectra is croped because the calibration lamp is not exactly in front of the slit. On the LHIRES I use, the lamp sometimes does not stay fixed in front of the slit (the button used to position the lamp is slightly defective). As a result, I obtain neon spectra similar to t...
- Thu May 23, 2019 9:27 pm
- Forum: Spectroscopes and Softwares
- Topic: About evaluation of instrument response
- Replies: 15
- Views: 10537
Re: About evaluation of instrument response
Bonjour Christian. Merci pour ton article très instructif. J'ai utilisé ta méthode pour corriger un spectre de v694 Mon que j'ai acquis en Mars 2019, avec un LHIRES3, un réseau à 150tr/mm et une ASI183MM Pro. Pour la réduction du spectre, j'avais initialement utilisé une étoile de référence proche e...