Help with Alpy Calibration

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Re: Help with Alpy Calibration

Postby SteveCuthbert » Wed Oct 21, 2015 11:08 pm

Hi Paul/Keith
If its still of any interest this is a 120sec shot of a Relco starter bulb positioned at the objective end of my 120mm apo refractor. Isis seems to be fine using it for calibration.

calib120.png


uncalibrated
Relco bulb.png


regards
Steve
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Re: Help with Alpy Calibration

Postby Paul Luckas » Thu Oct 22, 2015 5:21 am

That's pretty much what I see too Steve (though my lamp is not positioned at the objective end). As Peter intimates though, there's not much at the blue end - and I'm curious to know if there's been much shared with respect to calibration lines since the Aply's release some years ago. I attempted to reconcile some of the smaller peaks at the blue end with on-line sources without much success - though despite that I'm now getting excellent correlation of the Balmer lines with published spectra using just 5 lines.

Paul
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Re: Help with Alpy Calibration

Postby SteveCuthbert » Thu Oct 22, 2015 4:18 pm

Hi Paul
I don`t have the Alpy calibration module and have never had any calibration issues with Isis just using one of those Relco bulbs at the end of my refractor. I did wonder if I would gain anything by having it at the ccd end although I have read an article describing using a tilt mirror setup fitted the wrong way round to use a calibration bulb at the eyepiece end!!. I just made a cap to go on the end of my scope with the bulb fitted in the centre and I just take a fresh single 120 sec shot each session which seems to do the job ok!.
Steve
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Re: Help with Alpy Calibration

Postby Robin Leadbeater » Fri Oct 23, 2015 9:58 am

Have you seen that Francois Cochard is running a student project on automatic calibration of LISA/ALPY using the calibration NeAr lamp (see posts on spectro-l)? He is calling for examples of lamp spectra from a range of spectrographs for practical tests. It might be interesting to see what that turns up. A single lamp in front of the scope produces very sharp lines as, being a point source with a very high f ratio, it is effectively free of any focus errors or aberrations in the spectrograph so probably makes line identification easier with less blending. If you put it at the edge of the aperture (The centre does not work with scopes with a central obstruction of course!) you have to be careful to align it with the slit though otherwise you get offsets.

Robin
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Re: Help with Alpy Calibration

Postby Benjamin Mauclaire » Tue May 10, 2016 4:24 pm

Message supprimé

Non conforme aux régles du Forum ARAS

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Re: Help with Alpy Calibration

Postby Benjamin Mauclaire » Wed May 25, 2016 10:14 pm

English follows

"régles" s'écrit règles :
http://www.larousse.fr/dictionnaires/francais/r%C3%A8gle/67653
D'ailleurs, ces règles ne sont publiées nul part.

De plus "Forum" signifie : réunion avec débat.
http://www.larousse.fr/dictionnaires/francais/forum/34709
Ici présent, tout débat est censuré.
L'absence de débat nuit à l'émergence des idées ainsi qu'à la démocratie.
A fortiori lorsque ce débat est fait sans offenser qui que ce soit.

-------------------------
"régles" is written règles:
[Url] http://www.larousse.fr/dictionnaires/fr ... 8gle/67653 [/ url]
Moreover, these rules are not published anywhere.

Moreover "Forum" means: meeting with debate.
[Url] http://www.larousse.fr/dictionnaires/fr ... orum/34709 [/ url]
Here, debate is censored.
The lack of debate night of the emergence of ideas as well as democracy.
A fortiori when the debate is done without offending anyone.

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Re: Help with Alpy Calibration

Postby admin » Wed Jun 08, 2016 10:21 am

Règle # 1 : pas de pseudonyme sur le forum
Ton user name est Benjamin Mauclaire

Il t'a été rapellé, à plusieurs reprises, que tu avais toute latitude pour promouvoir ton logiciel dans la rubrique Spectroscopes et Softwares en ouvrantr autant de sujets que tu le souhaites

En revanche, il ne t'est pas permis d'intervenir dans un sujet traitant d'un autre logiciel en émettant des critiques directes ou indirectes et/ou en faisant de la retappe pour ton logiciel
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