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Hi Olivier, merci beaucoup pour votre réponse. Je lda vois seulement maintenant. S'il vous plaît, est-ce que tu peux prendre une spectre à 20sec de vega? Et puis dis moi quel télescope t'utiluses et j'ai besoin du 2D spectre. So I can compare my equipment.....with yours. I use a KAF 3200 with 1x1 bi...

Hello Olivier,

I have additionally problems with the flux . Is it depending from the angel alpha of the grating? I have had in earlier times more flux in the past. Could you say anything to this problem please?

Amicalement
Berthold

Bonjour Olivier, I asked meanwhile Martin Dubs and THIS problem is solved. The def_order.lst was'nt with the numbers of new orders quite ok. And I learnt meanwhile that the tungsten flats are an additional problem...... Another question: if I use the 50µ fiber directly on the calibration unit (tungs...

Hi, I have the new colli for the eShel. They from shelyak told me, I can carry on as before after changing the colli, but the merging process to *full.fit will not run with ISIS. If I select the orders from 33 to 50, everything runs good as before. But if I select orders 33 to 53 the merging process...

Hello,

I am new here. I am a doctor. I use a fiberlinked eShel with a C14 Installed in a Baader dome.

cheers berthold