spectro-aras.com

Hi,

I am a bit late but just got a 3D printer and might be interested in building an UVEX spectrograph.

Where can I purchase the optical parts for the UVEX ?

Thanks and regards Rainer

Hi,

Yesterday I was able to shot another series of RS Oph. Below the comparison of August 10, 12 and 15.

Hi, Having read a lot about RS Oph I told myself maybe I try it. Maybe, because to the South my neighbour has a Palm tree and that one covers up the whole South :cry: OK, I was lucky to get RS Oph between two branches :mrgreen: I took some images on August 10 as well as on August 12. See attached im...

Hallo Ulrich,

You will get an email from eastpier@.....com so it does not land in your SPAM folder

Grüße Rainer

Hi Ulrich, I was able to shot 13 images each 600 seconds but the last one were already quite low over the Horizon. Below the graph. I labeled where the spectra has its lowest point. Also attached a fit file for your inspection. I just found out the forum does no accept the file type *.fit for upload...

Hi Robin, Thsnk. Will do. BTW I have now a starter lamp integrated in the telescope cover and with this I can shoot calibration frames in every position. The same lamp was calibrated many years ago by Richard Walker when in some forum there was a opinion exchange about this starter lamps. In Europe ...

Thus my next question to the community (and to Uwe Zurmuehl and Rainer in particular): What's the precision (and calibration reliability) of radial-velocity (RV) measurements that you can get out of your spectra? Potentially, the RV of the giant might vary by more than 100 km/s over the next 8 days...

Hi Ulrich, I managed to get TYC 1799-1159-1 yesterday night and made 15 images each 450s and processed the outcome into a spectrum. I tried to calibrate the spectra with the instrument response curve I have. Nor perfect but trying to learn more and more with time. Just started again with Spectroscop...

Hi Rainer, Yes, the link indicated above is valid to register, so you have to click on https://old.framadate.org/6tZKbHRIIsExTKYE And put your e-mail address (not your name) to receive the link for the workshop. the link will be sent by email on Friday 15th Thank you. I already registered but was n...

english version below : A workshop on the Nova Per 2020 will be led by François Teyssier on Saturday January 16th, 2021 at 18h UTC here's the program : https://www.shelyak.com/wp-content/uploads/Newsletter-2020-4-VGB.pdf and for registration : https://old.framadate.org/6tZKbHRIIsExTKYE Hi, Where th...