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Hello, we send our spectrum of the MAXI J1820+70. This spectrum is taken on 2018-07-07.0907. The spectrum is a sum of 6 x 900 sec images with a Celesctron C14 f/11 + LHires III + 150 l/mm + CCD SBIG ST7XME at the Osservatorio Astronomico Margherita Hack, Firenze (OAMH). We hope this spectrum will be...

Hi to all. Here is our animation of CH Cygni H alpha line rocorded at the night of 02 Aug 2015 over 2 hours. Instumentation: Meade SC 10"f/10 + Lhires III 1200 l/mm + CCD SBIG ST10XME Time of single exposition: 600 min CHCyg_anim.gif Clear sky Nico Montigiani Massimiliano Mannucci Lapo Ferrini ...

Hi to all.
This is our AG Dra spectrum center on the Raman lines.
Nico
Associazione Astrofili Fiorentini

Thank you Olivier for your explanation.
Now we understand why the star is not in the BeSS database.
There is another database for this type of stars?

This star was already known as a star emitting?

Regards
Nico Montigiani

Guys, this night during our usual observing session we have recorded 3 spectra of the star HD194153 using the 150 l/mm grating. In SIMBAD this star is classified as B1Iab. As you can see in our spectrum here attached there is a faint but well visible H alfa emission. HD194153_20140916_AAF.JPG HD1941...

Fantastic.
Thank you Francois and Coralie.
This is a great stisfaction for us and our association A.A.F.

Nico Montigiani

Nothing new about the absence of V1466 Aql from the Bess database?

Hi to all,
here you can see another spectrum of the star V1466 Aql
The spectrum was taken last night.
Clear Skies
Nico

Thank you François,
We hope that the observation of V1466 Aql is interesting.
Maybe it's "the beginner's luck".
We hope to soon have some other observations to show to the forum.

Clear skies

Nico Montigiani

Hi,
Thank you Robin for your informations.
Thank you Paolo for your spectrum which confirms our observations.

I hope someone knows how to give us any other information about the lack in Bess database.