neon

The LhiresIII spectrograph has a built-in neon lamp for calibrating stellar spectrum. Taking one neon spectra before and after stellar exposition is highly recommended in high resolution spectrography cause of the mechanical instability of this "at telescope focus" slit spectrograph. Here is an illustration of the mechanical effect on the shift of the band pass of the neon spectrum.   " Dérive de la bande passante du LhiresIII sur un spectre du néon avec en haut une rotation de 180° en Dec, en bas une rotation de 90° en Ra... [Lire la suite]

Comparaison entre les poses unitaires brutes, les spectre 1D et neon. Comparaison between raw spectrum , 1D spectra and neon, LhiresIII, Atik314L+, Binning 2X2, slit 35µm, R=15000 960s exposure Raw spectra, and 1D spectra (Name, AD, Dec, Mv, Spectral tyoe, VsinI)   1 HD 127617 14 31 59.56 18 46 00.74 8.73 B5e 120 NEW MAGNITUDE RECORD 1 z Her 17 50 03.33 48 23 38.95 6.76 Bpshe 159 1 tet CrB 15 32 55.78 31 21 32.88 4.153 B6Vnne 340 1 53 Boo 15 31... [Lire la suite]