spectro-aras.com

Jaroslav, here the spectrum of TYC 1371-60-1, from your your target list. The spectrum is taken by using a Newton 250 mm f/4 telescope and un Star'Ex spectrograph (3D printing setup) at the low resolution version (R=750) : http://www.astrosurf.com/buil/forum27/_tyc1371-60-1_20211130_023.png (no appa...

A very famous comet, Churyumov-Gerasimenki (67P), the Rosetta's comet, well placed on the northern sky. 2D views (Cote d'Azur sky pollution not removed) : http://www.astrosurf.com/buil/forum27/_comet_67P_2D_1_small.jpg http://www.astrosurf.com/buil/forum27/_comet_67P_2D_2_small.jpg The profile (UV C...

Another spectrum of southern star VY Scl from Antibes (2-hours exposure, Star'Ex spectrograph oil a 10-inch f/4 telescope): http://www.astrosurf.com/buil/forum27/_vyscl_20211008.png Also a spectrum of GK Per in actual outburst (it's the nova 1901): http://www.astrosurf.com/buil/forum27/_gkper_202110...

A coordinated observation with Olivier for an instructive comparison. The star VY Scl observed this time from France, but at the very low elevation of 14° above horizon (very strong absorption in the blue because of the air mass). I used a 8-inch Newton only and the Star'Ex spectrograph configured f...

Merci Benji !

Christian

The appearance of nova Cas 2021, the September 28, 2021 with a Newton 200 mm f/5 and the Star'Ex spectrograph operated in low resolution (R = 2200) - 24 x 40 s exposure: http://www.astrosurf.com/buil/forum27/_nova_cas_210928-1.png http://www.astrosurf.com/buil/forum27/_nova_cas_210928-2.png A descri...

Star'Ex can easily be transformed into a low resolution spectrograph (R = 2000-2500), see on this page in part 4.4: http://www.astrosurf.com/solex/sol-ex-stars-en.html See also this video which shows my equipment and some of my observational "secrets" (in French sorry): https://youtu.be/5n...

C'est très propre Pierre. Belle démo ! Actuellement je teste l'étalonnage permanent en haute résolution du coté de Halpha avec 4 lampes néon sur l'araignée du secondaire. Ca marche bien (j'ai un étalonnage à chaque image). Faut que je finisse d'intégrer le traitement dans SpecINTI (pour Star'Ex et a...

Je teste actuellement le spectrographe Star'Ex dans la configuration du kit optique 2 qui va être disponible en septembre prochain. Il s'agit d'une légère évolution du premier kit (meilleure correction chromatique, éléments pour fabriquer un système de guidage). Je rappelle que Star'Ex est une décli...

RS Oph at high resolution (R=26000) the August 19.828.(65 mm diameter refractor, Star'Ex spectrograph, slit 19 microns): http://www.astrosurf.com/buil/forum27/_rsoph_20210819_828.png RS Oph at very high resolution (R = 40000) the August 25.879 (65 mm diameter refractor, Star'Ex spectrograph, silt 10...