Search found 1449 matches
- Mon Apr 19, 2021 5:34 pm
- Forum: Novae
- Topic: Alert! Nova Cas 2021 mag 9
- Replies: 128
- Views: 141421
Re: Alert! Nova Cas 2021 mag 9
A Star'Ex spectrum taken the April 19.122 (I use here a 200 mm Newton stopped to 125 mm diameter and an experimental Star'Ex version (use special optical glass): http://www.astrosurf.com/buil/forum26/_novaCas2021_20210419_122_1.png A high contrast version: http://www.astrosurf.com/buil/forum26/_nova...
- Fri Apr 09, 2021 11:41 pm
- Forum: Novae
- Topic: Alert! Nova Cas 2021 mag 9
- Replies: 128
- Views: 141421
Re: Alert! Nova Cas 2021 mag 9
An blue-UV spectrum taken by using UVEX spectrograph on a 200 mm Newton stopped at 125 mm diameter (April 8): http://www.astrosurf.com/buil/forum26/_nova_Cas2021_20210408_048.png A visible spectral range spectrum captured by using Star'Ex spectrograph and a 200-mm Newton (April 9): http://www.astros...
- Fri Apr 02, 2021 11:33 pm
- Forum: Novae
- Topic: Alert! Nova Cas 2021 mag 9
- Replies: 128
- Views: 141421
Re: Alert! Nova Cas 2021 mag 9
A "far" IR spectrum taken by using Star'Ex + 300 lines/mm grating blazed at wavelength 1 micron + ASI294MM camera : http://www.astrosurf.com/buil/forum26/_novacas_2021_20210402_061.png The Pashen line # 8 in emission at 10049 A is easily now detected. For the fun, the Vega spectrum up to P...
- Wed Mar 31, 2021 3:10 am
- Forum: Novae
- Topic: Alert! Nova Cas 2021 mag 9
- Replies: 128
- Views: 141421
Re: Alert! Nova Cas 2021 mag 9
Visible part of the spectrum for Mach 29.138 (Star'Ex 600 lines/mm spectrograph + Newton 200 mm): http://www.astrosurf.com/buil/forum26/_novacas2021_20210329_138_1.png http://www.astrosurf.com/buil/forum26/_novacas2021_20210329_138_2.png Red and infrared spectrum for March 30.120 (Star'Ex 600 lines/...
- Thu Mar 25, 2021 4:11 am
- Forum: Novae
- Topic: Alert! Nova Cas 2021 mag 9
- Replies: 128
- Views: 141421
Re: Alert! Nova Cas 2021 mag 9
A near-IR spectrum (25-March-2021) - Pashen series is in emission:
Christian Buil
Christian Buil
- Tue Mar 23, 2021 11:50 pm
- Forum: Novae
- Topic: Alert! Nova Cas 2021 mag 9
- Replies: 128
- Views: 141421
Re: Alert! Nova Cas 2021 mag 9
New processing of Star'Ex spectrum for the 23 March (the near-IR 7065A He is now visible):
Christian Buil
Christian Buil
- Tue Mar 23, 2021 3:11 pm
- Forum: Novae
- Topic: Alert! Nova Cas 2021 mag 9
- Replies: 128
- Views: 141421
Re: Alert! Nova Cas 2021 mag 9
A spectrum for the 23-March-2021 taken by using a Star'Ex spectrograph (600 l/mm grating + 23 microns slit) on a 8-inch Newton telescope. The exposure is 12 x 300 seconds : http://www.astrosurf.com/buil/forum26/_novacas2021_20210323_144_1.png A more contrasted display: http://www.astrosurf.com/buil/...
- Thu Jan 21, 2021 4:17 pm
- Forum: Sol'Ex/Star'Ex
- Topic: Démarrage du projet Sol'Ex
- Replies: 14
- Views: 14594
Démarrage du projet Sol'Ex
Sol'Ex (pour Solar Explorer) est un petit instrument que j'ai conçu avec l'idée d''être réalisé en impression 3D et avec un minimum de moyens dans le but d'observer l'atmosphère solaire dans la raie de l'Hydrogène, mais aussi toute autre raie de votre choix. Comme il se doit ici, il s'agit d'un spec...
- Tue Dec 15, 2020 2:02 pm
- Forum: Spectroscopes and Softwares
- Topic: Sol'EX : a low cost instrument for solar observations
- Replies: 16
- Views: 10444
Re: Sol'EX : a low cost instrument for solar observations
Une image dans le raie D1 du sodium (l'émission dans la chromosphère est très faible) : http://www.astrosurf.com/buil/forum26/_demo_D1.jpg La différence de brillance du disque entre la droite et la gauche vient de l'effet Doppler vient probablement de la rotation du Soleil sur son axe (un bord s'app...
- Tue Dec 15, 2020 1:39 pm
- Forum: Novae
- Topic: TCP J04291884+4354232 possible nova mag 10.2
- Replies: 146
- Views: 85521
Re: TCP J04291884+4354232 possible nova mag 10.2
A spectrum taken the Dec. 13, by using a very small refractor, a Takahashi FS60 (60 mm diameter) and the Sol'EX spectrograph (1200 lines/mm grating + 10 microns slit) + 4 x 900 seconds exposure: http://www.astrosurf.com/buil/forum26/_novaper2020_20201213_828.png The resolution is R=3200 by using the...