Delta Sco brightens mag V = 0.8

Information about outbursts of eruptive stars, Be activity, ...
Olivier GARDE
Posts: 1243
Joined: Thu Sep 29, 2011 6:35 am
Location: Rhône Alpes FRANCE
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Re: Delta Sco brightens mag V = 0.8

Post by Olivier GARDE »

Very small évolution for Del Sco since one year
Here's H alpha and H Beta profils taken with eShel spectrograph (corrected from Heliocentrique velocity)
Image

Image
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
James Foster
Posts: 439
Joined: Sun Jan 24, 2016 7:14 am

Re: Delta Sco brightens mag V = 0.8

Post by James Foster »

Here is my recent (29Apr17) spectrum of Be star delta SCO:
Image
Taken with the CDK17 reflector at F/6.8 and LISA spectroscope. The nearby F3V miles star HD150453 was used for IR correction (OBJCTRA= '16 42 11' / OBJCTDEC= '-19 51 08').
Numerous He lines appear and the spectrum shows the telluric O2 lines clearly on this low altitude object. Twenty 1-sec exposures were made to capture this very bright object!

James
James Foster
eShel2-Zwo ASI6200MM Pro
Lhires III (2400/1800/600 ln/mm Grat) Spectroscope
LISA IR/Visual Spectroscope (IR Configured)
Alpy 200/600 with Guide/Calibration modules and Photometric slit
Star Analyzer 200
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