TX CVn

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TX CVn

Postby James Foster » Tue Feb 27, 2018 9:04 am

Got some spectra for this interesting symbiotic star in Ha, Hb (25Feb18), & CaK (26Feb18):
Image
Image
Image
This is a kinda dim object (Probably <9.2 magnitude) for the LhiresIII with the 2400 l/mm grating, so I applied a low-pass Gaussian filter for the spectra charts above; did
not apply it to the calibrated spectra. I used the nearby star HD085235 for my image response curve (IRC). The CaK band was especially difficult so I had to go over
3 hrs to exposure this with the 43 Cm aperture reflector working at a little over F/10. As usual, any elemental spectral lines besides the Balmer bands are speculative.

James
James R. Foster
Lhires III (2400 & 1800 ln/mm Grat) Spectroscope,
LISA Visual & IR Kit Spectroscope, and
Star Analyzer 200
James Foster
 
Posts: 223
Joined: Sun Jan 24, 2016 7:14 am

Re: TX CVn

Postby James Foster » Sat Mar 10, 2018 1:32 pm

Here is the latest spectrum of TX CVn in H-Alpha (HD085235 was used as the instrumental calibration star):
Image
Note sure if there is much change from the earlier one taken in February of this year.

James
James R. Foster
Lhires III (2400 & 1800 ln/mm Grat) Spectroscope,
LISA Visual & IR Kit Spectroscope, and
Star Analyzer 200
James Foster
 
Posts: 223
Joined: Sun Jan 24, 2016 7:14 am

Re: TX CVn

Postby James Foster » Mon Apr 02, 2018 7:24 pm

Here is a low resolution (LISA) spectra of TX CVn:
Image
Conditions were poor, but I was able to use HD085235 as a reference star for the instrument response. After installing a new (used) Atik 460ex, I had to re-tune
the LISA to make the Ar-Ne sharp and placed in the FOV as indicated in the LISA set-up instructions (Ha at x=1981). Hope to take some more images
when the weather clears.

James
James R. Foster
Lhires III (2400 & 1800 ln/mm Grat) Spectroscope,
LISA Visual & IR Kit Spectroscope, and
Star Analyzer 200
James Foster
 
Posts: 223
Joined: Sun Jan 24, 2016 7:14 am


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