Wolf Rayet stars

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Wolf Rayet stars

Postby Rainer Ehlert » Sat Dec 19, 2020 9:03 pm

Hi,

Finally found a workflow in order to get this elusive stars into the center of the slit of my LISA mounted on a TOA 130 @ 600 mm focal length and imaging with a QSI 520i B&W CCD camera.

All spectra are esposures of 300 seconds except HIP 3415 which is a stack of 20x 180 s and 7x 300 s exposures.

All fit images were processed in PixInsight using DARK and BIAS frames. Instrument response was applied in RSpec as a reference file which I developped acording to Christian Buil paper.

Calibration was done using a nearby type B7IIIp star (11 persei).

HIP12692_11Per_B7IIIp_60s_LISA_600mm-0010_C_CCHT2x0.25_DYB.jpg


Thanks for looking as well as comments are welcome in order to improve

Rainer

WR 1 type WN4B HIP 3415

HIP3415_WN4b_180s_300s_LISA_600mm-0007_0020_C_CC_HT3x0.25_DyB_img.jpg

HIP3415_WN4b_180s_300s_LISA_600mm-0007_0020_C_CC_HT3x0.25_DyB_Spectrum.jpg


WR 4 type WC5+? HIP 12527

HIP12527_WC5+_300s_LISA_600mm-0010_C_CCHT2x0.25_DYB_img.jpg

HIP12527_WC5+_300s_LISA_600mm-0010_C_CCHT2x0.25_DYB_spectrum.jpg


WR 5 type WC 6 HIP 13380

HIP13380_WR_WC6_300s_LISA_600mm-0010_C_CC_HT3x0.25_DYB_img.jpg

HIP13380_WR_WC6_300s_LISA_600mm-0010_C_CC_HT3x0.25_DYB_spectrum.jpg
regards Rainer____Observatorio Real de 14_____MÉXICO_____N 22° W 101°
Rainer Ehlert
 
Posts: 92
Joined: Thu Sep 29, 2011 9:36 pm

Re: Wolf Rayet stars

Postby Hamish Barker » Mon Dec 21, 2020 7:01 am

when the season permits, WR78 and 79 are very nicely close together and bright in the false comet cluster, in the tail of scorpio. I found them serendipitously when doing a spectroscopy demonstration at an outreach night, with a camera and SA100 and drift scaning to show spectral lines more easily. The bright blue line of (i think it was) WR79 was very obvious, then later I noticed there was a second WR star with emission lines in the same frame!
Hamish Barker
 
Posts: 99
Joined: Thu Jun 20, 2019 12:11 am

Re: Wolf Rayet stars

Postby Rainer Ehlert » Mon Dec 21, 2020 6:17 pm

Hamish Barker wrote:when the season permits, WR78 and 79 are very nicely close together and bright in the false comet cluster, in the tail of scorpio. I found them serendipitously when doing a spectroscopy demonstration at an outreach night, with a camera and SA100 and drift scaning to show spectral lines more easily. The bright blue line of (i think it was) WR79 was very obvious, then later I noticed there was a second WR star with emission lines in the same frame!



Hi Hamish,

Thanks for the info but my Sky is dead to the South. I have a neighbour with some Palm trees in his garden and I have lost the full south starting at the Celestial Equator downwards South ... :x :x :x

Rainer
regards Rainer____Observatorio Real de 14_____MÉXICO_____N 22° W 101°
Rainer Ehlert
 
Posts: 92
Joined: Thu Sep 29, 2011 9:36 pm


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