TNS Classification Report No. 14555 [ 2023TNSCR.605....1B ]
Date Received (UTC): 2023-03-22 23:23:18 Sender: Hamish Barker
Group: None
Hamish Barker report/s a classification of object: AT 2023dex
Type: Other
Remarks: Halpha emission (FWHM 12.4Angstrom, peak 2x of continuum). Other than Halpha emission, after dereddening for E(BP-RP) mag)= 0.8740 ( as listed under GAIA DR2 for target coordinates ) spectrum appears otherwise consistent with Spectral type OB- as listed for object SIMBAD CD-58 5823, 0.17 arcsec from target coordinates.
The following Classification spectrum was provided:
Obsdate: 2023-03-22 10:23:31
Instrument: Other
Telescope: Other
Remarks: Spectrum taken with 250mm Newtonian, Harrison L200 Littrow spectrograph with 180lpmm grating, Atik 383L+ camera. R= 500 (approx).
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2023dex
Date Received (UTC): 2023-03-22 23:23:18 Sender: Hamish Barker
Group: None
Hamish Barker report/s a classification of object: AT 2023dex
Type: Other
Remarks: Halpha emission (FWHM 12.4Angstrom, peak 2x of continuum). Other than Halpha emission, after dereddening for E(BP-RP) mag)= 0.8740 ( as listed under GAIA DR2 for target coordinates ) spectrum appears otherwise consistent with Spectral type OB- as listed for object SIMBAD CD-58 5823, 0.17 arcsec from target coordinates.
The following Classification spectrum was provided:
Obsdate: 2023-03-22 10:23:31
Instrument: Other
Telescope: Other
Remarks: Spectrum taken with 250mm Newtonian, Harrison L200 Littrow spectrograph with 180lpmm grating, Atik 383L+ camera. R= 500 (approx).
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2023dex