Open Access
Table B.1.
Log of spectroscopic observations of SN 2017ati.
| Date | MJD | Phasea | Telescope+Instrument | Grism/Grating+Slit | Spectral range | Resolution | Exp.time |
|---|---|---|---|---|---|---|---|
| [days] | [Å] | [Å] | [s] | ||||
| 2017-02-27 | 57811.8 | +27.3 | Copernico1.82m+AFOSC | GR04+1.69" | 3430 − 8110 | 13.7 | 1800 |
| 2017-03-09 | 57826.0 | +41.5 | NOT+ALFOSC | gm4+1.3" | 3300 − 8860 | 17.7 | 1800 |
| 2017-03-17 | 57829.8 | +45.3 | Copernico1.82m+AFOSC | VPH7+1.69" | 3600 − 9150 | 14.6 | 1800 |
| 2017-03-25 | 57837.0 | +52.5 | Copernico1.82m+AFOSC | VPH6+1.69" | 3670 − 9150 | 14.4 | 1800 |
| 2017-03-28 | 57840.0 | +55.5 | Copernico1.82m+AFOSC | VPH7+1.69" | 3600 − 9140 | 15.1 | 2400 |
| 2017-04-06 | 57849.1 | +64.6 | NOT+ALFOSC | gm4+1.3" | 3560 − 9500 | 17.7 | 1800 |
| 2017-04-21 | 57864.9 | +80.4 | NOT+ALFOSC | gm4+1.0" | 3650 − 9400 | 13.7 | 1250 |
| 2017-05-08 | 57881.9 | +97.4 | NOT+ALFOSC | gm4+1.3" | 3800 − 9500 | 17.9 | 1800 |
| 2017-05-30 | 57903.9 | +119.4 | NOT+ALFOSC | gm4+1.0" | 3660 − 9540 | 13.9 | 1800 |
| 2017-06-28 | 57932.9 | +148.4 | NOT+ALFOSC | gm4+1.0" | 3640 − 9540 | 14.0 | 3200 |
Notes. a Phases are calculated relative to the explosion epoch (MJD = 57784.5) in the reference frame of the observer.
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