The FSRQ B2 1308+326: reaching the new absolute maximum and still brightening
ATel #15893; V. V. Vlasyuk, O. I. Spiridonova, O. A. Maslennikova, A. S. Moskvitin (Special Astrophysical Observatory of the Rus. Ac. Sci.)
on 9 Feb 2023; 08:24 UT
Credential Certification: Alexander Moskvitin (mosk@sao.ru)
Subjects: Optical, Quasar
Our team had begun regular optical BVR-bands monitoring for the flat spectrum radio quasar Ton 0599 just after message of German astronomers (ATel #15870). We are presenting here the preliminary data obtained with SAO RAS 1-m optical telescope equipped with CCD photometer, as was described earlier. More complete data including results of intraday variations studies from SAO RAS 0.5-meter telescope are now in preparation.
Our data, taken with 1-m Zeiss-1000 reflector at nights January, 26-31, gave next mean values:
| MJD | Rmag | Error,mags |
| 59971.004 | 13.372 | 0.002 |
| 59971.9075 | 13.647 | 0.003 |
| 59974.1050 | 13.660 | 0.007 |
| 59975.0150 | 13.845 | 0.005 |
| 59975.0710 | 13.870 | 0.004 |
| 59976.0975 | 13.757 | 0.004 |
As comparison stars the objects 1-4 from Raiteri et al (1998, A&A SS, 130, 495) were used. More accurate reduction is necessary. We strongly encourage further multi-wavelength coverage.
