[vsnet-alert 16642] Re: Historical optical maximum of BL Lacertae

[Miguel Rodríguez]

My observations assure this. I've recorded an increment more than 0.5 magV, in 24h:
 
OBS: Miguel Rodriguez Marco
TEL: 0.20-m f/8 Ritchey-Chretien + CCD
CCD: QHY9 KAF-8300 Bessell-Cousins BVRI filters
VPhot 3.1
AAVSO
OBJECT  DATE           MAG     +/-   OBS  CAT
------  -------------  -----   ----  ---  -------------
LacBL  20131122.9300  13.29V  0.15  Mro  AAVSO  8617MLC
LacBL  20131123.9337  12.85V  0.13  Mro  AAVSO  8617MLC



----- Mensaje original -----
> De: FIDRICH Robert (Fidusz) <fidusz at zpok.hu>
> Para: baavss-alert at yahoogroups.com; vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp
> CC: 
> Enviado: Lunes 25 de noviembre de 2013 10:03
> Asunto: [vsnet-alert 16641] Historical optical maximum of BL Lacertae
> 
> Historical optical maximum of BL Lacertae
> 
> ATel #5597; V. M. Larionov et al.
> 
> We report on optical observations of BL Lacertae carried out at the
> Crimean and St.-Petersburg observatories in the framework of the GASP-WEBT
> collaboration.
> 
> Starting from early 2013, when the source was observed at its historical
> minimum levels (R about 15.2), BL Lacertae has shown an almost continuous
> brightening until November 23.9, when it reached R = 12.34. This is the
> maximum optical brightness level ever detected, a bit higher than that
> observed during the 1997 outburst (see e.g. Villata et al. 2004, A&A, 421,
> 103).
> 
> http://www.astronomerstelegram.org/?read=5597
> 
> Clear skies,
> 
> -- 
> FIDRICH Robert (Fidusz)
> HAA/VSS
> drotlevel/email: fidusz at zpok.hu
> #jabber/gtalk: fidusz at jabber.hu
>