Large amplitude QSO DA55 outburst?

Affiliation

American Association of Variable Star Observers (AAVSO)

Sun, 01/13/2013 - 09:51

I just glimpsed it at around v~16.7, the first time that I got a positive visual estimate since I started following this QSO/AGN. I have it noted as being the largest known amplitude QSO, so it may get brighter than 14th mag if it continues!

Mike LMK

MUY

Affiliation

Vereniging Voor Sterrenkunde, Werkgroep Veranderlijke Sterren (Belgium) (VVS)

Sun, 01/13/2013 - 18:12

DA55 = MisV1436

Indeed Mike, a very interesting one to follow : http://www.aerith.net/misao/variable/MisV1436.html

Eddy (MUY)

rmu

Affiliation

Madrid Astronomical Association M1 (Spain) (AAM)

Mon, 01/14/2013 - 14:12

DA 55 is at its bigest

DA 55 is at its bigest brightness in four years. It would be worth to keep an eye.

Thanks to Sonoita remote telescope and AAVSOnet I am able to do extensive ccd imaging, V filtered.

lmk

Affiliation

American Association of Variable Star Observers (AAVSO)

Sat, 02/02/2013 - 22:01

DA 55 continues to brighten

Visually estimated last night at 15.9 (mean value) with short term variations of a few tenths. I guess these rapid fluctuations are typical of the energetic QSO/relativistic jets?

LMK