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Large amplitude QSO DA55 outburst?

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lmk's picture
Large amplitude QSO DA55 outburst?

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's picture
DA55 = MisV1436

Indeed Mike, a very interesting one to follow :

Eddy (MUY)

rmu's picture
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's picture
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?


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