(cba:news) stars for May-June
jop at astro.columbia.edu
Tue May 18 09:44:28 EDT 2021
Pardon my long silence. I'm teaching every day now, with 50% in-class
students and 50% remote. Really impossible to serve both audiences
simultaneously! So research time is limited. Nevertheless...
On clear nights, we still need to keep the pressure up on AM CVn -
taking it all the way to ~2 airmasses. The 1011 s signal (the negative
superhump) went faint on us a few weeks ago... and it take a lot of
effort to measure the phase of a signal which is down to 0.002 mag. Yet
that's what the PHYSICS question (the relation to the positive
CI Aql is another super choice - both hemispheres, and for at least the
next two months.
Recent novae: V1974 Cyg, V4743 Sgr, and V1494 Aql
OV Boo. Paper just about ready to go. A couple more eclipses would be
great. 19th mag, only suitable for big scopers.
Nova Sco 1437. Really beguiling light curve!
And some IPs (Enrique might want to add/subtract among these): V2306
Cyg, V1223 Sgr, AO Psc
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