From jop at astro.columbia.edu  Thu May  9 10:35:32 2019
From: jop at astro.columbia.edu (Joe Patterson)
Date: Thu, 9 May 2019 10:35:32 -0400
Subject: (cba:news) Maxie = ASASSN-18ey... back where it came from
Message-ID: <7cabd901-5350-7978-eb93-63f1012881a5@astro.columbia.edu>

Hi CBAers,

Recent light curves suggest that the star has approached its (likely) 
quiescence around 17.7-18.0.  This makes it an increasingly good target 
for finding the actual orbital period - still under the assumption that 
the not-quite-stable 0.7 day period of 2018 was a superhump (very likely 
but not 100% obvious).

So promote that star on your priority list.  Unfortunately, the usual 
admonition "follow it throughout the night, from tree to tree" doesn't 
apply here - because with such an awkwardly long period, it's easy to 
get snakebit by extinction effects.  Our usual advice of airmass < 2.0 
applies... and apart from that, your general quality-of-night opinions 
are important too.

I don't have general advice about V versus "wide-V".  Obviously V is 
better if you can survive the low count rate - but it's a very big price 
to pay with a small scope at 18th mag!

joe

Don't forget HP Lib and CR Boo, as well.

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From jp42 at columbia.edu  Mon May 20 10:53:10 2019
From: jp42 at columbia.edu (Joe Patterson)
Date: Mon, 20 May 2019 10:53:10 -0400
Subject: (cba:news) Fwd: (cba:chat) CR Boo at mag 17
In-Reply-To: <CANSMr_K1MX1w2X_88MRDbJRtbYXmeva1YKxBpgA3ycgXTxALSg@mail.gmail.com>
References: <CANSMr_K1MX1w2X_88MRDbJRtbYXmeva1YKxBpgA3ycgXTxALSg@mail.gmail.com>
Message-ID: <34fb3d1e-74bf-36a0-c0eb-1aa31b37ca6a@columbia.edu>

Hi CBAers,

It has been a faint year for CR Boo, with a few dips to magnitude 17.? 
They've been very transient, very likely not long enough to get a 
sensitive detection of the true orbital period. But hope springs eternal 
- it greatly deserves your attention if it stays faint!

joe



-------- Forwarded Message --------
Subject: 	(cba:chat) CR Boo at mag 17
Date: 	Mon, 20 May 2019 09:03:36 -0500
From: 	Joe Ulowetz <joe700a at gmail.com>
Reply-To: 	cba-chat at cbastro.org
To: 	cba-chat at cbastro.org



Hi,
In the past there was a request to notify everyone if CR Boo went as 
faint as mag 17. I don't know if there is still that level of interest 
in it, but I measured it at mag 17 last night in a short run before 
clouds came in.? It has been about mag 16 - 16.5 for the past week.

Thanks,
-Joe U.

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