[Aavso-photometry] J1255+266--70 Minute Stack

[Gary Walker]

Hello;

Just got 35 images, 120 sec exposures.? Twilight Flat Fielded from tonights Flats, Stacked and aligned them.? All V filtered, differential from the 170 as a comp.? Got the 168 at 16.888 with SNR of 130;? Got the 170 at 17.0 with SNR of 87; Got the 181 at 18.268 with SNR of 20.

Got J1255+266 at 19.3 with SNR of 11.? 

Shutting Down.? Have to get up at 5am tomorrow for a trip.? Good luck all.


Thanks

Clear Skies
Gary Walker
Maria Mitchell Observatory
4 Vestal Street
Nantucket, Mass 02554


-----Original Message-----
From: Gary Walker <bailyhill at aol.com>
To: bailyhill at aol.com; matthewt at aavso.org; aavso-photometry at mira.aavso.org; szkody at astro.washington.edu; arne at aavso.org; anjum at astro.washington.edu
Sent: Tue, 13 May 2008 9:26 pm
Subject: Re: J1255+266


Hello

Just got on the ref object at 9:17 pm EDT.? Looked at one 120 sec exposure.? Saw the 168 easily with sn of 6.? Did not detect subject--means its not brighter than 17 or so.? I have a time series going.? Will get 40 minutes of integration and stack them.? Keep you posted.


Thanks

Clear Skies
Gary Walker
Maria Mitchell Observatory
4 Vestal Street
Nantucket, Mass 02554


-----Original Message-----
From: Gary Walker <bailyhill at aol.com>
To: matthewt at aavso.org; aavso-photometry at mira.aavso.org; szkody at astro.washington.edu; arne at aavso.org
Sent: Tue, 6 May 2008 10:17 pm
Subject: J1255+266



Got 19.08 Vmag with SNR of 19.7 on this object.? Comps 17.0, 17.8 and 18.1 easy in stack of 20-3 min exp.? Limit of stack is 21.3 at SNR 3 and 20.8 at SNR of 5.? 

No outburst.? Observations 8:44 pm EDT to 9:53 EDT.? 

Exposing Alert 376--SDSS 151413.72+454911.9:?? Will do same 20-3 min exp.





Thanks

Clear Skies
Gary Walker
Maria Mitchell Observatory
4 Vestal Street
Nantucket, Mass 02554

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