Re: RS Oph in outburst

Robert Pitt

Very interesting! How long does the outburst “last” before dimming?


Robert Pitt, P.E., Ph.D. BCEE, D.WRE

Emeritus Cudworth Professor of Urban Water Systems

Department of Civil, Construction, and Environmental Engineering

The University of Alabama

Rpittal at charter dot net


From: <> On Behalf Of Myron Wasiuta
Sent: Friday, August 13, 2021 9:03 PM
To:; novac@...; Bart Billard <bbillard@...>; Linda Billard <lbillard@...>; Glenn Faini <gfaini@...>; Jerry Hubbell <jhubbell@...>; Lauren Lennon <llennon@...>; Shannon Morgan <smorgan@...>;
Subject: [bas-astro] RS Oph in outburst



Battling blood-sucking swarms of mosquitoes and sauna-like humidity, I managed to get an image of RS Oph in outburst last night as well as a spectra. For this image I combined 10 60-sec exposures made using photometric B,V, and R filters, then treated those images as RGB. The pink H-Alpha emission is evident in the color of the star.The telescope I used  is a 10-inch RC with QHY 174 GPS camera at 1980mm fl ( our MSRO Station 2 telescope) which gives 0.6arc-sec/pixel. I estimated visual magnitude to be close to 6.0. Its last outburst was in 2/2006,and the one before that was in 1985. These recurrent novae are among the rarest of stars in our galaxy-only 9 other are known ( T Pyx and T CrB are the most famous of these remaining nine).

Dr. Myron E. Wasiuta
President, MSRO Science, Inc
Director, Mark Slade Remote Observatory
Wilderness, VA USA

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