Recurrent nova RS Oph brightened approximately 6.4 magnitudes on August 8th, 2021. Original found on plates by Williamina Flemming (who also discovered the Horsehead nebula) in 1904, RS Oph has now erupted nine times. I measured this one to be at magnitude 6.064V after capturing the RGB for this ‘pretty’ picture.
RGB – 12x60s – 12 minutes each – binned 2x2
36 minutes total exposure
Imaged August 9th, 2021 from Dark Sky New Mexico at Rancho Hidalgo (Animas, New Mexico) with a SBIG STF-8300M on an Astro-Tech AT12RCT at f/8 2432mm.
RGB - https://www.flickr.com/photos/dcrowson/51380936855/sizes/l/
Survey plate on the left and my image on the right - https://www.flickr.com/photos/dcrowson/51380160063/sizes/l/