SN 2017eaw
In the astROmania 2017 camp, I didn’t really care about the nowadays visible supernova in the Fireworks Galaxy. I just tried (and ultimately failed) to collect enough photos for a beautiful picture. However, when I came home and started typing these articles, I realized I have an old post about this galaxy. Back in 2013 my Newton scope + DSLR setup was only a few days old (EQ3 mount, no MPCC, unmodded camera, shot in JPG, unmodded tube), so those pictures qualify as first lights. I also remembered that, due to human error, those pictures might be lost forever, having only the placeholders even in the wayback machine version of the old website that article used to be on, and not the actual pictures. I am lucky (cursed actually), cause I turned out to have a backup of a backup in a very obscure folder of an obscure drive I have actually forgotten about. Noteworthy that other than being my own data, those pictures have close to zero value.
Back in 2013 I had only read about C 12, NGC 6946 [galaxy in Cep] Fireworks Galaxy, Tűzijáték-galaxis 9.1m ø11.5′ [wiki] [simbad] 750mm, 1200mm and the pictures were sort of a surprise. That there actually is something on those pictures other than startrails.
So today, having the SN 2017eaw evidently visible in the galaxy, and on my picture, it occurred to me to combine the old and the new data. It was a timetravel experience and a real adventure :)
2013-06-15 C12, raw image, heavy light pollution
as enhanced as… uhm, so there is the galaxy
2017-08-18 C12, raw image
C12 Fireworks Galaxy and NGC 6939, 3x5min
the 2013 image aligned, no new star
the 2013 picture (light) with the 2017 colors to enhance the galaxy
the 2013 image, further enhanced with some 2017 data
the 2017 image
2013: no supernova at the marked place
2017, the supernova marked
2013+2017 with some transparency, supernova marked
2013-2017 blinking
