One of the fun things about observing variable stars is that some star or another is always doing something a little out of the ordinary. AF Cyg is a semi-regular variable that has recently decided to have a larger amplitude than it has had for some years. The plot is the past 2000 days of visual observations from the AAVSO. It will be fun to see whether the greater amplitude persists.
Posted 09 July 2019 - 10:15 AM
Thank you for this interesting post!
I will make some estimations soon.
Posted 09 July 2019 - 11:01 AM
Here is 6000 days (about) going back
when I did have AF Cyg in my programme (blue crosses).
Instrumental magnitudes in V (green dots) nicely confirm visual.
In my opinion AF Cyg is highly irregular but one never knows
what happen next........
- Aquarellia, smithrrlyr and PartlyCloudy like this