Tonight is cloudy here where i live, so im here at cloudy nights . I planned to go outside and find M13 with binoculars first and then go with the dob but i think ill have to wait for another night
i was out last night with a pair of 12x50's, observing what effects the layers of wildfire smoke are having. I've been doing that for the past couple of weeks when it's not cloudy. I was in a smoke "red zone" per Astrospheric. My SQM-L readings at zenith averaged 20.34 mpsas, which indicated to me that the smoke was having a significant impact on sky brightness. It was about 1am EST, no moon yet. I could see M13, using averted vision helped.
I know there is alot of smoke, smog etc over Mexico City, which is surely adding to the challenge. Keep trying, one of these nights you'll bag it. In the meantime you'll be accumulating experience which only comes one way, by doing