7timer question

[benjii]

On 7timer, there's the blue to grey circle for astronomical seeing. My question is, what is that based on? I've got a few clear nights in a row with 0% cloud, however, astronomical seeing is the first grey circle. What sort of effect is that going to have?

[benjii]

Anyone? Trying to debate whether or not I should go to my dark site tonight or tomorrow.

[c3po]

hi bejii, i've had differing experiences wit 7Timer, on occasion its spot on, but many other times it's said the seeing is at 'best' (the small grey circle) and it's been hazy and/or poor seeing outside...

i tend to compare what 7Timer saud with the likes of other sites like MeteoBlue "sky" forecast as it provides a lot more detailed info regards sky clarity and seeing - in actual fact, i usually rely more on that site than i do 7Timer.