when to harvest , my 1st grow

Is there any way to tell without a microscope? i know ive asked this and I heard you can, but I'm in the same boat I dont want to miss that window but it seems like its taking forever. From wat i can see the trichomes look really white so I dont see why u wudnt be able to just eye it

I dont think the window is really that small,when u think its done wait like a month later,trust me its much more rewarding to harvest late than early,i chopped mine prolly later than most people would leave em and the smoke is sublime.