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Sorry if this topic has been discussed before. I'm trying to get clued up a bit more on predicting conditions in advance of a shoot and though I have some specific questions, I thought this might be a good place for a bit of general Q&A on the topic.
Anyway, to kick us off. I went out the other night to shoot the milky way. All my apps were telling me things would be perfect. Milky way should have arched nicely over my subject to the North. Clearoutside app was telling me that Sky was to be free of cloud at all heights at the time I was going to be shooting (3am, ouch!) and a new moon meant no moonlight to ruin the party.
But what I actually got was a fair bit of low cloud in my shots with stars visible above that. I realise now that this is likely because, although it was clear where I was and directly overhead, I hadn't really considered how far north I would need the sky to remain cloud free and clearly it wasn't.
So first question from me is really just how far away from my locations I should be looking at in terms of cloud cover? And does it depend on what height the cloud is at, I assume it must do when considering angle of view but I don't know. Although this occasion was astro stuff, I guess it's even more relevant when predicting sunsets and sunrise.
I have another question about dew points but that can wait!
Anyway, to kick us off. I went out the other night to shoot the milky way. All my apps were telling me things would be perfect. Milky way should have arched nicely over my subject to the North. Clearoutside app was telling me that Sky was to be free of cloud at all heights at the time I was going to be shooting (3am, ouch!) and a new moon meant no moonlight to ruin the party.
But what I actually got was a fair bit of low cloud in my shots with stars visible above that. I realise now that this is likely because, although it was clear where I was and directly overhead, I hadn't really considered how far north I would need the sky to remain cloud free and clearly it wasn't.
So first question from me is really just how far away from my locations I should be looking at in terms of cloud cover? And does it depend on what height the cloud is at, I assume it must do when considering angle of view but I don't know. Although this occasion was astro stuff, I guess it's even more relevant when predicting sunsets and sunrise.
I have another question about dew points but that can wait!