[AZ-Observing] Re: Sun Spot

When observing sunspots, I notice that the longer one looks at the disk in a
given session, the more spots appear that can be counted. So you say "Gee, I
guess I just missed it the first time around..." 

This is due to at least 3 things:

Seeing gets better
It was in your blind spot
Sunspot forms while you are observing

I've seen extra ones appear even in the center of the disk and there's no
way I could have missed them the first few times I scanned the area. 

How long does it take anyway (in minutes) for a sunspot to form, i.e. go
from invisibility to sufficient size to see with a given aperture?

How large a spot can be obscured by the usual bad seeing that suddenly laxes
out?

I'm using 125X, 80 mm full aperture, Baader film filter. Please do not refer
me to some source, I just want to know if its a phenom you (solar observers
on this list) ever noticed, frequently or infrequently, and have to watch
out for.

Jack


> BIG SUNSPOT: There's a big spot on the sun today, sunspot 
> 564.  It first
> appeared only a few days ago, tiny and unremarkable. Since then it has
> grown wider than eight planet Earths.  The active region can be seen
> without a telescope--but never look directly at the sun.  Unfiltered
> sunlight can damage your eyes. Visit spaceweather.com for safe solar
> observing tips and a movie of the growing sunspot.
> 
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