[Aavso-photometry] 2 arc-sec/pix

[arne]

mlfleenor at charter.net wrote:
> I apologize to Apogee for insinuating that they were advocating 2"/pix sampling. Upon closer reading ( you should be careful answering email during lunch ) they indicate halving the seeing to avoid undersampling. 
> 
> S&T however still has a reference see
> http://www.skyandtelescope.com/howto/astrophotography/3304356.html?c=y&showAll=y
> 
I love the delays on this maillist.
I'll talk to Dennis - this is a general article, and does say

"For example, conventional wisdom suggests that the astronomical seeing
conditions experienced by a typical backyard observer will produce excellent
deep-sky images with pixels that cover about 2 arcseconds (2") of sky."

which is a generic statement that does not get into the issue of
proper sampling.  He is also talking about *imaging* rather
than *photometry*, and for that, he is correct.  However, putting
such a statement in an article will make newcomers think that such
sampling is adequate for all observing.
Arne