Single or multi hole off-axis filters?

The original plan was to turn my three-hole Kendrick Kwik Focus into a solar
filter. I was going to put filter material over all three holes, but it
seems like most people say that will give a degraded image over just using
one of the holes. I'll see what light my moon experimentation will shed,
and if it validates what the people are saying.

Jeff
http://www.mindspring.com/~jeffpo


"Jon Isaacs" wrote in message
...




Although multiple holes might not yield "better results" over a single
hole,
my main concern was a degradation in the image. The plus side was going
to
be brighter images or shorter exposure times, but I didn't want that at
the
expense of image quality.

I plan on doing some experimenting on the moon when it comes back around
(and I have clear skies). I'll see if I can actually tell a difference
in
quality of the image with one hole versus three.

It seems to me that the real comparison should first be whether the mask
improves or degrades the image. A mask of any sort certainly lengthens
the
exposure times and reduces the possible resolution, or so it seems.

jon