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Gabe: I am a member of the ALPO Solar Section so have some experience =
in solar observing and photography. I use a solar filter of 4" diameter =
over the front of my 12.5" reflector. During the daytime, seeing =
conditions rarely allow one to see details as small as 1 arc second. A =
4" aperture will, in theory, resolve to 1 arc second.
The cost for a smaller filter is obviously less, another factor to =
consider.
Brad Timerson
http://www.home.eznet.net/~bwtimer
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<DIV><FONT color=3D#000000 size=3D2>Gabe: I am a member of the =
ALPO Solar=20
Section so have some experience in solar observing and =
photography. I use=20
a solar filter of 4" diameter over the front of my 12.5"=20
reflector. During the daytime, seeing conditions rarely allow one =
to see=20
details as small as 1 arc second. A 4" aperture will, in =
theory,=20
resolve to 1 arc second.</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>The cost for a smaller filter is obviously less, =
another=20
factor to consider.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>Brad Timerson</FONT></DIV>
<DIV><FONT size=3D2><A=20
<DIV><FONT size=3D2></FONT><FONT color=3D#000000 size=3D2><A=20
href=3D"http://www.home.eznet.net/~bwtimer">http://www.home.eznet.net/~bw=
timer</A></FONT></DIV>
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