Thanks for the info. It's been a very long time since I used welder's
glass, and I'd forgotten that different grades were available.
At 11:27 PM -0400 5/29/12, Michael Beacom wrote:
Check out this page for some safety notes when using welding filters:
http://www.transitofvenus.org/faq/354-can-i-use-welding-glass-to-view-the-sun
I'm going to take my telescope to work, and try some solar
photography (with a Baader solar film filter for the telescope) this
week, for a bit of practice.
Cheers
Mike
On May 29, 2012, at 10:02 PM, Steve Sharpe wrote:
At 11:32 AM -0700 5/29/12, John Celio wrote:
I want to try photographing the transit of Venus across the sun on
June 5th, but I've never tried shooting the sun before. Any of you
guys have tips you can share? Is there a special filter I should use,
or would a polarizer or ND filter be sufficient? I'm planning on using
my K 500mm f4.5, so I'll probably need to special order a large enough
filter, and I'll need to do that soon.
Try taping a piece of welder's glass over the front of the lens.
However, 500mm may not be enough to see much.
I've got a home made solar filter that I made decades ago out of a
mylar emergency blanket folded several times over. It goes on the
front of my Celestron 5 telescope. The C5 has a 1250mm focal length
so I get a nice, big image of the Sun.
However, I'm expecting to be clouded out...again. It's that time
of year, here in Nova Scotia.
--
Steve Sharpe
[email protected]
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http://earth.delith.com/photo_gallery.html
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