A long time ago there was another total eclipse that tracked over
eastern NC. I did the pin-hole viewer. Where I lived was about 60 miles
outside the path of totality. We saw a partial eclipse; something over 90%.
I sort of "remember" the reason I watched it from home was because I was
too young to drive at the time, but according to NASA's eclipse site, it
was March 7, 1970. It was a Saturday & I had a motorcycle at that time.
So, I don't know why I didn't just get on my bike & head east to where I
could have seen the whole thing?
The pin-hole viewer thing works, but the projected image is TINY!
On 4/27/2017 12:03, Gonz wrote:
I used a similar setup a few years back during the transit of Venus.
It was an amazing thing to see.
On Thu, Apr 27, 2017 at 10:50 AM, Chris Mitchell
<chris.mitch...@which.net> wrote:
From the NASA guidance on solar eclipses:
"One of the most widely available filters for safe solar viewing is a
number 14 welder's glass, available through welding supply outlets."
Full guidance here https://eclipse.gsfc.nasa.gov/SEhelp/safety.html
When we had a near total eclipse in my bit of the UK a few years ago,
I used a reversed 50mm Pentax manual lens to project it. That worked
pretty well.
Chris
On 27 April 2017 at 07:59, Richard Klein <rich...@gmail.com> wrote:
I wonder how similar the filters are to the glass used in welding masks?
Optical clarity probably isn't as important for welding masks.
On Apr 19, 2017 4:13 PM, "John Sessoms" <johnsess...@yahoo.com> wrote:
Update on my preparations (if anyone is interested).
Stopped by my local Pentax dealer here in Raleigh.
I got a Manfrotto 700RC2 fluid head that will take my existing mounting
plates for my 3021 legs.
He ordered an Astrozap AZ-1514 Glass full aperture Solar Filter to fit
over the lens hood of my 300mm f/2.8 (124-130mm).
https://www.astrozap.com/scripts/prodView.asp?idproduct=61
I hope to be able to start practicing safely shooting the sun by next
week to see how much of the frame I'll fill & whether or not I'm going
to need to use the 1.4x tele-converter. I want to have enough of the
frame filled to get some detail on the sun, but loose enough to get the
corona & solar prominences un-cropped.
I'd like to have that lens on the K-1 because of the articulated screen,
but I'll switch it to the K-3 if I find out I need the 1.5 crop factor.
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