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 <[email protected]> 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 <[email protected]> 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" <[email protected]> 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. >>> >>> -- >>> PDML Pentax-Discuss Mail List >>> [email protected] >>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>> follow the directions. >>> >> -- >> PDML Pentax-Discuss Mail List >> [email protected] >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- -- Photography takes an instant out of time, altering life by holding it still. Dorothea Lange -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
