Re: August Solar Eclipse

2017-04-27 Thread Mark Roberts
https://xkcd.com/1828/ -- Mark Roberts - Photography & Multimedia www.robertstech.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.

Re: August Solar Eclipse

2017-04-27 Thread John Sessoms
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

Re: August Solar Eclipse

2017-04-27 Thread John
Don't know how I'll take a photo through the welding mask, but as soon as the filter comes in, I'll take some practice photos; compare them to the view through the mask & let y'all know what I think. I probably should clean the glass on my welding mask while I'm waiting. On 4/27/2017 02:59,

Re: August Solar Eclipse

2017-04-27 Thread Gonz
I have to applaud Halley (of Halley's comet fame) for the incredible insight into how this could be used to determine the distance from earth to sun. http://www.exploratorium.edu/venus/question4.html On Thu, Apr 27, 2017 at 11:03 AM, Gonz wrote: > I used a similar setup

Re: August Solar Eclipse

2017-04-27 Thread Gonz
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 wrote: > From the NASA guidance on solar eclipses: > > "One of the most widely available filters for safe solar viewing

Re: August Solar Eclipse

2017-04-27 Thread Chris Mitchell
>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

Re: August Solar Eclipse

2017-04-27 Thread Gonz
I've heard that in a pinch, welding masks work great for watching solar eclipses and sunspots. On Thu, Apr 27, 2017 at 1:59 AM, Richard Klein wrote: > I wonder how similar the filters are to the glass used in welding masks? > Optical clarity probably isn't as important for

Re: August Solar Eclipse

2017-04-27 Thread Richard Klein
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" wrote: > Update on my preparations (if anyone is interested). > > Stopped by my local Pentax

Re: August Solar Eclipse

2017-04-26 Thread John Sessoms
On 4/25/2017 21:43, Mark Roberts wrote: John Sessoms wrote: The lens is a Sigma AF 300mm f/2.8. I have a matching Sigma 1.4x tele-converter for it. https://www.pentaxforums.com/userreviews/sigma-300mm-f2-8-apo-ex-dg.html The Astrozap filters come in various diameters. They're actually for

Re: August Solar Eclipse

2017-04-25 Thread Mark Roberts
John Sessoms wrote: >The lens is a Sigma AF 300mm f/2.8. I have a matching Sigma 1.4x >tele-converter for it. > >https://www.pentaxforums.com/userreviews/sigma-300mm-f2-8-apo-ex-dg.html > >The Astrozap filters come in various diameters. They're actually for >small telescopes. Do they make them

Re: August Solar Eclipse

2017-04-25 Thread John Sessoms
The lens is a Sigma AF 300mm f/2.8. I have a matching Sigma 1.4x tele-converter for it. https://www.pentaxforums.com/userreviews/sigma-300mm-f2-8-apo-ex-dg.html The Astrozap filters come in various diameters. They're actually for small telescopes. My local Pentax dealer also sells telescopes,

Re: August Solar Eclipse

2017-04-25 Thread Gonz
Is the lens the A* 300 2.8? I have the same lens and need a solar filter like this. On Wed, Apr 19, 2017 at 3:12 PM, John Sessoms wrote: > Update on my preparations (if anyone is interested). > > Stopped by my local Pentax dealer here in Raleigh. > > I got a Manfrotto

Re: August Solar Eclipse

2017-04-19 Thread John Sessoms
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

Re: August Solar Eclipse

2017-04-08 Thread Larry Colen
Marnie (aka Doe) wrote: Don't remember reading the few months ago, and couldn't figure out how to find the mega information in the files on flickr. If you are on a computer, the date is listed right under the photo. However, the flickr mobile site sucks so hard you'd think it was powered

Re: August Solar Eclipse

2017-04-08 Thread Marnie (aka Doe)
Don't remember reading the few months ago, and couldn't figure out how to find the mega information in the files on flickr. So maybe not so bright, or I just not flickr conversant yet. Thanks, Marnie (aka Doe) Or both. ;-) On 4/8/2017 10:36 AM, Larry wrote: I said a few months ago, so I

Re: August Solar Eclipse

2017-04-08 Thread Larry
Oops, I guess I didn't say a few months ago, my apology, it got dropped in one of the edits On April 8, 2017 8:45:13 AM PDT, "Marnie (aka Doe)" wrote: >Thanks for sharing photos. > >I was kind of going for the YEAR. But I guess that was too much to ask >for. > >Marnie

Re: August Solar Eclipse

2017-04-08 Thread Larry
I said a few months ago, so I figure there's only one November 11 within the past few months. Then there is the detail that Flickr shows the date, plus I embed the date in the names of the files and the album. You're a bright lass, I thought that with all of those clues you'd figure it out. On

Re: August Solar Eclipse

2017-04-08 Thread Marnie (aka Doe)
Thanks for sharing photos. I was kind of going for the YEAR. But I guess that was too much to ask for. Marnie (aka Doe) :-) On 4/7/2017 8:26 PM, Larry wrote: Armistance day ://www.flickr.com/photos/ellarsee/albums/72157676380966976 On April 7, 2017 4:29:38 PM PDT, "Marnie (aka Doe)"

Re: August Solar Eclipse

2017-04-08 Thread Marnie (aka Doe)
This is not even worth a response. So naturally I am responding. >>Thwap<< Marnie (aka Doe) ;-) On 4/7/2017 8:35 PM, Stanley Halpin wrote: August 21 2017. On Apr 7, 2017, at 7:29 PM, Marnie (aka Doe) wrote: Time frame? M aka D -- PDML Pentax-Discuss Mail List

Re: August Solar Eclipse

2017-04-07 Thread Stanley Halpin
August 21 2017. > On Apr 7, 2017, at 7:29 PM, Marnie (aka Doe) wrote: > > Time frame? > > M aka D > > On 4/7/2017 3:56 PM, Larry Colen wrote: >> Marnie (aka Doe) wrote: >>> How long has it been since we've had a NorCal gathering? (Assuming you >>> guys had one or two

Re: August Solar Eclipse

2017-04-07 Thread Larry
Armistance day ://www.flickr.com/photos/ellarsee/albums/72157676380966976 On April 7, 2017 4:29:38 PM PDT, "Marnie (aka Doe)" wrote: >Time frame? > >M aka D > >On 4/7/2017 3:56 PM, Larry Colen wrote: >> Marnie (aka Doe) wrote: >>> How long has it been since we've had a

Re: August Solar Eclipse

2017-04-07 Thread Marnie (aka Doe)
Time frame? M aka D On 4/7/2017 3:56 PM, Larry Colen wrote: Marnie (aka Doe) wrote: How long has it been since we've had a NorCal gathering? (Assuming you guys had one or two when I wasn't on PDML.) Just curious. My walking ability is rather limited at the moment. I guess the last one was

Re: August Solar Eclipse

2017-04-07 Thread Gonz
I rented a house in western TN via VRBO two and a half years ago. The owner was perplexed by the inquiry and the incredibly long lead time to rent. Its very close to the max duration point and has space for a lot of people. Right now, very few of my family members have replied as to whether

Re: August Solar Eclipse

2017-04-07 Thread Larry Colen
Marnie (aka Doe) wrote: How long has it been since we've had a NorCal gathering? (Assuming you guys had one or two when I wasn't on PDML.) Just curious. My walking ability is rather limited at the moment. I guess the last one was when the Coyle's were in town and we went up to Marin. --

Re: August Solar Eclipse

2017-04-07 Thread Marnie (aka Doe)
How long has it been since we've had a NorCal gathering? (Assuming you guys had one or two when I wasn't on PDML.) Just curious. My walking ability is rather limited at the moment. Marnie (aka Doe) On 4/7/2017 2:52 PM, Larry Colen wrote: John Sessoms wrote: I have a viewing spot south of

Re: August Solar Eclipse

2017-04-07 Thread Larry Colen
John Sessoms wrote: I have a viewing spot south of Great Smokey Mountains National Park picked out, but I'll be looking for other options as the date draws nearer based on weather forecasts. If anyone knows long term weather trends & where I will find the highest probability of clear skies,

Re: August Solar Eclipse

2017-04-06 Thread Darren Addy
; > You could buy the largest filter for the lenses you have and buy stepdown > rings to fit that filter to your other lenses. > > Kenneth Waller > http://www.pentaxphotogallery.com/kennethwaller > > - Original Message - From: "John Sessoms" <johnsess...@yahoo.co

Re: August Solar Eclipse

2017-04-06 Thread Ken Waller
stepdown rings to fit that filter to your other lenses. Kenneth Waller http://www.pentaxphotogallery.com/kennethwaller - Original Message - From: "John Sessoms" <johnsess...@yahoo.com> Subject: Re: August Solar Eclipse I've been thinking about this for a couple of years no

Re: August Solar Eclipse

2017-04-06 Thread John Sessoms
I've been thinking about this for a couple of years now. I already had the NASA sites bookmarked. I looked at the Nikon & MrEclipse sites Igor suggested, but neither of them answer my question about what *focal length* will give me the best results, which in turn determines which lens I'm going

Re: August Solar Eclipse

2017-04-06 Thread Darren Addy
I don't have any previous experience photographing a solar ECLIPSE, but I'm about to get into serious planning mode for the upcoming one in August. The center line (maximum time in totality) literally crosses 1 mile north of my workplace. I plan on taking the day off and being somewhere with more

Re: August Solar Eclipse

2017-04-06 Thread Igor PDML-StR
John, First of all, thank you for bringing attention to this event. Even though we will get only a partial one, it is a great experience for the kids. I just marked the calendar. I would assume you want to use a long telephoto lens (for the moon). But if you google for e.g. "photographing

Re: August Solar Eclipse

2017-04-05 Thread Stanley Halpin
John, I am sure that someone knows the answer to your question. I don’t. But I wanted to remind you of the old landscapers’ maxim: look behind you. More specifically, when photographing the eclipse using the ideal lens and filters, don’t forget to look at the ground. Way back I was in Indiana

August Solar Eclipse

2017-04-05 Thread John Sessoms
The Great Solar Eclipse is coming to the U.S. in August. Does anyone on the list have prior experience photographing eclipses? I'm planning to use my K-1 & K-3, but I'm wondering which lenses would be my best choices? The pool of lenses I can choose from (full frame): D FA 15-30 f/2.8 Sigma