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Clive
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Re: totality in Africa
Clive"Max"Maxfield   1/6/2017 5:23:50 PM
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@RobertM: In 1973 my HS chemistry teacher convinced several of us to book on a cruise out to Africa...

You got to meet (well, see) Neil Armstrong and Isaac Isaac Asimov -- AND a full eclipse for 8 minutes of totality? Best high school chemistry teacher ever!!! I hope you thanked him or her for persuading you to have this amazing life experience!

Clive
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Re: Solar Eclipse
Clive"Max"Maxfield   1/6/2017 5:15:27 PM
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@amacon: We handed out the solar eyeglasses to everyone at Christmas including books for the kids explaining eclipses...

It's great that you are doing this as a family -- something for everyone to remember -- you say you live in the southern US -- have you thought about making a trip/holiday of it to see the total eclipse?

amacon
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Solar Eclipse
amacon   1/6/2017 3:25:16 PM
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We handed out the solar eyeglasses to everyone at Christmas including books for the kids explaining eclipses - we live in the southern US and the kids actually checked out cloud coverage for the entire US to verify we would have good opportunities for viewing.

RobertM1909550
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totality in Africa
RobertM1909550   1/6/2017 12:17:30 PM
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In 1973 my HS chemistry teacher convinced several of us to book on a cruise out to Africa, nere the Canary Is., where the ship tracked the eclipse for 8 minutes of totality.  Lots of science notables were on board - Neil Armstraing, Isaac Azimov - and the ship deck was covered with tripods and astronomy buffs just prior to totality.  At the moment of the total eclipse, a deafening sound of shutters erupted, followed very shortly after with laughter from the sound, and then collective "ooohs" and "ahhs" from those present.  I even found a link to the event: https://en.wikipedia.org/wiki/Solar_eclipse_of_June_30,_1973#Observations

elizabethsimon
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Re: The Tree Effect
elizabethsimon   1/6/2017 11:47:09 AM
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A filter over the camera lense shouldn't be necessary if its pointing somewhere other than the sun. My idea is to put it on a tripod to catch peoples reactions and shadows etc...

David Ashton
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Re: The Tree Effect
David Ashton   1/5/2017 10:12:44 PM
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@Elizabeth - "I remember the last partial eclipse I saw that the shadows looked strange..."

I think this is because, as Betajet points out above, a leafy tree has the effect of many pinholes, so the sun shining through them will appear as crescent-shaped blobs of light instead of round ones.  Also I think light diffusion through the non-eclipsed part of the atmosphere gives a different effect from the sun being below the horizon.

Oh, and put something over your video camera lens if you don't want to burn out the sensor (sooty glass / ND filters / a lens from a pair of eclipse sunglasses....)

elizabethsimon
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Re: The Tree Effect
elizabethsimon   1/5/2017 8:16:43 PM
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Maybe a video camera on a tripod to capture the sky darkening and reactions of everyone before, during and after.


I remember the last partial eclipse I saw that the shadows looked strange...

David_Ashton_EC
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Re: The Tree Effect
David_Ashton_EC   1/5/2017 4:13:22 PM
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In the good old days :-) we used to take a piece of glass and hold it over a candle flame so it got covered in soot.  When it was black enough that you couldn't (or could hardly) see a normal scene through it, it was dark enough.

For photography you can use ND (Neutral Density) filters - but use a lot of them, they go up to ND8 usually (let 1/8 of the light through) and I'd probably want to use 3 of them at least.  You don't see them around as much now with digital cameras as in the old film days.  And point your camera at the sun for the minimum possible time.  (or you could just sacrifice a UV filter and use the soot trick above :-)

Clive
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Re: Madras, Oregon, here I come....
Clive"Max"Maxfield   1/5/2017 2:17:55 PM
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@Elizabeth: ...Now I need to get those eclipse glasses on order....

I just received confirmation that mine are on the way -- it's amazing how quickly you can give these out -- I might be tempted to order another 30...

Clive
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Re: The Tree Effect
Clive"Max"Maxfield   1/5/2017 2:16:24 PM
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@betajet: ...Show this to your grandkids.  They'll say "Golly, Mr. Science!" or its modern equivalent ("Meh")...

LOL

I would like to take some photos, but everything I've read says to leave this to the professionals and to simply enjoy watching the eclipse, because the ~2.0 minutes will be passed before you know it.

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