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Old 25.02.2015, 14:50
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Solar eclipse

I'm quite excited about this next month!

http://www.timeanddate.com/eclipse/i...zerland/zurich



I'd really like to watch it, apparently a "number 14 welders glass" is NASA-approved? I have no idea what this is but can anyone tell me where to get one of these
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Old 25.02.2015, 15:01
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Re: Solar eclipse

I'm quite excited too. I suggest you buy an astronomy magazine, there will eventually have some solar protection. (but only if it's a good magazine)
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Old 25.02.2015, 15:27
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Re: Solar eclipse

You can find welder's glasses at places where they sell welding equipment, Jumbo, Bauhaus, etc,
http://tel.local.ch/de/q?what=Baubedarf&where=&rid=EKaz

BUT, you could also fill a large wide plastic bowl (or bucket) full up with water, and look at the sun's reflection.
This is very safe as the harmful rays do not reflect, and children can watch the view too.
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Old 25.02.2015, 16:35
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Re: Solar eclipse

I assume you will be outside, so it is a good idea to observe the wild life: the birds can't believe it's bed time already and fly about wildly, probably saying "this is the end of the world"
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Old 25.02.2015, 17:43
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Re: Solar eclipse

Wow I did not know about that. Thanks for sharing! Can one use the special dark glasses we used in 1998?
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Old 25.02.2015, 17:52
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Re: Solar eclipse

When we were kids, we darkened some small plates of glass with smoke from a candle to watch the eclipse not sure how effective it was (in 1957)!?
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Old 25.02.2015, 18:07
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I'm quite excited about this next month!

http://www.timeanddate.com/eclipse/i...zerland/zurich



I'd really like to watch it, apparently a "number 14 welders glass" is NASA-approved? I have no idea what this is but can anyone tell me where to get one of these
From a number 14 welder!


It's a coloured, IR-ray-cutting piece of glass, often used in photography (of course, originally for welding -- and you can still buy welding helmet lenses in shade 14). You can buy one on amazon for a few dollars, e.g. http://www.amazon.com/50mm-Circular-...f=cts_ap_4_fbt or http://www.amazon.com/5-25-Green-Wel...ref=pd_cp_hi_1 (in green -- other variants also available, e.g. in grey).


Otherwise, take Sbrinz's advice (with sunglasses as well, if you want).

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Wow I did not know about that. Thanks for sharing! Can one use the special dark glasses we used in 1998?
If they were produced specifically for viewing the sun, they should be OK. I don't suppose you still have the packaging, or any labels...?

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When we were kids, we darkened some small plates of glass with smoke from a candle to watch the eclipse not sure how effective it was (in 1957)!?
Uhhh... no. Don't do this!

Last edited by 22 yards; 25.02.2015 at 18:17.
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Old 25.02.2015, 18:59
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Re: Solar eclipse

I observed the transit of Venus by projecting an image of the sun through a pair of low power binoculars onto a white sheet.
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Old 25.02.2015, 19:52
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Re: Solar eclipse

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I observed the transit of Venus by projecting an image of the sun through a pair of low power binoculars onto a white sheet.
I've… seen things you people wouldn't believe… Attack ships on fire off the shoulder of Orion. I watched c-beams glitter in the dark near the Tannhäuser Gate.
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Old 25.02.2015, 20:03
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Re: Solar eclipse

Some DIY options if you want to view without frying your eyeballs or buying welding glasses for a rare event.

http://www.exploratorium.edu/eclipse/how.html
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Old 25.02.2015, 20:54
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Re: Solar eclipse

I'm holding out for the inverse eclipse in New Zealand, 2042. They're really quite rare - this will be the third in a thousand years - as they involve the moon going behind the sun.

I just hope I'm still alive to see it. Fingers crossed!
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Old 25.02.2015, 21:03
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Re: Solar eclipse

Quote:
I'm holding out for the inverse eclipse in New Zealand, 2042. They're really quite rare - this will be the third in a thousand years - as they involve the moon going behind the sun.

I just hope I'm still alive to see it. Fingers crossed!
You can borrow my deep freeze for 30 years
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Old 25.02.2015, 21:12
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Re: Solar eclipse

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I've… seen things you people wouldn't believe… Attack ships on fire off the shoulder of Orion. I watched c-beams glitter in the dark near the Tannhäuser Gate.
…All those moments will be lost in time like tears in the rain.
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Old 25.02.2015, 21:41
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Re: Solar eclipse

Quote:
I'm holding out for the inverse eclipse in New Zealand, 2042. They're really quite rare - this will be the third in a thousand years - as they involve the moon going behind the sun.

I just hope I'm still alive to see it. Fingers crossed!
Excellent. I do hope you live till at least 2042. You'll need all that time just to get into the appropriate viewing position (assuming Mr Branson's rocket-ship ö.V. is up and running in time).
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Old 25.02.2015, 21:47
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Re: Solar eclipse

If you have any southish-facing windows, it's easy enough to turn your living room into a pinhole camera.

Tape cardboard or aluminum foil with a pinhole over one of the windows, and darken all the other windows completely (blinds or shutters if you have them, otherwise cardboard/foil without a pinhole).

Now you should have a dark room with one bright spot, probably looks more like an ellipse than a circle, probably located on the floor somewhere. That's the sun's image.

You can stop here and just watch your eclipse on the floor if you want... it'll look like an ellipse with a bite out of it rather than a circle with a bite out of it, but if that's cool with you it's cool with me. Otherwise, time to set up your viewing surface. A piece of white paper taped onto a sheet of cardboard will do nicely. Prop it up at an angle, play with the angle until the sun's image looks round, and there you are.

Note that shadows cast by the sun always move left-to-right and (in the morning) top-to-bottom, so you'll want to position the sun's image near the upper left corner of your paper initially so you don't have to keep adjusting it. That's a detail though.

Enjoy your eclipse
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Old 25.02.2015, 22:09
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Re: Solar eclipse

I also remember the last time there was a partial solar eclipse that I could even see it in a shadow, cross your fingers so you create a mesh, make the mesh holes small, look at the shadow on the ground. You can see the moon cross in front of the sun.

Ha, I found a picture, my memory is decent!
http://farm9.staticflickr.com/8008/7...1747b551_z.jpg
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Old 25.02.2015, 23:34
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Re: Solar eclipse

If it's like the one in 1999 it will be thick cloud and you won't need to worry about glasses etc.
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Old 25.02.2015, 23:37
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Re: Solar eclipse

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If it's like the one in 1999 it will be thick cloud and you won't need to worry about glasses etc.
It wasn't thick cloud everywhere in '99.

That was one of the most mindblowing experiences of my life. I'd recommend it to anyone who's never seen one - worth saving up and flying across oceans for - really!

(although I only had to go as far as the Champagne region to see it...)
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Old 26.02.2015, 06:48
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Re: Solar eclipse

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I've… seen things you people wouldn't believe… Attack ships on fire off the shoulder of Orion. I watched c-beams glitter in the dark near the Tannhäuser Gate.
A transit of Venus isn't that spectacular.

What I saw was something like this:


The sky was clear at the beach in Normandy in 1999. The birds all went quiet during totality. You could see the shadow of the moon sweep across.
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Old 26.02.2015, 09:07
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Re: Solar eclipse

Quote:
I'm holding out for the inverse eclipse in New Zealand, 2042. They're really quite rare - this will be the third in a thousand years - as they involve the moon going behind the sun.

I just hope I'm still alive to see it. Fingers crossed!
That would be so incredibly awesome. Hope I am still around too!
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