Happy Atheist Forum

General => Science => Topic started by: Icarus on August 09, 2017, 12:34:58 AM

Title: Eclipse
Post by: Icarus on August 09, 2017, 12:34:58 AM
Take a look at this nifty resource to discover how much of the eclipse you will be able to observe. If you do look at it, be damned sure that you have protective dark, very dark glasses. Ordinary sun glasses will not be sufficient,,,, not by a long shot.  Alternatively You could use a pinhole projector, the directions for easy,simple, construction are in several places on you tube.  That is a whole other science thing. The pin hole camera is called ; camera obscura. It is a fun gadget all by itself.

The map is here......http://shadowandsubstance.com/2017/2017e.html
Title: Re: Eclipse
Post by: Davin on August 09, 2017, 03:04:38 PM
I will be right in the middle of totality.
Title: Re: Eclipse
Post by: Biggus Dickus on August 10, 2017, 07:41:03 PM
Thanks for posting the link Icarus.  8)

We will be at about 80% here in southeast Michigan (Detroit), which means we'll get to see something more or less similar to this rather cool video which was shot in California 5 years ago.



Here's another cool link at Vox.com graphic (https://www.vox.com/science-and-health/2017/7/25/16019892/solar-eclipse-2017-interactive-map). You can type in your zip code (Such as did with "48128" for Detroit) to see what the eclipse will look like from your own area.

I'm planning on taking afternoon off that day to see this, just need to find the best spot at this point around here to view it...plan is to hook up with my son and we'll check it out together. Were thinking of going to the University of Michigan Campus where they are having an open viewing at the Planetarium, but we have a couple other options possibly so were not sure yet.

Need to find some solar eclipse glasses though...Davin's lucky he won't need the glasses.






Title: Re: Eclipse
Post by: Arturo on August 11, 2017, 12:45:54 AM
Home Depot might have solar eclipse glasses
Title: Re: Eclipse
Post by: Sandra Craft on August 11, 2017, 02:38:29 AM
Quote from: Arturo on August 11, 2017, 12:45:54 AM
Home Depot might have solar eclipse glasses

Lowes and Toys R Us have them.  Also Walmart, which I won't touch with a 10' pole.
Title: Re: Eclipse
Post by: Arturo on August 11, 2017, 04:26:00 AM
Quote from: BooksCatsEtc on August 11, 2017, 02:38:29 AM
Quote from: Arturo on August 11, 2017, 12:45:54 AM
Home Depot might have solar eclipse glasses

Lowes and Toys R Us have them.  Also Walmart, which I won't touch with a 10' pole.

Never know who is walking out of there with a shotgun...or in!
Title: Re: Eclipse
Post by: Claireliontamer on August 11, 2017, 10:03:10 AM
Quote from: Father Bruno on August 10, 2017, 07:41:03 PM

Davin's lucky he won't need the glasses.



Even if you're at totality make sure you wear the glasses, otherwise you'll get blinded when the sun starts to come back through.
Title: Re: Eclipse
Post by: Biggus Dickus on August 18, 2017, 03:36:10 PM
(https://www.happyatheistforum.com/forum/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FxjkeCZI.jpg&hash=5316b73af75bf0af33062ad9375741726c26a7b7)
Title: Re: Eclipse
Post by: Icarus on August 18, 2017, 10:59:54 PM
Maybe a fun project for kids, even us old kids, is to make a pinhole projector. Here is how to do it for no money and just a few minutes time.

1. Find a cardboard box such as a breakfast cereal box. 
2. cut a piece of white paper the size of the inside end of the box. Place the paper in the end of the box       lying flat against the interior surface of the end.
3. use a knife or scissors to cut two holes in the opposite end of the box.  If the box is....say ten inches wide (25 cm) make the holes at about an inch and a half (4cm) from the edge of the box. The holes will be about 7 inches (17cm) apart. Make the holes about 2 cm or 3/4 inch diameter. One of the holes is the peep hole. the other is for the pinhole per the next step.
4. tape a piece of aluminum foil over one of the holes. Be sure that it is a flat, not a wrinkled bit of foil. Let the foil be big enough that you will not have tape where the hole is.
5. use a needle or  pin to punch a tiny hole in the foil, somewhere near the center of the 2 cm hole.  Tape up any cracks or openings in the box so that light can not enter. Done !
6. Stand facing away from the sun. look through the hole in one side of the box, the part of the box with the pin hole will be over your shoulder facing the sun. The sun rays will penetrate the tiny pin hole projecting an inverted image on the white paper at the end of the box.

Caution: be sure that the pin hole is quite small. This is a bit of optical physics at work. The pin hole has an area that is very small and it will therefore admit only the amount of light that can squeeze through that hole. the pupil of the eye at perhaps 8mm diameter will admit 50 to 60 times as much light as the half mm pinhole. It is only a matter of area of the aperture.

The reason for very large objective lens on a telescope is that the area for light admittance is larger. The large objective lens can reveal faint celestial objects that do not emit much light. A smaller lens would not be able to gather sufficient light to create an image in the eyepiece. 

If you wish to make a grandiose projector just use a longer and larger box. or tape two boxes together end to end. The size of the image will increase in proportion to the additional distance from the pin hole to the white paper projection screen.
Title: Re: Eclipse
Post by: jumbojak on August 19, 2017, 03:18:17 AM
I think I'm might just grab a welding hood. I have shade five goggles but a darker shade is in order. Reading online, some groups are recommending shade 14 which is nuts. I can't see to weld ten inches in front of my face with a shade 14 lens.
Title: Re: Eclipse
Post by: Biggus Dickus on August 21, 2017, 03:53:29 PM
This picture was taken here in Detroit in August,1932 during a solar eclipse. Pictured on the right is Diego Rivera and Frida Kahlo.

This was taken at the Detroit Institute of Arts while Diego was painting his "Detroit Industry Murals".


(https://www.happyatheistforum.com/forum/proxy.php?request=http%3A%2F%2Fi.imgur.com%2Fs5tfnyH.jpg&hash=06f6c4f3fe866495cc8ec36223eb9404c02b8070)
Title: Re: Eclipse
Post by: jumbojak on August 21, 2017, 04:04:54 PM
So much for a welding hood. I think every store is sold out.
Title: Re: Eclipse
Post by: joeactor on August 21, 2017, 04:17:46 PM
Nasa has a number of live streaming sites:
https://eclipse2017.nasa.gov/eclipse-live-stream (https://eclipse2017.nasa.gov/eclipse-live-stream)
Title: Re: Eclipse
Post by: Sandra Craft on August 21, 2017, 05:53:48 PM
Quote from: joeactor on August 21, 2017, 04:17:46 PM
Nasa has a number of live streaming sites:
https://eclipse2017.nasa.gov/eclipse-live-stream (https://eclipse2017.nasa.gov/eclipse-live-stream)

Watching now, since I too did not get any eclipse glasses.  But I understand there'll be another like this in 2024, and I should be prepared by then.
Title: Re: Eclipse
Post by: OldGit on August 21, 2017, 05:56:52 PM
I couldn't see the damn thing from here.  I think the moon got in the way.
Title: Re: Eclipse
Post by: Sandra Craft on August 21, 2017, 06:05:05 PM
Quote from: OldGit on August 21, 2017, 05:56:52 PM
I couldn't see the damn thing from here.  I think the moon got in the way.

It will do that.
Title: Re: Eclipse
Post by: Arturo on August 21, 2017, 08:35:40 PM
These are my photos of the eclipse

http://imgur.com/a/UMN1R
Title: Re: Eclipse
Post by: Ecurb Noselrub on August 21, 2017, 10:40:55 PM
We had the proper glasses and saw it on a clear, hot day in Texas.  It was about 70-75% covered here, at most, but the day became slightly cooler and somewhat dimmer, and with the glasses it was easy to see the eclipse. 
Title: Re: Eclipse
Post by: Icarus on August 21, 2017, 11:09:43 PM
The best longest term duration was to be seen at Carbondale Illinois. A gazillion people came from afar to be in the best location for the event.  Alas, the totality was blocked out by some damned clouds for all but a few seconds. Bummer. God works in mysterious ways.  :wtf:
Title: Re: Eclipse
Post by: Arturo on August 21, 2017, 11:12:11 PM
Quote from: Icarus on August 21, 2017, 11:09:43 PM
The best longest term duration was to be seen at Carbondale Illinois. A gazillion people came from afar to be in the best location for the event.  Alas, the totality was blocked out by some damned clouds for all but a few seconds. Bummer. God works in mysterious ways.  :wtf:
God Damnit God! :grrr:
Title: Re: Eclipse
Post by: Velma on August 21, 2017, 11:55:09 PM
We were just inside the totality zone, in Villa Ridge Missouri. The solar telescope would not focus today, so I watched it through my eclipse glasses. I got a couple of pictures of totality on my cell phone, since I forgot my camera.  However, they were more for myself, so it is not that big a deal. I wanted to stay watch the  entire thing, but my husband started feeling unwell due to the heat, so we headed back home a few minutes after totality.
Title: Re: Eclipse
Post by: Firebird on August 22, 2017, 12:00:15 AM
We were on the beach in Rhode Island. Luckily I'd  had the foresight to buy solar glasses last month off Amazon, though all they had was a 10-pack. I walked around holding the extras I had, and a bunch of people did come up to me asking if I'd sell any of them. Gave them away for free, and the reaction everyone had was well worth it.
We had about 70% coverage and it got cold. The sun dimming sort of reminded me of pictures of the sun from the Mars rovers. Very cool, hopefully someday I'll get to view a full one someday.
Title: Re: Eclipse
Post by: Velma on August 22, 2017, 06:54:18 AM
I've seen a couple of posts by people saying that even if you had clear skies and totality, you would have had a better view online or on television. Forget that. I got up early to see the eclipse even though I knew that there would be all kinds of pictures and video of it online later. It wasn't about seeing it on some big screen TV or HD computer monitor. It was about seeing it with your own eyes, watching the ambient light around you change, and feeling the temperature drop.

Amateur astronomers pull out their telescopes night after night to see tiny little images of things in the night sky despite the fact that there are all sorts of resources all over the place with much better views than what they will see through their telescopes. It is not always about the best view.
Title: Re: Eclipse
Post by: Biggus Dickus on August 22, 2017, 03:16:54 PM
I took the afternoon off work, and my son and I rode our bikes to the center of the city and hung out in the square with other folk who were there to see the eclipse as well, and had a really swell time. (I had two cappuccinos and an expresso, surprised I was able to sleep last night ;D)

Fortunately a friend of mine son had an extra pair of glasses, so we were able to watch the entire thing and it didn't disappoint. Best part besides being able to view the eclipse was just hanging out with not only my son, but a pretty diverse, but cool group of people.
The sky was perfect for just about the entire eclipse, though it got a little cloudy it didn't really intefer with our viewing.

This is the sun without filter. (You can see the actual eclipse just below in the reflection off my camera lens)
(https://www.happyatheistforum.com/forum/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FnV2Ll3L.jpg&hash=578e56200d7a42dee17ef2cf2014091fd28776cb)

Sun viewed through filter.
(https://www.happyatheistforum.com/forum/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FuU3uOfN.jpg&hash=49008cac3e7386ab0e19c094152f84c3902d4ab5)

Son viewing sun!
(https://www.happyatheistforum.com/forum/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FFpyBY51.jpg&hash=babe38768e0c8c6ed1ab59a56c7b16d07b0b6109)


This photo of the International Space Station in front of the sun along with some sun spots is really cool. (Compliments of NASA)

(https://www.happyatheistforum.com/forum/proxy.php?request=http%3A%2F%2Fi.imgur.com%2Fxik16Du.jpg&hash=7f05ae31756a3bf3e44f10725c914a597d423293)

Quote from: Firebird on August 22, 2017, 12:00:15 AM
We were on the beach in Rhode Island. Luckily I'd  had the foresight to buy solar glasses last month off Amazon, though all they had was a 10-pack. I walked around holding the extras I had, and a bunch of people did come up to me asking if I'd sell any of them. Gave them away for free, and the reaction everyone had was well worth it.
We had about 70% coverage and it got cold. The sun dimming sort of reminded me of pictures of the sun from the Mars rovers. Very cool, hopefully someday I'll get to view a full one someday.

That was nice of you to give your extra away, there was a guy viewing with us who had a couple extra that he gave away, and we were all sharing, so everyone who wanted to got a good view.

Overall very special day, and I'm glad I got to spend it alongside my son. 8)


Edited 1 x because I forgot to post my favorite eclipse photograph...82 Airborne Troops jumping during the eclipse at Ft. Bragg, Hoowah!

(https://www.happyatheistforum.com/forum/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FTFKd9Vu.jpg&hash=f1d7c412c2cde4e66e0614f838c86bb57462fa0c)
Title: Re: Eclipse
Post by: Davin on August 25, 2017, 03:26:21 PM
I took a bunch of pictures. Most are not that great. These are the least terrible.

http://imgur.com/a/EVn7y
Title: Re: Eclipse
Post by: Dave on August 25, 2017, 04:05:18 PM
Quote from: Davin on August 25, 2017, 03:26:21 PM
I took a bunch of pictures. Most are not that great. These are the least terrible.

http://imgur.com/a/EVn7y

What were you using, Davin, a phone camera?

This was about the peak of the 2014 eclipse in my area, taken with a Nikon D5100 and 300mm lens. Not sure how much the thin cloud helped, this was during the nearest to a clear sky!

(https://www.happyatheistforum.com/forum/proxy.php?request=http%3A%2F%2Fi.imgur.com%2F1BzTH0f.jpg&hash=6592109e6be480c1b568188bc962076ebdc0db63)
Title: Re: Eclipse
Post by: Davin on August 25, 2017, 04:07:42 PM
Yeah, I normally don't take many pictures at all, I prefer to just experience things. But it was requested that I take some pictures and I wasn't going to buy something that I'm only going to use probably once.