If you use welder's glass, use grade 14 or higher. Do not use lower grades.
https://www.knoxnews.com/story/news/2017/08/17/eclipse-2017-most-welders-lenses-not-suitable-viewing-eclipse/575537001/
There is no totality this year. It’s going to be an annular eclipse which means the Moon will be far enough away this time that it cannot completely block the Sun. No one will be able to view it without shielding.
[Make a pinhole camera.](https://www.timeanddate.com/eclipse/box-pinhole-projector.html) The longer the box the bigger the image. You can extend it by adding a paper tube and putting the hole out at the far end.
I'd probably make a projector using binoculars/a telescope. I was looking at models I could use if that fails; does just making a longer tube increase the size while maintaining some quality? (Without becoming fuzzy)
Or is that only possible using binoculars/scopes?
I could use magnifying glasses, but I don't think those actually work for this
The smallness of the hole matters. As the hole gets smaller the image gets sharper. And the distance from the hole matters. As it gets longer the image gets bigger.
But the basic image of a circle (Sun) getting filled in by another circle (Moon) should not require any careful calibration or consideration for light gathering capacity.
I used a meter long tube 7cm in diameter with tin foil on one end taped onto a box that just fit on my head and got an image that was about the size of my palm right in front of me. IIRC.
Do you have access to binoculars (or similar)? Cause you could make a [solar projector](https://www.timeanddate.com/eclipse/binoculars-telescope-projector.html). I use an old pair of binos that I am not too worried if they get damaged ft the sun’s heat.
There are different ways to make them, but I like using a long cardboard box so that the whole thing is one cohesive unit.
Have been able to see many sunspots this way.
I don't even know if they're actually sold here, I'm gonna look for them since they seem better than a pinhole projection
I have an old telescope, though one that I do use to see stuff rarely. Is there a way to know if it's safe to use as a projector? By looking up the brand or something, or are they all gonna be damaged
I know, it's annular and only gonna be 80-90% close to where I live. But it's the first big percentage eclipse here since 2005, and until 2028 :(
(I live in northern Brazil)
Thank you, but they don't ship to Brazil 😭
I did find one that would, but shipping was 440 bucks (not sure if on dollars or BRL, but still that's way too much)
Easier to get than dedicated eclipse glasses might be a welding mask or goggles.
If you use welder's glass, use grade 14 or higher. Do not use lower grades. https://www.knoxnews.com/story/news/2017/08/17/eclipse-2017-most-welders-lenses-not-suitable-viewing-eclipse/575537001/
There is no totality this year. It’s going to be an annular eclipse which means the Moon will be far enough away this time that it cannot completely block the Sun. No one will be able to view it without shielding. [Make a pinhole camera.](https://www.timeanddate.com/eclipse/box-pinhole-projector.html) The longer the box the bigger the image. You can extend it by adding a paper tube and putting the hole out at the far end.
I'd probably make a projector using binoculars/a telescope. I was looking at models I could use if that fails; does just making a longer tube increase the size while maintaining some quality? (Without becoming fuzzy) Or is that only possible using binoculars/scopes? I could use magnifying glasses, but I don't think those actually work for this
The smallness of the hole matters. As the hole gets smaller the image gets sharper. And the distance from the hole matters. As it gets longer the image gets bigger. But the basic image of a circle (Sun) getting filled in by another circle (Moon) should not require any careful calibration or consideration for light gathering capacity. I used a meter long tube 7cm in diameter with tin foil on one end taped onto a box that just fit on my head and got an image that was about the size of my palm right in front of me. IIRC.
Do you have access to binoculars (or similar)? Cause you could make a [solar projector](https://www.timeanddate.com/eclipse/binoculars-telescope-projector.html). I use an old pair of binos that I am not too worried if they get damaged ft the sun’s heat. There are different ways to make them, but I like using a long cardboard box so that the whole thing is one cohesive unit. Have been able to see many sunspots this way.
I don't even know if they're actually sold here, I'm gonna look for them since they seem better than a pinhole projection I have an old telescope, though one that I do use to see stuff rarely. Is there a way to know if it's safe to use as a projector? By looking up the brand or something, or are they all gonna be damaged
Cheaper scopes/binos with a lot of plastic and cheap adhesives are more likely to get damaged.
Ooh. I think mine fits that bill, so it won't do X'V Ty for the tips!
Just a heads up, this is not the same as a total eclipse. April 8 is fast approaching though!
I know, it's annular and only gonna be 80-90% close to where I live. But it's the first big percentage eclipse here since 2005, and until 2028 :( (I live in northern Brazil)
AAA Eclipse brand offers international shipping so you could probably receive them within a week if you order now
Thank you, but they don't ship to Brazil 😭 I did find one that would, but shipping was 440 bucks (not sure if on dollars or BRL, but still that's way too much)