Posted: Aug 19, 2017 11:51 pm
You bet, I did.
I used a mirror to reflect sunlight onto the pinhole aperture in the mask I put over my library window, turning my library itself into a pinhole camera.
That mirror is big enough to cast a spot of sunlight onto that pinhole for about ten minutes. It's a beveled mirror, so on the projection, the bevels are visible, showing where the sun appears on the mirror. It'll give The Metatrix a visual indicator of when to step outside and adjust the mirror a bit.
I turned a desk lamp on, so my iPhone camera would stop down a bit for this shot. Otherwise, it's far better to observe in the dark in my solar observatory library.
The projected disk of the sun is about 30 mm in diameter. The projection screen, a sheet of white cardboard stuck to a music stand, is about three meters from the pinhole.
My first attempt was putting the pinhole (a small food tin lid with a hole poked through it with a needle) in front of the glass of the window. That produced ghost images caused by reflections and retractions through two sheets of window glass. Ugh.
So, I removed the bug screen from the left half of the window frame and put the pinhole on that side, so the projected rays don't have to go through any glass. All I have to do is open the window on the inside to make a clear light path from the pinhole to the projection screen.
My family can enjoy watching the moon obscure 96% of the sun from the comforts of their chairs, together. Good result.
Sent from my iPad using Tapatalk
I used a mirror to reflect sunlight onto the pinhole aperture in the mask I put over my library window, turning my library itself into a pinhole camera.
That mirror is big enough to cast a spot of sunlight onto that pinhole for about ten minutes. It's a beveled mirror, so on the projection, the bevels are visible, showing where the sun appears on the mirror. It'll give The Metatrix a visual indicator of when to step outside and adjust the mirror a bit.
I turned a desk lamp on, so my iPhone camera would stop down a bit for this shot. Otherwise, it's far better to observe in the dark in my solar observatory library.
The projected disk of the sun is about 30 mm in diameter. The projection screen, a sheet of white cardboard stuck to a music stand, is about three meters from the pinhole.
My first attempt was putting the pinhole (a small food tin lid with a hole poked through it with a needle) in front of the glass of the window. That produced ghost images caused by reflections and retractions through two sheets of window glass. Ugh.
So, I removed the bug screen from the left half of the window frame and put the pinhole on that side, so the projected rays don't have to go through any glass. All I have to do is open the window on the inside to make a clear light path from the pinhole to the projection screen.
My family can enjoy watching the moon obscure 96% of the sun from the comforts of their chairs, together. Good result.
Sent from my iPad using Tapatalk