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awesome DIY led photo science video

New Moon

The above video shows a really neat interactive art installation made of welded steel, light bulbs, and LEDs.  The purpose is to allow people to see all the phases of the moon at once.  Turning the knob below the moon turns a mirror inside the light bulb moon which in turn changes the shadow effect that the viewer sees.  This allows the viewer to see all the different phases of the real moon just a few feet above their heads.  That’s pretty neat!

This isn’t the first illuminated art instillation by Caitlind r.c. Brown and Wayne Garrett.  The astronomer and space guy in me though thinks this is the first one that I’d go out of my way to visit though.  I wouldn’t do an interview, I’m not that type of person, you know that.

Today is the new moon, which mean’s that it will be totally dark outside tonight, it doesn’t look like the LED inside the sphere can make the art fully dark.  Instead, it just gives it a shadow which is actually closer to what actually happens on the real moon anyway.  I think they should have welded some signs on the posts holding up the moon to give some extra information along those lines.

{MAKE|Incandescent Cloud}

Categories
awesome internet photo science

Humans vs. Cameras

Have you ever wondered what how accurate night sky photographs are at recreating what a human eye can see?  Well, flickr user inefekt69 has decided to travel to the a spot known as The Pinnacles in Western Australia and try and capture the difference.

night sky compare

He took a 30 second exposure at f/2.8 ans ISO 3200, and took note of what he could actually see.  When he got back he did some post-processing work, adjusting the levels, and color until he got the resulting photo as close to his memory as possible.  Overall, I’d say he did a pretty good job of representing what the human eye can see, and then comparing it to what a camera lens can capture over time.

One thing I will say however is that his memory shows far too few stars.  At least, when I’ve been out to dark sky places in the Western United States, I remember the night sky being filled with stars, thousands of little pin-pricks.  That could just be the time of the year, and the position in the night sky west Utah is compared to West Australia.

{Peta Pixel}

Categories
awesome photo science

Milky Way

NASA’s Astronomy Picture of the Day the other day was a beautiful multi-shot panorama of the Milky Way over Yellowstone National Park.  When I was there back in June, it was durring the Full Moon, so unfortunately I wasn’t able to see anything as beautiful as this.  But don’t worry, I’ll be back there eventually, and I’ll plan my trip better and show up when there’s no moon.

{reddit}