Gregory's Server24 hours of Earth's rotation, with the camera locked to the sky instead of the ground. We're all hanging out on this spinning rock.
Brilliant video by Bartosz Wojczyński. https://artuniverse.eu/gallery/190705-rotation24h #nature #wonder #earth
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92 comments
@coreyspowell it also demonstrates the scales of space. The sun is “orbiting” the camera at a huge distance in this video, yet the other stars don’t even budge because they’re so far away  @coreyspowell the crepuscular period and similar in the morning is surprisingly sudden, not like a gentle casual relaxed slope or fade between sky colour and star backdrop @coreyspowell wow, the looping is so well done, this is severely hypnotic! @coreyspowell I find it very confusing to try to think about where the sun is in this video. It should only be dark when the Earth blocks the sun, but it looks like it's dark for more than half of the rotation. The video says it was filmed in the southern hemisphere near the winter solstice, so I think the camera is pointing south, and the sun is behind the camera a bit at all times. But it's still hard to get it to make intuitive sense in my head. @coreyspowell One thing I love about this video is that you can use it to do some maths to figure out where this was filmed - you can't figure out what longitude, but you should be able to get a rough latitude, and even just a quick think makes it clear that this is in the Southern Hemisphere, looking South. The relatively low height of the apparent centre of rotation above the horizon says we're closer to the equator than the poles. @coreyspowell OK, so I guess more information would actually be required to do any more maths than that, you'd need some idea of scale. @ftp_alun @coreyspowell I guess I can be excused for thinking of the Australian Outback when I saw it. But following the link it says it's in Namibia. The latitude wasn't wrong. 😀 https://www.tivoli-astrofarm.de/en @coreyspowell Wow! Crazy to think we're spinning every second but can't feel it!  @coreyspowell It's the Southern Celestial Pole, for any confused northern hemisphere people. Even on a tiny phone screen, the Magellanic Clouds are a dead giveaway  @coreyspowell What's even crazier is that every single person, animal, plant and rock on this earth has a story to tell. So insignificant to time and yet it was that it's the culmination of all that built up in the time before it and effort to be where it is today. To quote a videogame (because I'm a big nerd) "No snowflake ever falls in the wrong place." - Zenyatta (And probably others ¯\_(ツ)_/¯)  @coreyspowell This makes it very clear that we're all on a very slow rollercoaster ride, forever @coreyspowell the transition from day to night and night to day is so quick, you can't see the stars...then suddenly you can.  @coreyspowell how long would each frame in that time lapse need to be exposed to reveal the night sky to that magnitude? How frequent, frames per second, minute,hour, were the time lapse intervals? @coreyspowell Oh nice, do you need to have a battery connected, or is there a wire, I would imagine that the wire would become tangled after rotating enough, is there a limit to how many days this can go on for?  Very impressive! How does one lock the camera to the sky during the day? I can understand the night, where the nightsky can act as a point of reference. @coreyspowell This is most excellent—and trippy! Makes one appreciate the Cosmos, and Gravity, for sure. 👍🏼🤣😵💫   @coreyspowell How can we dance  @coreyspowell Looking for a lampost! @coreyspowell looks flat to me ;). Anyway, more seriously, I am feeling seasick after watching that!   * the audio book for DENIAL " .. author wrote about that coloration of horizon:  The sky far from cities makes you understand why people saw mythical creatures in the sky. People who haven't ever left the city can't understand...
@coreyspowell I cannot wrap my brain around this. Don't stars rise and set like the sun? Is it because the galaxy is so far away? Why do we wobble and not spin? It is perspective? .. @coreyspowell Another cool, but live, camera in Namibia is the wildlife camera @coreyspowell I love clips like this. Reminds of Dr. Who claiming to feel our planets' rotation beneath his feet.  @coreyspowell Yes, "Ladies and Gentlemen, we are floating in space" was a truism. @coreyspowell "How can a camera be locked to the sky?" Using a device that doesn't allow its orientation relative to the universe to change. "had no idea, that this exists..." To find out more about such devices: https://www.google.com/search?q=motorized+equatorial+mount  This must be fake! I know that the earth is flat. I am in the middle of it. I feel stable and everything is safe. @coreyspowell @macmaniacs so the big turtle on which our disc world sits, did a spin in space. So what? Seriously, looks amazing 😊 @coreyspowell Hoe bedoelen ze, locked to the sky? Wel prachtig hoor maar ik wil het snappen. @coreyspowell anyone know how to lock a camera to a point in the sky. I would love to try this. @laarmanr  @coreyspowell perfectly looped as well! Any idea how it was done? Did they hook it up to a motor to have the opposite spin?  |
@coreyspowell That’s so cool!