4 ms·

Cathedral, Mountain, Moon

150 points by _Microft 3y ago

7373737373 3y ago
I wish there was an Android app that set the wallpaper to the current APOD
- saturn_vk 3y ago
  Isn't there a muzei plugin for that?
- throw0101b 3y ago
  * https://www.appbrain.com/app/astronomy-picture-of-the-day/com.blork.anpod https://www.appbrain.com/app/astronomy-picture-of-the-day/co... * https://play.google.com/store/apps/details?id=uk.co.jakelee.apodwallpaper&hl=en_CA&gl=US https://play.google.com/store/apps/details?id=uk.co.jakelee.... * https://www.apk4fun.com/apps/uk.co.jakelee.apodwallpaper/ https://www.apk4fun.com/apps/uk.co.jakelee.apodwallpaper/ * https://ifttt.com/applets/fqHc2xPF-apod-wallpaper-setter https://ifttt.com/applets/fqHc2xPF-apod-wallpaper-setter
  - 7373737373 3y ago
    Unfortunately these don't seem to work with my Android version
herunan 3y ago
They don’t explain how they took this photo, but I’m assuming they used the lens compression technique. In simple terms, the photographer takes a photo very far away from the foreground using a really long lens. This makes the background appear bigger, relative to the foreground.
- bayindirh 3y ago
  You have to have something around 600mm (or even something longer) to magnify the moon that much. EXIF reports 500mm with an EOS R5, which is a full frame machine. So it's cropped generously.
  - inexcf 3y ago
    That is actually not correct. The focal length has no effect on this.
    - ricardobeat 3y ago
      It does, to the extent that you can’t normally take a 50mm shot and crop it to the same framing because of resolution limits - you’ll end up with a blurry 128x96px image. Maybe a fuji GFX could do it, but here the long range is what allows this particular image and perspective to be produced.
    - bayindirh 3y ago
      Completely opposite. Longer the lens, more the compression. To be able to get moon at that size with that resolution, you need “half a telescope”. Try shooting the moon with a 135mm lens, you’ll get a coin on the sky.
- p-e-w 3y ago
  Yes. That's because as you move away from the foreground object, the ratio of distances to foreground and background decreases. In the limit, this ratio approaches one, and you get an orthographic projection, where the projected size of objects (after zooming in) is independent of their distance from the camera.
- hrnnnnnn 3y ago
  Worth nothing it's less to do with the lens and more about distance to the subject. If you took a wider angle shot and cropped it, it would look the same (albeit lower resolution).
  - stavros 3y ago
    Yes, this is fairly counterintuitive but true. The focal length has nothing to do with it (other than letting you see the subject from farther away).
nuccy 3y ago
My favorite genre of astrophotography involving perfect alignment are photos of ISS transits over the Sun or Moon, e.g. [1], [2]. There is even a website which caluclates such transits [3]. Destin from "Smarter Every Day" made a video [4] about ISS transiting the Sun during an eclipse with all the details of preparations and setup. 1. https://petapixel.com/2023/06/13/photographer-captures-iss-crossing-the-sun-during-astronaut-spacewalk/ https://petapixel.com/2023/06/13/photographer-captures-iss-c... 2. https://mashable.com/article/space-station-moon-transit-photo https://mashable.com/article/space-station-moon-transit-phot... 3. https://transit-finder.com/ https://transit-finder.com/ 4. https://youtu.be/lepQoU4oek4?feature=shared https://youtu.be/lepQoU4oek4?feature=shared
gizajob 3y ago
Wow.
Dalewyn 3y ago
Can I just say I love how 1995 the HTML for APOD is?
- phkahler 3y ago
  And they could update the look quite a bit without bloat or extra JS.
thisisauserid 3y ago
They must have had incredible patience to wait millions of years until that mountain finally lined up with that cathedral.
_Microft 3y ago
The mountain in the background looks a lot different than I expected and is actually the highest peak in this part of the Alps: https://en.m.wikipedia.org/wiki/Monte_Viso https://en.m.wikipedia.org/wiki/Monte_Viso More on Wikicommons: https://commons.m.wikimedia.org/wiki/Category:Monte_Viso https://commons.m.wikimedia.org/wiki/Category:Monte_Viso

150 points by _Microft 3y ago

7373737373 3y ago

I wish there was an Android app that set the wallpaper to the current APOD

saturn_vk 3y ago
Isn't there a muzei plugin for that?
throw0101b 3y ago
* https://www.appbrain.com/app/astronomy-picture-of-the-day/com.blork.anpod https://www.appbrain.com/app/astronomy-picture-of-the-day/co... * https://play.google.com/store/apps/details?id=uk.co.jakelee.apodwallpaper&hl=en_CA&gl=US https://play.google.com/store/apps/details?id=uk.co.jakelee.... * https://www.apk4fun.com/apps/uk.co.jakelee.apodwallpaper/ https://www.apk4fun.com/apps/uk.co.jakelee.apodwallpaper/ * https://ifttt.com/applets/fqHc2xPF-apod-wallpaper-setter https://ifttt.com/applets/fqHc2xPF-apod-wallpaper-setter
- 7373737373 3y ago
  Unfortunately these don't seem to work with my Android version

herunan 3y ago

They don’t explain how they took this photo, but I’m assuming they used the lens compression technique. In simple terms, the photographer takes a photo very far away from the foreground using a really long lens. This makes the background appear bigger, relative to the foreground.

bayindirh 3y ago
You have to have something around 600mm (or even something longer) to magnify the moon that much. EXIF reports 500mm with an EOS R5, which is a full frame machine. So it's cropped generously.
- inexcf 3y ago
  That is actually not correct. The focal length has no effect on this.
  - ricardobeat 3y ago
    It does, to the extent that you can’t normally take a 50mm shot and crop it to the same framing because of resolution limits - you’ll end up with a blurry 128x96px image. Maybe a fuji GFX could do it, but here the long range is what allows this particular image and perspective to be produced.
  - bayindirh 3y ago
    Completely opposite. Longer the lens, more the compression. To be able to get moon at that size with that resolution, you need “half a telescope”. Try shooting the moon with a 135mm lens, you’ll get a coin on the sky.
p-e-w 3y ago
Yes. That's because as you move away from the foreground object, the ratio of distances to foreground and background decreases. In the limit, this ratio approaches one, and you get an orthographic projection, where the projected size of objects (after zooming in) is independent of their distance from the camera.
hrnnnnnn 3y ago
Worth nothing it's less to do with the lens and more about distance to the subject. If you took a wider angle shot and cropped it, it would look the same (albeit lower resolution).
- stavros 3y ago
  Yes, this is fairly counterintuitive but true. The focal length has nothing to do with it (other than letting you see the subject from farther away).

nuccy 3y ago

My favorite genre of astrophotography involving perfect alignment are photos of ISS transits over the Sun or Moon, e.g. [1], [2]. There is even a website which caluclates such transits [3]. Destin from "Smarter Every Day" made a video [4] about ISS transiting the Sun during an eclipse with all the details of preparations and setup. 1. https://petapixel.com/2023/06/13/photographer-captures-iss-crossing-the-sun-during-astronaut-spacewalk/ https://petapixel.com/2023/06/13/photographer-captures-iss-c... 2. https://mashable.com/article/space-station-moon-transit-photo https://mashable.com/article/space-station-moon-transit-phot... 3. https://transit-finder.com/ https://transit-finder.com/ 4. https://youtu.be/lepQoU4oek4?feature=shared https://youtu.be/lepQoU4oek4?feature=shared

gizajob 3y ago

Wow.

Dalewyn 3y ago

Can I just say I love how 1995 the HTML for APOD is?

phkahler 3y ago
And they could update the look quite a bit without bloat or extra JS.

thisisauserid 3y ago

They must have had incredible patience to wait millions of years until that mountain finally lined up with that cathedral.

_Microft 3y ago

The mountain in the background looks a lot different than I expected and is actually the highest peak in this part of the Alps: https://en.m.wikipedia.org/wiki/Monte_Viso https://en.m.wikipedia.org/wiki/Monte_Viso More on Wikicommons: https://commons.m.wikimedia.org/wiki/Category:Monte_Viso https://commons.m.wikimedia.org/wiki/Category:Monte_Viso