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Refraction is under the view menu btw

I just fixed some accuracy issues for precisely this type of thing. @ThomasH had a nice photo of the sunrise behind a building where the sun was horizontally off by half a degree and vertically off slightly. The exact DTLDs were known. The fixes...

If people realized the number of variables that affect contrails, it would be so much easier to dismiss the nefarious accusations about them. I am a science teacher and I spend time on contrail science because students believe so much...

There are local high spots that look west, so I placed the camera there and set the time to the eclipse time, with the 3d buildings accurate elevation I know the FOV the sun will pass through and how long it will take This will allow me to setup...

I just fixed some accuracy issues for precisely this type of thing. @ThomasH had a nice photo of the sunrise behind a building where the sun was horizontally off by half a degree and vertically off slightly. The exact DTLDs were known. The fixes...

Incredible work and dedication. Thank you for taking the time to do this.

Can you elaborate a little about how you are using it? I will be travelling to Mallorca and have got as far as using Suncalc.org to work out that if I want to see the sun setting in the sea rather than disappearing behind land, I will need to...

That collection also illustrates how often the sky appears completely white in old photos, due to the limited dynamic range. Modern phone cameras apply HDR by default so will usually show cloud and contrail detail that would have been totally...

Astrometry.net often works very well for finding where in the sky we are looking, but is not great with frames from videos that are noisy or contain other moving objects. So I created a star tracker that attempts to resolve what lights in the...

That collection also illustrates how often the sky appears completely white in old photos, due to the limited dynamic range. Modern phone cameras apply HDR by default so will usually show cloud and contrail detail that would have been totally...

Seems more likely to me it's just a stream of falling burning embers. Like here:

I had a "universal lid" that fit any size of frying pan, one that strongly resembled that "UFO". I unscrewed the knob, thus providing a convenient hole, and threaded it over the wire holding a bird feeder. It did a great job of squirrel-proofing...

Quick update: I have now reached 84% recall rate compared to VASCO. I still have about 17K tiles to download and process, so the recall rate should hit at least 90%. That's a pretty good number. The unpublished third-party list "V" (107K rows)...

Incredible work and dedication. Thank you for taking the time to do this.

Incredible work and dedication. Thank you for taking the time to do this.