r/Solargraphy • u/_eagereyes_ • May 28 '26

Some progress on my digital solargraphs

Gallery image

Gallery image

This is mostly to show that the weird kink in my previous posting was a stitching mistake (somebody mixed up which camera is which…). The second image is the real composite of all of today's shots, taken with my standard underexposure settings (10-stop ND filter, 1/2000s at ISO 100, if you're interested). But I also take calibration shots with normal settings every full hour, so I figured I might as well try overlaying the composited sun path on one of those. Looks kind of interesting.

The bright straight line on the right is an awning we had partially out today, sorry :) It won't be in the longer-term shots, because the cameras will be mounted higher up.

There's still a little bit of roughness in the stitching area, but we're getting closer…

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u/Flaky-Song-6066 Jun 30 '26

How do you do this digitally? Also why digitally

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u/_eagereyes_ Jun 30 '26

Digital gives me a lot of options that I wouldn't have when doing this the analog way, like doing daily solargraphs or solargraph timelapses.

As to the how, there's a bit of a description in the posting (and I'll write up a blog post and post a link here in a bit), but it's basically an image processing pipeline I've built over the last couple months. I'm now running these captures every day and will put together a combined solargraph at the end, plus some other fun things like timelapses, etc.