DOWNLOAD ZIPPED PHOTOSHOP FILE: (updated Dec 3, 2025)
I made an updated version of the old Guy Buhry Solar Ruler design.
I put the the concentric lines on Photoshop layers, so you can turn off the measuring lines you don’t need.
I also translated from French to English.
I never liked that the concentric rings were all there even if using a shot with short proms. It made it look like the proms were underwhelming, even when they’re awesome.
So I made it into Photoshop layers, so you can turn off the measuring lines you don’t need. Will share Photoshop file in first comment.
Note: you want the Sun circle to be on the sun itself, not the “atmosphere” of the Sun. It’s done correctly in the first image aboe (I did it), and incorrectly in the second image above, lol (I didn’t do it, but left it for an example)
I also translated this from French to English. Feel free to translate for your local language.
I’m sure someone won’t like that, but: English is the Universal language of science. Because, while it’s the 4th most common first language, it’s by far the most common SECOND language, so most people can understand it.
So it should either be in your local language (feel free), or in English, or in about 100 languages. lol
The test images here are NASA for the long proms and Dominique Gering for the short prom pic.