u/Little-Name9809

Updated with HDR

Mountain View, CA

Was checking a old photo (shot on Jan 6 this year). I thought it was halo back then, but after checking this sub, I realize this is corona.

What's cool is you can see the rainbow rings repeat 3 times (at least the visible ones). These are actually different orders of diffraction. And then we can use the angular size and the light wavelength to calculate the particles (which caused the diffraction)'s size.

The angular can be estimated by the moon as reference. I did a rough estimation and I think, based on the 1st and 2nd-order diffraction rings, the particle size is about 40um. This is larger than typical cloud waterdrop size but fits typical ice crystals size range. What do you think? Does this calculation sound right to you?

Shot 06/02/2026

Just got mine today and honestly was shocked by the optical quality. I have not used Canon L lens before but it seems really good. I do a bit of bird spotting and also stargazing and this seems a game changer to the binocular front of my hobby.

(Would like to post a photo however my attempts using another camera & cellphone don't really do justice for it)

A side note is the battery compartment seems quite janky. A quick search showed it's apparently not only me. But overall no complaints and quite happy with it.

Normally water is a good thermal emitter but at lower angles we can still see reflection of hot/cold objects.

my favorite thermal shot

Super excited as this finally delivered. I think I'm probably one of the first real customers in the U.S.? Because I searched and literally couldn't find anyone who posted this.

This device is fully metal and feels super rugged which is awesome. I was worried I'm going to get a cheap plastic piece but when you touch it you know it's the real deal. It can also do the Chimera flip as you can see in the third photo.

Can't wait to test tonight. I have a L3 supergain bino bridge and a 1280 core thermal in my collection and super pumped to test the digital quad with them. From all I know, the ADNV 1 inch sensor should be pretty good.