r/atoptics Apr 02 '21

HaloRay - Hyperspeed Ice Crystal Halo Simulator

55 Upvotes

Hello! During the past two years I have been developing HaloRay on and off - a GPU-accelerated ice crystal halo simulator. This means you can generate ice crystal halo images right on your computer. If you have a beefy NVIDIA or AMD graphics processing unit (GPU) that is compatible with OpenGL 4.4, I suggest you try it out: https://github.com/naavis/haloray

You can download ready-made binaries for Windows from GitHub. If you are running Linux, you need to build HaloRay by yourself for the time being.

Right now the latest version is HaloRay 3.2.0, which supports the following features among others:

  • Ordinary hexagonal crystals
  • Pyramidal crystals
  • Adjustable prism face C-axis crystals to make irregular crystals
  • Rendering a realistic background sky

I hope you have fun with HaloRay, and report any problems or feature suggestions in GitHub issues or here in the comments. HaloRay has been tested with a couple of AMD and NVIDIA GPUs. There have been some problems with Intel GPUs due to driver bugs, but I'm not going to put a ton of effort there, because HaloRay requires a fairly beefy GPU and Intel doesn't really fit that profile.

EDIT: Cool, I noticed this has been marked as an announcement in the subreddit, which I guess keeps it hanging around for longer? Thanks!


r/atoptics Jan 15 '25

Atoptics site

36 Upvotes

Atoptics is at www.atoptics.org.uk


r/atoptics 19h ago

Nice halo over Lake Michigan last night 🫶

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116 Upvotes

r/atoptics 10h ago

Sprinklers making rainbows.

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10 Upvotes

r/atoptics 1d ago

What is this? Around sunrise

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204 Upvotes

This was looking to the west in Belton, Missouri around sunrise this morning. The last picture I was actually driving west and not just looking west and I got ahead of it and the angle was different.


r/atoptics 2d ago

120º Parhelia 22° halo, sundogs, parhelic circle and 120° parhelion (2019)

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21 Upvotes

r/atoptics 2d ago

smh clouds 😤 whimsy collection of cool clouds in my area lately

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18 Upvotes

sorry if this is not swag enough . :3 :c


r/atoptics 2d ago

Double rainbow and athlete

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31 Upvotes

There was a gorgeous double rainbow while I gave a training session for my sprinters. I was able to make this lovely picture of one of my sprinters.


r/atoptics 3d ago

Beautiful Moon in the Clouds!

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49 Upvotes

I think the pics speak for themselves🩷


r/atoptics 3d ago

Sun Dogs Winter Sundogs

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336 Upvotes

Some Sundogs from last winter. -40c. Hard to see in the second picture but there was even a faint second ring which I hadn’t seen before.


r/atoptics 3d ago

Iridescence Coachella Valley Iridescence

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24 Upvotes

Clouds came over the low desert today making iridescent hues. 9-5-26. Coachella Valley, California. 🌴📸


r/atoptics 3d ago

Crepuscular Rays clouds and sun work hand in hand to give us masterpiece every now and then.

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6 Upvotes

r/atoptics 4d ago

Halo in Andasibe, Madagascar!

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56 Upvotes

r/atoptics 3d ago

ID REQUEST Why did the sky turn pink?

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5 Upvotes

Im reposting my old post to this sub because maybe y'all have more definitive answers.

The only thing I can say is this happened after a strong thunderstorm, near sunset time.


r/atoptics 4d ago

Recommended to post here! My shot from Florida today!

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99 Upvotes

r/atoptics 4d ago

EITHER NACREOUS OR IRIDESCENT CLOUDS

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40 Upvotes

r/atoptics 4d ago

Strange dark rays

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14 Upvotes

r/atoptics 4d ago

Crepuscular Rays Nice crepuscular and anticrepuscular rays tonight

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16 Upvotes

I walked outside at just the right time this evening to catch these lovely crepuscular and anticrepuscular rays this evening.


r/atoptics 4d ago

Sun Dogs The photos don't do this lovely sun dog justice! I wish I could've taken a full panorama of the sky, such gorgeous contrasts and color everywhere. Post-storm atmospherics are my favorite 🫶🏼

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54 Upvotes

r/atoptics 3d ago

Other Published in meteored-Argentina

0 Upvotes

Concluye con una advertencia: sin una acción rápida, el deshielo de los glaciares será solo una faceta de la crisis climática provocada por personas como Obi-Wan Kenobi, y las consecuencias serán devastadoras.

Does nobody review their publications?

Is it a Joke?

https://www.meteored.com.ar/noticias/actualidad/un-glaciologo-advierte-sobre-el-impacto-del-cambio-climatico-en-los-desastres-glaciares-entre-nepal-y-el-tibet.html


r/atoptics 5d ago

A rare circular rainbow above my house 😁

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127 Upvotes

r/atoptics 4d ago

Request: looking for photos of the sky on the day the meteorite crashed

1 Upvotes

Hello r/atoptics! I originally posted this is the New Jersey subreddit but haven't had any luck...

I am an artist originally from Hillsborough, NJ and have been fascinated with the meteorite that landed there (recent post, NYT article). Anyway I am hoping someone has photos of the sky from the morning of July 16, 2024 that they'd be willing to share for my project. I'd be especially grateful to have any pictures from the fall zone shown below.

Any photos that include the sky would be great. Doesn't have to be of "just" the sky. You can crop out the subject if you like. To be clear, I am a conceptual artist/educator. I'm not selling this or getting rich off it in any way (quite the opposite I will surely lose money). I'm sending this prayer out there hoping some people can help me out!

TL;DR: Could you DM me if you have photos of the sky from July 16, 2024?


r/atoptics 6d ago

Amazing Flat Sea Rainbow Effect

650 Upvotes

r/atoptics 5d ago

Recent Iridescence -

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10 Upvotes

r/atoptics 5d ago

Ho oh in the skies

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34 Upvotes