hexagonal crystals create a halo around the moon. in optics it is called an airy disk and size due to diffraction of light. I was able to observe this about a week ago from my home town. beautiful

hexagonal crystals create a halo around the moon. in optics it is called an airy disk and size due to diffraction of light. I was able to observe this about a week ago from my home town. beautiful

Minimum Airy Disk diameter and corresponding maximum resolution   depending on disk separation for a diffraction-limited lens and green-yellow light (0.000555 mm wavelength)

Minimum Airy Disk diameter and corresponding maximum resolution depending on disk separation for a diffraction-limited lens and green-yellow light (0.000555 mm wavelength)

Airy disks not resolved

Airy disks not resolved

Lens aperture and diffraction. Nikon D5100 due pixel size 4.8 µm above f11 starts to show difraction, while Nikon D4 with pixel 7.3 µm shows difraction above f16.

Lens aperture and diffraction. Nikon D5100 due pixel size 4.8 µm above f11 starts to show difraction, while Nikon D4 with pixel 7.3 µm shows difraction above f16.

Cambridgeincolour.com  Lens Diffraction and other popular tutorials, using camera equipment, photo techniques, etc.  Airy disks resolved

Cambridgeincolour.com Lens Diffraction and other popular tutorials, using camera equipment, photo techniques, etc. Airy disks resolved

Diffraction Limited Photography: Pixel Size, Aperture and Airy Disks

Diffraction Limited Photography: Pixel Size, Aperture and Airy Disks

Weekly Wednesday Update — Jill Symons - JillSymons.com Lampwork Rounds N Wheelies - $95  Light and airy glass disks, thin 1.5mm and tall allows the light to filter through and the color to come alive!  Denim blue, pale lavender and clear.  sizes range from 5/8-3/4" dia on the disks, and 3/8" on the small rounds.  All with 1/16" mandrel holes.

Weekly Wednesday Update — Jill Symons - JillSymons.com Lampwork Rounds N Wheelies - $95 Light and airy glass disks, thin 1.5mm and tall allows the light to filter through and the color to come alive! Denim blue, pale lavender and clear. sizes range from 5/8-3/4" dia on the disks, and 3/8" on the small rounds. All with 1/16" mandrel holes.

Pinterest • The world’s catalogue of ideas
Search