#atoptics — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #atoptics, aggregated by home.social.
-
-
Saw a pretty good Sun Dog today. Hard to photograph as the sun was very bright and still pretty high above the horizon. Very distinct false suns to both the left and right.
-
"O, learn'd indeed were that astronomer
That knew the stars as I his characters;"
- #ShakespeareSunday, CymbelineApproximately 765 kpc (2.5 million light-years) from Earth and the nearest major galaxy to the Milky Way, this is the Andromeda Galaxy (aka M 31 / NGC 224) with its "companion" galaxies M 32 and M 110.
Imaged from Fife, #Scotland using a Zwo SeeStar S30 smart telescope, during the night of 16th - 17th August 2025.
-
This morning's noctilucent cloud.
02:42 to 03:08, Fife in eastern #Scotland.
-
@Natasha_Jay With how bright and low that is to the horizon, I'm inclined to think that it might be a rainbow. A CHA would get fainter and fainter as the Sun approaches the altitude of 58°, after which the halo can no longer form. Still a very striking photo. Perfect timing with the Sun and the rain in just the right places! #atoptics
-
Whorled
M31 (Messier 31 and NGC 224) also commonly known as the Andromeda Galaxy, the nearest major galaxy to our Milky Way. Two satellite galaxies are also in the frame, M32 (Messier 32 and NGC 221) is on the left and M110 (Messier 110 and NGC 205) is on the right.
Taken from Fife in eastern #Scotland, February 27th 2025 at 20:15.
-
Thank you all so much for your kind birthday wishes! So much genuine affection, I have a little tear in my eye now.
Or perhaps that's just the hangover... 😆I had a lovely day with lots of phone calls, plenty of laughter and good company. What more could I possibly ask for?
My friends are still here so I must be away and make breakfast.
I leave you with a photo of the #aurora, a lovely image for a lovely bunch of people!
-
Night Shining
3am. Sometimes, insomnia is useful.
#Noctilucent clouds (NLCs) are made of water ice crystals that form below -120°C (-184°F) and at ≈ 76-85km (47-53mi), the highest clouds in our atmosphere.
NLCs are only visible during twilight and usually summer from latitudes of ±50° and ±70°, and when the lower atmosphere are in Earth's shadow but these clouds are in sunlight.
Text derived from https://en.wikipedia.org/wiki/Noctilucent_cloud
-
PSCs
Nacreous or polar stratospheric clouds form in the winter stratosphere, at altitudes of 15 to 25 km (9 to15.5 miles) and at very low temperatures below −78 °C (−108 °F)
They are seen in winter when the sun is below the horizon, shining brightly well before dawn or after dusk.
This type of PSC is composed of super-cooled ice crystals which are not harmful to the atmosphere.These were seen from my bedroom window in December last year.
-
@SilverRainbow great photo! I think it would be cool to get an #AtOptics (for atmospheric optics) hashtag going on fedi. There's a subreddit with the name and it's one of my favorites
-
Superb Halo
8:30 am in late March and, through my bedroom window, an icy sky and the rising sun combined to create this lovely spectacle.
As well as a 22° halo (the circle around the sun) this strong display is also showing a sundog (22° parhelion) on each side of the sun, a parhelic circle (crossing the circle and passing through both sundog spots,) an upper tangent arc (at the top of the circle,) and a sun pillar (going up from the sun.) -
-
Nebensonne und Teil des Horizontalkreises, gestern für wenige Minuten sichtbar.
“Sun dog” (parhelion) and part of the parhelic circle could be seen yesterday for just a few minutes.
#Nebensonne #Horizontalkreis #Parhelion #ParheicCircle #Halos #Nature #NaturePhotography #Natur #Naturfotografie #AtOptics #AtmosphericOptics #AtmosphärischeOptik
-
Nebensonne und Teil des Horizontalkreises, gestern für wenige Minuten sichtbar.
“Sun dog” (parhelion) and part of the parhelic circle could be seen yesterday for just a few minutes.
#Nebensonne #Horizontalkreis #Parhelion #ParheicCircle #Halos #Nature #NaturePhotography #Natur #Naturfotografie #AtOptics #AtmosphericOptics #AtmosphärischeOptik
-
Nebensonne und Teil des Horizontalkreises, gestern für wenige Minuten sichtbar.
“Sun dog” (parhelion) and part of the parhelic circle could be seen yesterday for just a few minutes.
#Nebensonne #Horizontalkreis #Parhelion #ParheicCircle #Halos #Nature #NaturePhotography #Natur #Naturfotografie #AtOptics #AtmosphericOptics #AtmosphärischeOptik
-
Nebensonne und Teil des Horizontalkreises, gestern für wenige Minuten sichtbar.
“Sun dog” (parhelion) and part of the parhelic circle could be seen yesterday for just a few minutes.
#Nebensonne #Horizontalkreis #Parhelion #ParheicCircle #Halos #Nature #NaturePhotography #Natur #Naturfotografie #AtOptics #AtmosphericOptics #AtmosphärischeOptik
-
Nebensonne und Teil des Horizontalkreises, gestern für wenige Minuten sichtbar.
“Sun dog” (parhelion) and part of the parhelic circle could be seen yesterday for just a few minutes.
#Nebensonne #Horizontalkreis #Parhelion #ParheicCircle #Halos #Nature #NaturePhotography #Natur #Naturfotografie #AtOptics #AtmosphericOptics #AtmosphärischeOptik
-
A 22 degree halo and a parhelic circle in Eastern Oregon photographed by my parents
The offset circle is exceptionally rare. As far as I know this is one of, at most, a couple dozen photos of a complete parhelic circle ever taken
-
A 22 degree halo and a parhelic circle in Eastern Oregon photographed by my parents
The offset circle is exceptionally rare. As far as I know this is one of, at most, a couple dozen photos of a complete parhelic circle ever taken
-
A 22 degree halo and a parhelic circle in Eastern Oregon photographed by my parents
The offset circle is exceptionally rare. As far as I know this is one of, at most, a couple dozen photos of a complete parhelic circle ever taken
-
A 22 degree halo and a parhelic circle in Eastern Oregon photographed by my parents
The offset circle is exceptionally rare. As far as I know this is one of, at most, a couple dozen photos of a complete parhelic circle ever taken
-
A 22 degree halo and a parhelic circle in Eastern Oregon photographed by my parents
The offset circle is exceptionally rare. As far as I know this is one of, at most, a couple dozen photos of a complete parhelic circle ever taken
-
Saw a 22° Halo and a circumhorizontal arc today at the kid's elementary school track and field day
#atoptics
