Andy Casely
@deep-twilight.bsky.social
Planetary imager for fun, earth extreme weather for work, I like trail running, wild places, cool images, relaxing with cricket. Blue Mtns 🇦🇺
🪐 APOTY shortlist x6 (2019 planets win)
☀️ Malin awards wins 2021, 2024 (x2)
🚀 APOD x2
🪐 APOTY shortlist x6 (2019 planets win)
☀️ Malin awards wins 2021, 2024 (x2)
🚀 APOD x2
Three galaxies, aurora, mountains and clouds
A timelapse from a recent trip to Glenorchy, NZ - beautiful dark skies and plenty to look at, with clouds bubbling off the Humboldt Range, broken enough to see the southern lights below the Milky Way and Magellanic Clouds. EOS6Dii, 228 frames, 20s each
A timelapse from a recent trip to Glenorchy, NZ - beautiful dark skies and plenty to look at, with clouds bubbling off the Humboldt Range, broken enough to see the southern lights below the Milky Way and Magellanic Clouds. EOS6Dii, 228 frames, 20s each
September 24, 2025 at 11:37 PM
Three galaxies, aurora, mountains and clouds
A timelapse from a recent trip to Glenorchy, NZ - beautiful dark skies and plenty to look at, with clouds bubbling off the Humboldt Range, broken enough to see the southern lights below the Milky Way and Magellanic Clouds. EOS6Dii, 228 frames, 20s each
A timelapse from a recent trip to Glenorchy, NZ - beautiful dark skies and plenty to look at, with clouds bubbling off the Humboldt Range, broken enough to see the southern lights below the Milky Way and Magellanic Clouds. EOS6Dii, 228 frames, 20s each
Two comets and Mars, 21st Sept
C/2025 R2 (SWAN) is keeping pace with Mars, and fainter C/2025 K1 (ATLAS) is descending towards the Sun. Processing was interesting, correcting for three moving objects against the twilight starfield. Tonight, the Moon joins the party!
EOS 6Dii, 35x1min, 300mm @ f/5.
C/2025 R2 (SWAN) is keeping pace with Mars, and fainter C/2025 K1 (ATLAS) is descending towards the Sun. Processing was interesting, correcting for three moving objects against the twilight starfield. Tonight, the Moon joins the party!
EOS 6Dii, 35x1min, 300mm @ f/5.
September 24, 2025 at 5:12 AM
Two comets and Mars, 21st Sept
C/2025 R2 (SWAN) is keeping pace with Mars, and fainter C/2025 K1 (ATLAS) is descending towards the Sun. Processing was interesting, correcting for three moving objects against the twilight starfield. Tonight, the Moon joins the party!
EOS 6Dii, 35x1min, 300mm @ f/5.
C/2025 R2 (SWAN) is keeping pace with Mars, and fainter C/2025 K1 (ATLAS) is descending towards the Sun. Processing was interesting, correcting for three moving objects against the twilight starfield. Tonight, the Moon joins the party!
EOS 6Dii, 35x1min, 300mm @ f/5.
A Galactic frame of reference
What's your point of view? Does the Milky Way set, or does the Earth just get in the way? Been wanting to do this one for a while! ~6hrs, 30s per frame, EOS6Dii, Star Adventurer, Sigma 14-24mm. Processed in PixInsight & PS. #astrophotography #timelapse
What's your point of view? Does the Milky Way set, or does the Earth just get in the way? Been wanting to do this one for a while! ~6hrs, 30s per frame, EOS6Dii, Star Adventurer, Sigma 14-24mm. Processed in PixInsight & PS. #astrophotography #timelapse
September 13, 2025 at 5:16 AM
A Galactic frame of reference
What's your point of view? Does the Milky Way set, or does the Earth just get in the way? Been wanting to do this one for a while! ~6hrs, 30s per frame, EOS6Dii, Star Adventurer, Sigma 14-24mm. Processed in PixInsight & PS. #astrophotography #timelapse
What's your point of view? Does the Milky Way set, or does the Earth just get in the way? Been wanting to do this one for a while! ~6hrs, 30s per frame, EOS6Dii, Star Adventurer, Sigma 14-24mm. Processed in PixInsight & PS. #astrophotography #timelapse
Waxing Moon, 3rd Sept
I was playing with camera focus and focal length points on the C14 - 585MM + focal reducer = 7 panel whole Moon mosaic, The full-size processed image is 90 megapixels. Hello, nearest neighbour! Full res view here: photos.app.goo.gl/J5pR2DJYiwrq...
I was playing with camera focus and focal length points on the C14 - 585MM + focal reducer = 7 panel whole Moon mosaic, The full-size processed image is 90 megapixels. Hello, nearest neighbour! Full res view here: photos.app.goo.gl/J5pR2DJYiwrq...
September 10, 2025 at 9:02 AM
Waxing Moon, 3rd Sept
I was playing with camera focus and focal length points on the C14 - 585MM + focal reducer = 7 panel whole Moon mosaic, The full-size processed image is 90 megapixels. Hello, nearest neighbour! Full res view here: photos.app.goo.gl/J5pR2DJYiwrq...
I was playing with camera focus and focal length points on the C14 - 585MM + focal reducer = 7 panel whole Moon mosaic, The full-size processed image is 90 megapixels. Hello, nearest neighbour! Full res view here: photos.app.goo.gl/J5pR2DJYiwrq...
A dusty MIlky Way snap from a short break at Turon Gates, NSW. 29x90s, EOS 6Dii @24mm, Star Adventurer, good skies. Antares region is below centre. #astronomy #astrophotography
August 30, 2025 at 2:36 PM
A dusty MIlky Way snap from a short break at Turon Gates, NSW. 29x90s, EOS 6Dii @24mm, Star Adventurer, good skies. Antares region is below centre. #astronomy #astrophotography
You have been kidnapped and a character from the last tv show you watched is trying to rescue you. Who is coming to save you?
Chances of survival... slim
Chances of survival... slim
June 12, 2025 at 5:29 AM
You have been kidnapped and a character from the last tv show you watched is trying to rescue you. Who is coming to save you?
Chances of survival... slim
Chances of survival... slim
Dust storm this morning, everything a bit hazy. Our periodic reminder there's a lot of desert away out west!
May 26, 2025 at 9:44 PM
Dust storm this morning, everything a bit hazy. Our periodic reminder there's a lot of desert away out west!
Sunrise on Saturn's rings
3 images 3rd-8th May (UT) - rings reappearing through Saturn's equinox on the 6th. First image shows the Sun/Earth-facing outer edge only, likely basically the F ring! (brightest equinox ring in Cassini 2009 data) Last image has south face of the rings illuminated again.
3 images 3rd-8th May (UT) - rings reappearing through Saturn's equinox on the 6th. First image shows the Sun/Earth-facing outer edge only, likely basically the F ring! (brightest equinox ring in Cassini 2009 data) Last image has south face of the rings illuminated again.
May 9, 2025 at 5:05 AM
Sunrise on Saturn's rings
3 images 3rd-8th May (UT) - rings reappearing through Saturn's equinox on the 6th. First image shows the Sun/Earth-facing outer edge only, likely basically the F ring! (brightest equinox ring in Cassini 2009 data) Last image has south face of the rings illuminated again.
3 images 3rd-8th May (UT) - rings reappearing through Saturn's equinox on the 6th. First image shows the Sun/Earth-facing outer edge only, likely basically the F ring! (brightest equinox ring in Cassini 2009 data) Last image has south face of the rings illuminated again.
Hidden rings, 3rd May
You can see the rings in a longer-exposed, very heavily-stretched view! The ghostly rings are so faint just now that they are far outshone by 13.5mag Mimas (the fainter of the pair of moons on the left ansa). C14, ASI585MM, 6mins IR642nm. Sunrise on the rings is tomorrow...
You can see the rings in a longer-exposed, very heavily-stretched view! The ghostly rings are so faint just now that they are far outshone by 13.5mag Mimas (the fainter of the pair of moons on the left ansa). C14, ASI585MM, 6mins IR642nm. Sunrise on the rings is tomorrow...
May 5, 2025 at 12:01 PM
Hidden rings, 3rd May
You can see the rings in a longer-exposed, very heavily-stretched view! The ghostly rings are so faint just now that they are far outshone by 13.5mag Mimas (the fainter of the pair of moons on the left ansa). C14, ASI585MM, 6mins IR642nm. Sunrise on the rings is tomorrow...
You can see the rings in a longer-exposed, very heavily-stretched view! The ghostly rings are so faint just now that they are far outshone by 13.5mag Mimas (the fainter of the pair of moons on the left ansa). C14, ASI585MM, 6mins IR642nm. Sunrise on the rings is tomorrow...
Saturn, five moons, no rings
What a strange planet! Tomorrow is Saturn's equinox, a rare good look without its famous ring system, far too faint to see in a normally-exposed image, silhouetted against Saturn. Dione, Rhea, Mimas, Tethys and Enceladus too. C14, ASI585MM, 15mins, 3rd May 19:54UT.
What a strange planet! Tomorrow is Saturn's equinox, a rare good look without its famous ring system, far too faint to see in a normally-exposed image, silhouetted against Saturn. Dione, Rhea, Mimas, Tethys and Enceladus too. C14, ASI585MM, 15mins, 3rd May 19:54UT.
May 5, 2025 at 11:57 AM
Saturn, five moons, no rings
What a strange planet! Tomorrow is Saturn's equinox, a rare good look without its famous ring system, far too faint to see in a normally-exposed image, silhouetted against Saturn. Dione, Rhea, Mimas, Tethys and Enceladus too. C14, ASI585MM, 15mins, 3rd May 19:54UT.
What a strange planet! Tomorrow is Saturn's equinox, a rare good look without its famous ring system, far too faint to see in a normally-exposed image, silhouetted against Saturn. Dione, Rhea, Mimas, Tethys and Enceladus too. C14, ASI585MM, 15mins, 3rd May 19:54UT.
Saturn's hidden rings, 2nd May
A snap of the dark side of Saturn's rings, only four days before Saturn's equinox. The silhouette of darkened rings cuts across the planet, and the full extent of the very faint rings themselves are in an overexposed and strongly stretched version. #astrophotography
A snap of the dark side of Saturn's rings, only four days before Saturn's equinox. The silhouette of darkened rings cuts across the planet, and the full extent of the very faint rings themselves are in an overexposed and strongly stretched version. #astrophotography
May 3, 2025 at 9:12 AM
Saturn's hidden rings, 2nd May
A snap of the dark side of Saturn's rings, only four days before Saturn's equinox. The silhouette of darkened rings cuts across the planet, and the full extent of the very faint rings themselves are in an overexposed and strongly stretched version. #astrophotography
A snap of the dark side of Saturn's rings, only four days before Saturn's equinox. The silhouette of darkened rings cuts across the planet, and the full extent of the very faint rings themselves are in an overexposed and strongly stretched version. #astrophotography
A cloudy crescent
Venus on the morning of 13th April, lovely big thin crescent with the long horns from this hellish cloudy planet's atmosphere. Taken just after sunrise in good seeing. Celestron C14, QHY5III200M, 10mins data.
Venus on the morning of 13th April, lovely big thin crescent with the long horns from this hellish cloudy planet's atmosphere. Taken just after sunrise in good seeing. Celestron C14, QHY5III200M, 10mins data.
April 14, 2025 at 11:58 AM
A cloudy crescent
Venus on the morning of 13th April, lovely big thin crescent with the long horns from this hellish cloudy planet's atmosphere. Taken just after sunrise in good seeing. Celestron C14, QHY5III200M, 10mins data.
Venus on the morning of 13th April, lovely big thin crescent with the long horns from this hellish cloudy planet's atmosphere. Taken just after sunrise in good seeing. Celestron C14, QHY5III200M, 10mins data.
Ghosts of Saturn's Rings
Exploring Saturn's rare 'dark side', when the rings are pointed away from the Sun, but towards Earth, and extremely faint! Low in the morning sky, the rings are a dark band across the planet and barely visible in a stretched view. A ringless Saturn is fun! #astrophotography
Exploring Saturn's rare 'dark side', when the rings are pointed away from the Sun, but towards Earth, and extremely faint! Low in the morning sky, the rings are a dark band across the planet and barely visible in a stretched view. A ringless Saturn is fun! #astrophotography
April 13, 2025 at 8:15 AM
Ghosts of Saturn's Rings
Exploring Saturn's rare 'dark side', when the rings are pointed away from the Sun, but towards Earth, and extremely faint! Low in the morning sky, the rings are a dark band across the planet and barely visible in a stretched view. A ringless Saturn is fun! #astrophotography
Exploring Saturn's rare 'dark side', when the rings are pointed away from the Sun, but towards Earth, and extremely faint! Low in the morning sky, the rings are a dark band across the planet and barely visible in a stretched view. A ringless Saturn is fun! #astrophotography
Plasma trees
Another little Sun set from last week, a couple of bright prominences, one on the limb, one a bit beyond the limb pouring material sideways. Both gone within 24 hours, even though they looked very stable. 50 minutes, 66 frames timelapse, Evostar 100, Quark CS, ASI174MM #astrophotography
Another little Sun set from last week, a couple of bright prominences, one on the limb, one a bit beyond the limb pouring material sideways. Both gone within 24 hours, even though they looked very stable. 50 minutes, 66 frames timelapse, Evostar 100, Quark CS, ASI174MM #astrophotography
March 27, 2025 at 11:05 AM
Plasma trees
Another little Sun set from last week, a couple of bright prominences, one on the limb, one a bit beyond the limb pouring material sideways. Both gone within 24 hours, even though they looked very stable. 50 minutes, 66 frames timelapse, Evostar 100, Quark CS, ASI174MM #astrophotography
Another little Sun set from last week, a couple of bright prominences, one on the limb, one a bit beyond the limb pouring material sideways. Both gone within 24 hours, even though they looked very stable. 50 minutes, 66 frames timelapse, Evostar 100, Quark CS, ASI174MM #astrophotography
Leap to (from) the stars!
80-min timelapse 15th March, a bright prominence detaching and accelerating to escape the Sun at up to 170km/s, 250,000km high by the end. I had to re-frame it as it got higher. 96 frames, 15s video per frame. Evostar 100, Quark CS, ASI174MM. #astrophotography
80-min timelapse 15th March, a bright prominence detaching and accelerating to escape the Sun at up to 170km/s, 250,000km high by the end. I had to re-frame it as it got higher. 96 frames, 15s video per frame. Evostar 100, Quark CS, ASI174MM. #astrophotography
March 27, 2025 at 10:59 AM
Leap to (from) the stars!
80-min timelapse 15th March, a bright prominence detaching and accelerating to escape the Sun at up to 170km/s, 250,000km high by the end. I had to re-frame it as it got higher. 96 frames, 15s video per frame. Evostar 100, Quark CS, ASI174MM. #astrophotography
80-min timelapse 15th March, a bright prominence detaching and accelerating to escape the Sun at up to 170km/s, 250,000km high by the end. I had to re-frame it as it got higher. 96 frames, 15s video per frame. Evostar 100, Quark CS, ASI174MM. #astrophotography
In a vain attempt at a feed palate-cleanse, here's a Sun shot Sun from Saturday. I took a 100-frame timelapse of a big detaching prominence, this frame caught my eye - faerie, angelic, Icarus perhaps? Headless, in any case! Timelapse to follow. Enjoy 😊☀️
#astrophotography #solarsystem #solarmaximum
#astrophotography #solarsystem #solarmaximum
March 18, 2025 at 2:37 AM
In a vain attempt at a feed palate-cleanse, here's a Sun shot Sun from Saturday. I took a 100-frame timelapse of a big detaching prominence, this frame caught my eye - faerie, angelic, Icarus perhaps? Headless, in any case! Timelapse to follow. Enjoy 😊☀️
#astrophotography #solarsystem #solarmaximum
#astrophotography #solarsystem #solarmaximum
Or a cricket pitch heavy roller?
February 6, 2025 at 4:45 AM
Or a cricket pitch heavy roller?
Yes, that looks like the first outbreak rotating into view, you can check the longitude for that date using the following maps, expertly made by Shinji Mizumoto and usually available at the following link: alpo-j.sakura.ne.jp/Latest/j_Cyl...
January 30, 2025 at 5:03 AM
Yes, that looks like the first outbreak rotating into view, you can check the longitude for that date using the following maps, expertly made by Shinji Mizumoto and usually available at the following link: alpo-j.sakura.ne.jp/Latest/j_Cyl...
Mars, 21st Jan
Likely to be my opposition 'portrait' for 2025 - Mars at a v low opposition in Gemini, barely over our roof. Quite fuzzy even in decent seeing. The Valles Marineris is to the lower right, some blue limb clouds, but no sign of Olympus Mons or Tharsis volcanoes. #astrophotography #mars
Likely to be my opposition 'portrait' for 2025 - Mars at a v low opposition in Gemini, barely over our roof. Quite fuzzy even in decent seeing. The Valles Marineris is to the lower right, some blue limb clouds, but no sign of Olympus Mons or Tharsis volcanoes. #astrophotography #mars
January 25, 2025 at 4:09 AM
Mars, 21st Jan
Likely to be my opposition 'portrait' for 2025 - Mars at a v low opposition in Gemini, barely over our roof. Quite fuzzy even in decent seeing. The Valles Marineris is to the lower right, some blue limb clouds, but no sign of Olympus Mons or Tharsis volcanoes. #astrophotography #mars
Likely to be my opposition 'portrait' for 2025 - Mars at a v low opposition in Gemini, barely over our roof. Quite fuzzy even in decent seeing. The Valles Marineris is to the lower right, some blue limb clouds, but no sign of Olympus Mons or Tharsis volcanoes. #astrophotography #mars
With all the shit news around, it's hard to focus on nice things and positive science rn. But here is Jupiter in infrared and methane band filters last night. The new NTBs outbreak is just setting on the upper-right limb. Nice seeing for the low altitude too. #Jupiter #astrophotography
January 21, 2025 at 10:03 PM
With all the shit news around, it's hard to focus on nice things and positive science rn. But here is Jupiter in infrared and methane band filters last night. The new NTBs outbreak is just setting on the upper-right limb. Nice seeing for the low altitude too. #Jupiter #astrophotography
Comet C/2024 G3 (ATLAS) at high noon!
A lunchtime comet chase of a rare "daytime comet"
100mm scope and DSLR, 5x 1/100s, 8deg from the Sun, garage door protecting optics, Sun almost overhead. Maybe near venus-bright, ~3arcmin tail. Nearest thing I've ever imaged to the Sun...
A lunchtime comet chase of a rare "daytime comet"
100mm scope and DSLR, 5x 1/100s, 8deg from the Sun, garage door protecting optics, Sun almost overhead. Maybe near venus-bright, ~3arcmin tail. Nearest thing I've ever imaged to the Sun...
January 15, 2025 at 10:31 AM
Comet C/2024 G3 (ATLAS) at high noon!
A lunchtime comet chase of a rare "daytime comet"
100mm scope and DSLR, 5x 1/100s, 8deg from the Sun, garage door protecting optics, Sun almost overhead. Maybe near venus-bright, ~3arcmin tail. Nearest thing I've ever imaged to the Sun...
A lunchtime comet chase of a rare "daytime comet"
100mm scope and DSLR, 5x 1/100s, 8deg from the Sun, garage door protecting optics, Sun almost overhead. Maybe near venus-bright, ~3arcmin tail. Nearest thing I've ever imaged to the Sun...
Most satisfying was making maps of the events, including this one from four images taken across five hous on 15th Sept 2020 later in the outbreak when three outbreaks and their turbulent tails wrapped all around the planet. Happy imaging the new outbreak, everyone! 4/4
January 13, 2025 at 9:45 PM
Most satisfying was making maps of the events, including this one from four images taken across five hous on 15th Sept 2020 later in the outbreak when three outbreaks and their turbulent tails wrapped all around the planet. Happy imaging the new outbreak, everyone! 4/4
I took dozens of images during the last outbreak, a period of good seeing gave me my first APOD image (colour) showing the development of the 'tail' of the first storm while the Red Spot and Oval BA passed each other. An APY image (methane) had a sequence of the activity #3/4
January 13, 2025 at 9:45 PM
I took dozens of images during the last outbreak, a period of good seeing gave me my first APOD image (colour) showing the development of the 'tail' of the first storm while the Red Spot and Oval BA passed each other. An APY image (methane) had a sequence of the activity #3/4
For amateur #astrophotography it's a great time to image Jupiter, as the storms are bright in both visible and methane-band images, and there are likely to be new outbreaks in coming weeks as the first develops. I got the first image of outbreak 3 in 2020, lucky to catch it as it barely appeared 2/4
January 13, 2025 at 9:45 PM
For amateur #astrophotography it's a great time to image Jupiter, as the storms are bright in both visible and methane-band images, and there are likely to be new outbreaks in coming weeks as the first develops. I got the first image of outbreak 3 in 2020, lucky to catch it as it barely appeared 2/4
Jupiter, 28th Dec
A long time since I took your picture, old friend! Harder to image in 2024-25 from here (near Sydney)- the planet is low; summer evenings have heat shimmer in the air. But some Jovian photons for you! Oval BA is past the meridian, methane band shows high clouds. #astrophotography
A long time since I took your picture, old friend! Harder to image in 2024-25 from here (near Sydney)- the planet is low; summer evenings have heat shimmer in the air. But some Jovian photons for you! Oval BA is past the meridian, methane band shows high clouds. #astrophotography
December 31, 2024 at 6:22 AM
Jupiter, 28th Dec
A long time since I took your picture, old friend! Harder to image in 2024-25 from here (near Sydney)- the planet is low; summer evenings have heat shimmer in the air. But some Jovian photons for you! Oval BA is past the meridian, methane band shows high clouds. #astrophotography
A long time since I took your picture, old friend! Harder to image in 2024-25 from here (near Sydney)- the planet is low; summer evenings have heat shimmer in the air. But some Jovian photons for you! Oval BA is past the meridian, methane band shows high clouds. #astrophotography