#Photosphere
LightNews LightNews
ma.lloc.ca
My pet bug has been fixed, you can now remotely command Deadlock take a screenshot at a specific position/direction.

Now it should be pretty easy to make a photosphere...

forums.playdeadlock.com/threads/cons...
Console command "setpos" doesn't set camera angle
setpos/setpos_exact seem to have parameters for angles but only their positions are considered. getpos/getpos_exact return angles but they cant be used. As a result there's no way to set the camera t...
forums.playdeadlock.com
September 30, 2026 at 6:55 PM
nasadailypicbot.bsky.social
NASA Astronomy Hourly Picture - 2013-11-15: The Flash Spectrum of the Sun
#Astronomy #NASA #Space
In a flash, the visible spectrum of the Sun changed from absorption to emission on November 3rd, during the brief total phase of a solar eclipse. That fleeting moment is captured by telephoto lens and diffraction grating in this well-timed image from clearing skies over Gabon in equatorial Africa. With overwhelming light from the Sun's disk blocked by the Moon, the normally dominant absorption spectrum of the solar photosphere is hidden. What remains, spread by the diffraction grating into the spectrum of colors to the right of the eclipsed Sun, are individual eclipse images at each wavelength of light emitted by atoms along the thin arc of the solar chromosphere. The brightest images, or strongest chromospheric emission lines, are due to Hydrogen atoms that produce the red hydrogen alpha emission at the far right and blue hydrogen beta emission to the left. In between, the bright yellow emission image is caused by atoms of Helium, an element only first discovered in the flash spectrum of the Sun.
September 29, 2026 at 12:20 PM
starcourier.bsky.social
[2609.34705] Akie Moritsuka et al.: Doppler Velocity Variation near the Solar Limb in the Solar Photosphere Observed with Hinode. link
September 29, 2026 at 10:09 AM
astroarxiv.bsky.social
Doppler Velocity Variation near the Solar Limb in the Solar Photosphere Observed with Hinode. Akie Moritsuka et. al. https://arxiv.org/abs/2609.34705
Figure 1 Figure 2 Figure 3 Figure 4
September 29, 2026 at 8:55 AM
astroarxiv.bsky.social
A First Global Full-Vector Coronal Magnetic Field Inference Using MLSO CoMP and UCoMP Observations. Alin Razvan Paraschiv et. al. https://arxiv.org/abs/2609.35100
To invert vector magnetic fields from an emitting coronal plasma pixel, at an apparent height $h$ above the photosphere, we require two inputs: Stokes $IQU$ observations [see ][]{par+judge2022
September 29, 2026 at 8:39 AM
krxiv-astro-ph.bsky.social
Doppler Velocity Variation near the Solar Limb in the Solar Photosphere Observed with Hinode
https://arxiv.org/pdf/2609.34705
Akie Moritsuka, Yukio Katsukawa, Ryohtaroh T. Ishikawa.
https://arxiv.org/abs/2609.34705
arXiv abstract link
arxiv.org
September 29, 2026 at 7:32 AM
astrophsr-bot.bsky.social
Akie Moritsuka, Yukio Katsukawa, Ryohtaroh T. Ishikawa: Doppler Velocity Variation near the Solar Limb in the Solar Photosphere Observed with Hinode https://arxiv.org/abs/2609.34705 https://arxiv.org/pdf/2609.34705 https://arxiv.org/html/2609.34705
September 29, 2026 at 6:52 AM
astrochara.bsky.social
Altair is a nearby A-type star. It is also one of the hottest nearby stars with X-ray emission, probably arising from corona around its equatorial regions, where convective envelope which sustain them persist on this highly oblate star.

#art #astronomy #space #spaceart #star #Altair
This artwork depicts a fictional view of Altair's corona seen with SDO AIA camera's 171 Å channel, accompanied by some information. At the centre is the star; the photosphere is entirely dark, and the corona can be seen as a faint band ringing the star's equator and intermediate latitudes, while the visible pole is dark. The corona is depicted as slightly heterogenous, with dark patches and bright spots scattered across it. At top left is basic information about Altair (α Aql): mass of 1.86 ± 0.03 Solar masses, radii of 2.008 ± 0.006 Solar radii (equator) / 1.565 ± 0.014 Solar radii (pole), effective temperature of 6780 K (equator) / 8621 K (pole), and rotation period of 7.79 hours. Top right contains my summary of Altair's coronal properties obtained from Robrade & Schmitt (2009). The coronal surface flux is comparable to solar background corona, the plasma temperature is similar to low activity stars like the Sun and is dominated by quiescent/weakly active regions and open magnetic fields with weak contributions from moderately active regions, and that the coronal structures are small (few %) relative to the star. Altair's X-ray flux varies, arising from both rotational modulation, as well as intrinsic variabilities, eg. emergence and decay of active regions. Flares are not detected, as expected. Same as previous image, although Altair's limb and equator are outlined as solid line and dashed line, respectively.
September 28, 2026 at 3:19 PM
morchellandmath.bsky.social
After reading (and conclusion)
-
Rampant speculation on the subject can lead to entertainment, or more confusion whereas more research on the matter ALSO leads to more confusion and if you don’t get your facts straight also ridicule.

Good times.
The Sun is a close real-world example of the blackbody radiation Einstein studied. Its visible surface, the photosphere, is about 5,500°C (roughly 5,800 K), and the light it emits closely matches the spectrum of an ideal blackbody at that temperature, peaking in the visible range, which is part of why our eyes evolved to see those wavelengths. In Einstein's picture, that sunlight is a vast stream of photons, each with energy set by its frequency. When those photons reach Earth, they can knock electrons loose in exactly the way his photoelectric theory describes, which is the basic principle behind solar panels. Deeper inside, the Sun behaves even more like the "gas of light" Einstein imagined. Nuclear fusion in the core, at about 15 million K, produces high-energy gamma-ray photons. The interior is so dense that these photons are constantly absorbed and re-emitted by the plasma, bouncing in a random zigzag through the radiative zone. Estimates for how long the energy takes to escape range from thousands to hundreds of thousands of years. Along the way, the energy is repeatedly reprocessed into lower-energy photons, and in the outer layers convection carries it the rest of the way to the surface. The photons also exert real pressure as a kind of photon gas, and that radiation pressure helps hold the Sun up against its own gravity.
September 28, 2026 at 2:21 PM
nasadailypicbot.bsky.social
NASA Astronomy Hourly Picture - 2023-01-14: Perihelion Sun 2023
#Astronomy #NASA #Space
Perihelion for 2023, Earth's closest approach to the Sun, was on January 4 at 16:17 UTC. That was less than 24 hours after this sharp image of the Sun's disk was recorded with telescope and H-alpha filter from Sydney, Australia, planet Earth. An H-alpha filter transmits a characteristic red light from hydrogen atoms. In views of the Sun it emphasizes the Sun's chromosphere, a region just above the solar photosphere or normally visible solar surface. In this H-alpha image of the increasingly active Sun planet-sized sunspot regions are dominated by bright splotches called plages. Dark filaments of plasma snaking across the solar disk transition to bright prominences when seen above the solar limb.
September 28, 2026 at 8:20 AM
imtechboss.bsky.social
⚡ How to download and install GCAM (Google Camera) on Redmi Note 8/Pro

Installing GCam for Redmi Note 8 Pro Google camera mode Night Sight PhotoSphere Photobooth Slow Motion RAW support...

👉 Full Story: https://imtechboss.com/post.html?id=blogger-916
#Tech #General #TechBoss
How to download and install GCAM (Google Camera) on Redmi Note 8/Pro
Installing GCam for Redmi Note 8 Pro Google camera mode Night Sight PhotoSphere Photobooth Slow Motion RAW support HDR+ Motion Panorama Lens Blur Google Lens Portrait What's not wo
imtechboss.com
September 27, 2026 at 12:52 PM
michael-w-busch.bsky.social
@sondy.com did the experiment by baking pieces of various carbonaceous chondrites in an oven: arxiv.org/abs/1810.04154
Thermal Alteration of Labile Elements in Carbonaceous Chondrites
Carbonaceous chondrite meteorites are some of the oldest Solar System planetary materials available for study. The CI group has bulk abundances of elements similar to those of the solar photosphere. O...
arxiv.org
September 27, 2026 at 2:49 AM
greyrabbit.bsky.social
“After several attempts, a perfect opportunity eventually arose,” says award-winning astrophotographer on his super-detailed shot of Sun’s surface | Digital Camera World share.google/X6XnoNt5Sw2q...
“After several attempts, a perfect opportunity eventually arose,” says award-winning astrophotographer on his super-detailed shot of Sun’s surface
Portuguese astrophotographer Miguel Claro used a high-powered telescope and camera to capture a close-up frame of writhing plasma on the Sun’s photosphere
share.google
September 26, 2026 at 5:52 PM
digitalcameraworld.com.web.brid.gy
“After several attempts, a perfect opportunity eventually arose,” says award-winning astrophotographer on his super-detailed shot of Sun’s surface
Portuguese astrophotographer Miguel Claro used a high-powered telescope and camera to capture a close-up frame of writhing plasma on the Sun’s photosphere
www.digitalcameraworld.com
September 26, 2026 at 2:46 PM
astrotob.bsky.social
Sun photosphere 2026-05-11
#sun #astronomy #photosphere
Sun photosphere 2026-05-11 Sun photosphere 2026-05-11
September 25, 2026 at 12:29 PM
astroarxiv.bsky.social
Tomography analysis of the intermediate-luminosity Type Iax SN 2024pxl. Barnabás Barna et. al. https://arxiv.org/abs/2609.28712
Early spectral evolution of SN 2024pxl (grey) fitted with the TARDIS synthetic spectra (red) of the the abundance tomography analysis. The unambiguous identification of spectral features based on the TARDIS photon packet statistics are marked with dashed lines. TARDIS spectra calculated by assumi... Late spectral evolution of SN 2024pxl (grey) fitted with the TARDIS synthetic spectra (red) of the the abundance tomography analysis. The comparison of early spectral evolution of SN 2024pxl (red) with that of a less luminous SNe 2019muj and 2022xlp [][magenta and green, respectively]{Barna21a,Banhidi25 The assumed density function of the best-matching TARDIS model for SN 2024pxl (red). The density structures of the pure deflagration models with similar peak abosulte magnitudes as SN 2024pxl are also plotted for comparison. The vertical lines show the velocity of the photosphere at the studied e...
September 25, 2026 at 6:39 AM
astroarxiv.bsky.social
Impact of accretion variability on the CO emission of a disk around a very-low-mass star with JWST. C. Bergez-Casalou et. al. https://arxiv.org/abs/2609.24329
Figure 1 Schematic summary of the global view of J1605. The NIRSpec wavelength range covers the stellar photosphere, emission of the inner rim and the emission from the hottest part of the inner disk, while MIRI's wavelength range allows us to cover the emission from colder parts of the inner disk. The ye... Figure 3 Figure 4
September 22, 2026 at 7:34 AM
spdustin.com
And those photons had to bounce around for 100,000 years (or more!) inside the Sun, getting absorbed and re-emitted by every atom they hit...before smacking into a hydrogen atom in the photosphere and triggering the photon that (finally!) screams through space in 8 minutes to land on your film.
September 22, 2026 at 5:41 AM
koemgun.bsky.social
C'est une image de la surface du soleil non ? Genre la chromosphère ? Photosphère ? (j'ai du checké wikipedia, ma premiere intuition c'etait chronosphere mais c'est pas red alert ! :P )
September 21, 2026 at 9:34 AM
pauleric70.bsky.social
A Cosmic Giant: Would the Solar System Fit Inside the Star Stephenson 2-18? 🌌

Stephenson 2-18 is one of the largest known hypergiants in the universe. If this colossal star were placed at the center of our Solar System, its photosphere would engulf not only Earth and Mars but also
September 20, 2026 at 7:17 AM
harucross.bsky.social
Buenos días Bluesky!
I was surprised when I hopped onto VRChat and saw a photogrammetry world based on Ogijima's iconic lighthouse.
The first picture features the photosphere I use on SteamVR, so it was like being able to explore it 🤣
World: vrchat.com/home/world/w...
#VRChatPhotography
September 19, 2026 at 12:15 PM
astroarxiv.bsky.social
Detectability of 100 TeV Gamma Rays from PeV Cosmic Rays Accelerated in the Early Phase of a Supernova Shock Wave. Tomotaka Nishikawa et. al. https://arxiv.org/abs/2609.18226
Geometry of gamma-ray propagation and attenuation in a SNR at time $t$ after the core-collapse event. The inner black circle represents the SN photosphere with radius $R_{ Same as Figure~ {fig:Time-flux_Ino_con_100TeV Density spectra of soft photons from blackbody emission from the photosphere (BB) and thermal bremsstrahlung from the CSM (BS) at the interaction point P. The horizontal axis represents photon energy, and the vertical axis represents photon number density. The color gradient indicates t... Time evolution of the total CR energy $E_{ , tot
September 18, 2026 at 4:02 AM
drnereide.bsky.social
Usually, just before or after totality, the last ray of the photosphere slips through a single valley on the Moon's edge and makes one bright point.

Here you see two.

It's a particular case of Baily's beads: sunlight filtering through valleys on the lunar limb at second and third contact.
September 15, 2026 at 5:56 PM
astrotob.bsky.social
Sun photosphere 2026-05-08
#sun #astronomy #photosphere
Sun photosphere 2026-05-08 Sun photosphere 2026-05-08
September 15, 2026 at 3:13 PM
astroarxiv.bsky.social
Observable Signatures of Supernova Shock Breakout in Confined Circumstellar Medium. Wun-Yi Chen et. al. https://arxiv.org/abs/2609.13540
Density distributions overlaid with radial-velocity contours for all models. From left to right, the columns show the pre-breakout phase, peak luminosity, and post-peak phase. The pink contour marks the photosphere as seen by a distant observer. At peak luminosity, the velocity contours exhibit s... Snapshots of the gas and radiation energy-density distributions for model . Cyan and red vectors indicate the gas velocity and radiation flux, respectively. The inner and outer pink contours mark the optical-depth surfaces at $ =100$ and $ =2/3$. Rayleigh--Taylor instabilities are visible near ... Evolution of the SED for model . Colored curves represent distinct timing across the peak luminosity, circles mark peak flux wavelengths, and the black dashed curve indicates the trajectory of spectral peak evolution. Dotted and dashed lines show blackbody fits to the short-wavelength ($ \, { Left: Synthetic light curves for EP~WXT/FXT and ULTRASAT, together with the {He
September 15, 2026 at 6:41 AM