M31 is our neighbor in the ocean of the universe. I recently showed that my telescope can detect individual stars 2.5Mio LY away. Imaging the entire galaxy with the same telescope is more difficult. This #astrophotography with my #CelestonOrigin is a mosaic from 6 images, each 1h of exposure time.

Have you yet seen two lava fountains close to each other? Check this live cam from Kilauea: www.youtube.com/live/BqmpkUd...

Happy 120th birthday, special relativity! Albert Einstein introduced special relativity in the paper "On The Electrodynamics Of Moving Bodies," published in Annalen der Physik #OTD in 1905. 🧪 ⚛️ 🔭 Manuscript: onlinelibrary.wiley.com/doi/abs/10.1... English: www.fourmilab.ch/etexts/einst...

Constellation Cygnus hides a marvel of galactic nebulae. The Eastern Veil Nebula is part of a much larger remnant of a supernova that exploded around 8,000 years ago. This #astrophotography was created as a mosaic of two images taken with my #CelestronOrigin, each with an exposure time of one hour.

"The star that changed the size of the universe" was discovered in 1923 by Hubble on a plate taken with the 2.5m Hooker telescope. This variable Cepheid star proved that Andromeda is a far away galaxy like our own. Today, #astrophotography with my little #CelestronOrigin can show this star clearly.

Galaxies, Stars, and Dust #astronomy#astrophotography#apod

The star that expanded the universe was discovered by Edwin Hubble in 1923 with a 2.5m telescope. The Cepheid star V1 gave first prove that Andromeda is a galaxy outside our milkyway. Today, this #Astrophotography with my little #CelestronOrigin clearly shows this star in the gorgeous spiral of M31.

As an antidote to the constantly dreadful news, have some philosophical concepts:

About 8,000 years ago, a star exploded in the constellation Cygnus. Today, we can observe the faint remnants of this supernova as the "Veil Nebula". This astrophotography was composed of two 1h exposures taken with my @celestronuniverse.bsky.social‬ Origin telescope and developed in #Pixinsight.

A few thousand years ago, the star at the center of the Dumbbell Nebula (Messier 27) ejected its outer gas envelope at the end of its life, which it now illuminates from within. This #astrophotography was exposed for one hour near full moon with my #CelestronOrigin and developed in Pixinsight.

Two very different objects shine in this #astrophotography with my #CelestronOrigin. In Ring Nebula M57 in constellation Lyra, an ejected gas shell glows in the hard UV light of a 75000K hot dwarf star from 2300LY. The galaxy next to it (IC1296, 250Mio LY) is larger than our milkyway but very faint.

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Heute gelernt: Die physikalischen Einheiten-Vorsätze kommen zum Teil aus dem Dänischen. Femten als dänisches Wort für 15 wurde zur Vorsilbe "Femto", wobei z.B. ein Femtometer 10 hoch minus 15 Meter sind. Analog bei atten, dänisches Wort für 18, ein Attometer sind 10 hoch minus 18 Meter.

The Iris Nebula (NGC7023) bears its name because gas clouds reflect the bluish light of very hot neighboring stars. It is surrounded by molecular dust clouds with embedded brownish carbon compounds. This #astrophotography with my Celestron Origin was exposed for 160min and developed in Pixinsight.

The Presidents Budget Request for NASA is out. It’s a bloodbath Canceled are DAVINCI, VERITAS, Juno, OSIRIS-APEX, US participation in ExoMars and EnVision… Huge cut to R&A. No funding to begin development of the Uranus Orbiter. If you’ve ever cared about NASA, time to contact congress.

Not good news for gravitational-wave or multimessenger astronomy "In FY 2026 NSF will operate only one of the two [LIGO] sites and will support a reduced level for technology development" ☄️⚛️🧪🔭

Galaxy Messier 64 at a distance of 24Mio LY is also known as "Black-Eye Galaxy" because of its characteristically shaped dust band. This #astrophotography with my @celestronuniverse.bsky.social Origin telescope is based on an exposure time just under half an hour and was developed in #Pixinsight.

Ich hab mir gedacht, ich erkläre heute mal diese Kurven, die ich fast jeden Tag in meiner Tagesübersicht als Tweet 3/5 mitschicke. Abgesehen davon, dass sie sehr bunt sind, widerlegen sie nämlich einige weit verbreitete Vorurteile zum Stand der #Energiewende in Deutschland... 1/12

Galaxy M104 is also known as the “Sombrero Galaxy” because of its striking shape. With an exposure time of 140 minutes, this #astrophotography with my #Celestron #Origin shows numerous globular clusters in the galaxy's halo, structures in the dust disk and many faint galaxies in the background.

#apod 2025-05-07 Galaxy Wars: M81 versus M82 Image Credit: Collaborative Astrophotography Team (CAT) Web page: https://apod.nasa.gov/apod/ap250507.html#apod

The “Whirlpool Galaxy” M51, about 24Mio LY away, is subject to strong gravitational interactions with its companion galaxy. Countless stars are torn out of both galaxies and form extensive tidal tails. This #astrophotography image was made from 2.5h of data with my #Celestron #Origin in #Pixinsight.

Time for a late winter memory of my first deep sky object which I exposed for about 30 minutes with my #Celestron #Origin. The large Orion Nebula M42, birthplace for many new stars and planets, paints a fantastic landscape in the winter evening sky, where the eye can go for a walk. #astrophotography

Galaxy NGC 2403 "Mini Triangulum". 8 million light years away ! Shot from light polluted skies of east Leeds over the last two weeks of March. 16hrs 47mins of data used. #Astrophotography #Astronomy

In Globular star cluster M3, around 500,000 stars are crowding within just 125 light years. This #astrophotography image taken with my #Celestron #Origin lets you recognize a mixture of old, red giant stars and “blue stragglers”, which were formed by mass exchange or even mergers between two stars.

The Trump regime is now using US Attorneys to intimidate academic journals by sending them letters demanding they explain how they ensure ‘viewpoint diversity.’ Journal editors should be public about this and coordinate to refuse to comply with these fascist tactics.

Star cluster NGC2244 formed only a few million years ago from the gas of the Rosette Nebula, which it now stimulates to glow from within with its radiation. 30min exposure with my #Celestron #Origin reveal a variety of nebula knots from which stars are still forming today. #astrophotography

Did you know how much of the power generation capacity added each year world-wide was in renewables? 2022 it was 80 % 2023 it was 86 % 2024 it was 92,5 % Not because the whole world suddenly turned „woke“, but because it’s the cheapest!

On the anniversary of the sinking of the Titanic, we thought we'd answer a question that's often asked, "If they raised the Mary Rose, why not raise the Titanic?" Allow our scaled diagram to explain...

In the night of 10 to 11 April, asteroid (8) Flora passed over galaxy NGC 3628 (the ‘Hamburger Galaxy’), part of the Leo triplet. During the exposure of just over an hour with my #Celestron #Origin, the asteroid drew a small streak across the long axis of the galaxy. #astrophotography

Global trade news today and for the next few months

Yesterday's result of approx. 1h data with my #Celestron #Origin: the Flame Star Nebula IC405. Conditions were very bad for #astrophotography: the misty sky in my mid-town garden was bright from the moon and IC405 was not high above the horizon. The #Origin continues to surprise me, though!

Leo-1 is the most distant companion of the Milky Way at approx. 800,000LY. It resides only 12 arcminutes north of Regulus, which usually “drowns” the galaxy in its scattered light. Here, 100min worth of 10s subs from my #Celestron #Origin where stacked with a limiting magnitude of approx. 19mag.

🌙✨ Moon-Pleiades Conjunction 2025 ✨🌌 On April 1, 2025, a rare celestial encounter took place: The waxing crescent Moon passed close to the open star cluster Pleiades (M45) in the constellation Taurus. #MoonPleiades #Plejaden #M45 #Astrophotography #SpaceLovers #SkyEvent #Canonr6m2 #Pixinsight

Trump's foolishness has presented the perfect opportunity for cats and penguins to sign a trade deal - the fish will be ours!

The two centuries of America being the world's primary destination for foreign capital and investment is over.

April 2025, Sicherheitspolitische Situation in Europa, Symbolbild.

Improving the quality of star images is often neglected in the development of astrophotography images. Here is a detailed how-to for advanced image processing in #Pixinsight

Wir sollten uns angewöhnen, die EU-Kommissionspräsidentin als "Leader of the Free World" zu bezeichnen, wie man das früher in Amerika mit dem US-Präsidenten gemacht hat.

Still improving my abilities to make visible color and structure over all intensity regimes in #Astrophotography. Here a newly processed #Pixinsight version of 5h hours data from the #Seestar S50 of my club buddy Michael Hübgen. Note how color and structure go till the center of M42, the trapezium.

Well this kind of worked. The auto exposure and tracking freaked out a bit around totality, but mostly it was better than I expected. #seestars50 #seestar #astrophotography #eclipse #lunareclipse

OMG. Last night's lunar eclipse -- as seen from the Moon! The Blue Ghost lander got this shot. The Sun is overexposed, but in the reflection you can see it's almost fully eclipsed by the Earth. 🧪🔭 fireflyspace.com/news/blue-gh...

I hate posts like “Here my few s of data from yesterday without processing directly from camera”. Peers: dare to collect data and use software to make the best out of it! Here appr 2h of #Seestar S50 data from my astronomy club buddy Stefan Schorr, processed in #Pixinsight by me. #Astrophotography

its amazing how chatgpt knows everything about subjects I know nothing about, but is wrong like 40% of the time in things im an expert on. not going to think about this any further

From Hillary Diane Andales: We thought we finally found a direct descendant of the first stars. A follow-up observation showed that it PISN’t. 🔭✨ astrobites.org/2025/02/28/j...

What feels like relentless weeks of cloudy skies have finally opened up enough to collect some light on an ongoing project (my white whale). Here's the Wolf's Cave nebula. Still alot more NB data needed but its coming along nicely. Details in the alt text. #astronomy #astrophotography #space

Me too!

Hearing that the NASA DOGE firings started last night. I don’t really have any words.

Destroying the National Science Foundation, the crown jewel of scientific research in the US, will not make us great. This administration is working to undermine our nation in everything that it does. Tell Congress to act to save our nation. 🧪🔌💡☀️💨🔋 www.science.org/content/arti...