Today's #sun as seen through a 15 cm refractor (f = 130 cm). Image taken with a DSLM in primary focus. Baader sun foil in front of lens. 17 of 100 images stacked. Used AutoStakkert!, Registax and GIMP. 🔭 #astrophoto

Messengers from #space: Invisible particles become visible in this bubble chamber which turns cosmic radiation into tracks you can watch in real time. Thin zigzags are electrons, long straight paths are muons, and thick short trails come from alpha particles losing their energy rapidly. 🔭 #physics

In Cancer lies an old, distant galaxy group - NGC 2563 being the brightest cluster galaxy. The 30-60 cluster members seem mostly lenticular plus some spirals. Distance 200m ly. Galaxy #27 (UGC 4332) is obviously distorted. Some faint galaxies behind cluster seem to be ~1,4bn ly away! 🔭 #astrophoto

Though it is leaving the current solar cycle's maximum behind, the sun today exhibited quite a number of active regions again. Skymax102, Panasonic S5 (total view), ASI220 (partial views) 🔭 #astrophoto

As part of yesterday's "Astronomy Day" in Germany, we did some necessary 😉 spring cleaning at the Walter-Hohmann Observatory. In the evening there were lectures, inter alia about ARTEMIS II, and observations especially of the moon and Jupiter. Thanks to everbody who actively contributed! #astronomy

Horsehead Nebula and Flame Nebula - a wide field image of the beautiful emission region in constellation Orion. Panasonic S5 mod, TS 70/474, dualband Ha/OIII, 93 x 1 min, ISO 640. Siril, GraXpert, Starnet, GIMP. 🔭 #astrophoto

The California Nebula is only 1000 ly away and the closest HII region to us. Because it's so near, the nebula appears quite large in the sky. It is likely illuminated by the nearby star ξ Persei Panasonic S5 mod, TS 70/474, dualband, 93 x 60 s, ISO 640, SIRIL, Starnet, GraXpert, GIMP 🔭 #astrophoto

Wizard and Lion Nebula. North of the image's center is Delta Cephei, the prototype of the Cepheid variables. Its actually a quadruple star - here, two stars of the system can be seen. Panasonic S5 mod, RedCat 51/250, dualband filter, ISO 640, 30x1 min. SIRIL, GraXpert, Starnet, GIMP. 🔭 #astrophoto

Northern Lights in the middle of Germany, a rare spectacle tonight! 🔭 #astrophoto

The "Lower's Nebula". A relatively unknown emission nebula in Orion. The star at its center also illuminates a small, triangular reflection nebula. Panasonic S5 mod, 30 cm Newtonian, dualband filter, ISO 640, 150 x 30 sec. SIRIL, GraXpert, Starnet, GIMP. 🔭 #astrophoto

Rework: The Eagle Nebula (Messier 16) with the famous Pillars of Creation. Panasonic S5 mod, Skymax 102, GTi, ISO 1000, 10 sec/sub, 75 min total. Siril, Starnet, GraXpert, GIMP The Skymax is not optimal for deep sky imaging (and we had a full moon, by the way), but GraXpert helps. 🙂 🔭 #astrophoto

Often overlooked is the Clamshell Nebula (SH2-119), a faint emission nebula located east (left) to the famous North America Nebula (NGC 7000). Panasonic S5, Redcat 51/250, dualband filter, ISO 640, 195 x 1 min. SIRIL, GraXpert, Startnet, GIMP 🔭#astrophoto

The Pleiades. Longer exposures bring out the faint dust structures through which this young star cluster is currently moving. Close to the bright stars, the gas and dust clouds strongly reflect the blue star light. S5, Redcat 51/250, ISO 640, 2 h. SIRIL, GraXpert, Starnet, GIMP 🔭 #astrophoto

Horsehead Nebula and Orion Nebula - this overview of a region in constellation Orion shows how "close" these famous deep sky objects are when looking at our night sky. (Image taken with Redcat 51/250) 🔭 #astrophoto

In addition, here is an oversight of the region around IC 1396. A very fine target (especially for longer focal lengths) is the Lion Nebula (Sh2-132) to the east of IC 1396 (left side of image). 🔭 #astrophoto

My favorite 2025 image: IC 1396 in Cepheus with the famous Elephant's Trunk Nebula to the right of its center, a stellar nursery, its very young stars being visible only in infrared. Panasonic S5, Redcat 51/250, dualband filter, 60 min, ISO 640. SIRIL, Graxpert, Starnet, GIMP. 🔭 #astrophoto

The beautiful Milky Way around Sadr, the supergiant in the center of Cygnus. Adjacent to Sadr is the Butterfly Nebula (IC 1318), an emission nebula with intense dark dust lanes in front of it. At the bottom, the small Crescent Nebula (NGC 6888), which surrounds a Wolf-Rayet star. 🔭 #astrophoto

In constellation Cygnus, the North America Nebula (left) and the Pelican Nebula (right) belong to the most prominent emission nebulae. Panasonic S5, TS 70/474, Star Adventurer GTi, ISO 640, no filters, 2 h, 30 sec subs. Siril, Graxpert, Starnet, Gimp. 🔭 #astrophoto

A very large group of sunspots is currently rotating into view. Mobile phone photo through Skymax102. 🔭 #astrophoto

8000 years ago, a supernova exploded and left a so-called supernova remnant - the large Veil Nebula in constellation Cygnus. app.astrobin.com/u/bernhard.s... Panasonic S5, Redcat 51/250, dualband filter, 65x1min, ISO 800. 🔭 #astrophoto

My favourite region on the #moon, Mare Imbrum, with adjacent craters Sinus Iridum, Plato and Copernicus. In this moon phase, special tectonic features, so-called wrinkles are visible on the floor of Mare Imbrum, inter alia Dorsum Heim and Dorsum Zirkel Skymax102, ASI 220 Mini Mono 🔭 #astrophoto

When imaging the constellation #Orion long enough, the faint "Barnard's Loop" becomes visible, an emission region measuring some 300 light years across. Panasonic S5, 22mm focal length, 1 hour stack (800 x 5 sec, as I had no tracking available), ISO 800, Crete. 🔭 #astrophoto

Another example of a gas cloud that is both ionized and at the same time dissolved by intense stellar winds. Here, it is the star Gamma Cassiopeia that shapes the nebula IC 63, also known as the 'Ghost of Cassiopeia'. Newton 300/1350, Panasonic S5 mod, 30 min Ha/OIII, ISO 800. 🔭 #astrophoto

The result of yesterday's cloudless night: The emission nebula NGC 6820 with star cluster NGC 6823. The hot, young stars of the cluster erode the surrounding gas and dust. Newtonian 300/1350, Panasonic S5 mod, 65x30s RGB + 130x30s Ha/OIII, ISO 800.

If you ever come to Vienna, I recommend a visit to the Kuffner #Observatory on the outskirts of the city. We had a special tour there last night from a dedicated club member. Central is the large refractor (270/3500) from 1887, the third largest in Austria. 🔭

My take of tonight's #lunar eclipse. The totality was hidden by clouds, unfortunately. 🤷‍♂️

Our #sun, which currently displays numerous spots and a particular large, complex group of sun spots. It's great that the peak of solar activity seems to persist for a while longer! Panasonic S5 mod, Skymax102/1300, 5% of 260 frames, 1/400 sec each, ISO 100 🔭 #astrophoto

Trifid Nebula (M20), imaged 2 nights ago before it hid behind the rooftops. The red part is an emission nebula, ie hydrogen ionized by the central star cluster - while the blue part is a reflection nebula Panasonic S5 mod, Skymax102/1300, 30 min, ISO 800, Siril/Starnet/Graxpert/Gimp 🔭 #astrophoto

I added some H alpha to my recent image of the nebulae Sh2-54, Eagle, Omega, and Messier 24. The HII emission regions stand out a lot clearer. Also, the colors are a bit more realistic now. 🔭 #astrophoto

The Milky Way between the open star clusters M11 (left) and M26 (bottom). Here, no dark clouds obstruct our view into deeper regions of our galaxy. Panasonic S5 mod, Redcat51/250, 80x30sec, ISO 800, dualband filter 🔭 #astrophoto

Messier 101, the Pinwheel Galaxy, is roughly the size of our own galaxy, the Milky Way. We see it from a distance of 22 million light years. Panasonic S5, Skymax 102/1300, ISO 800, 80 min total 🔭 #astrophoto

Our former ninth planet #Pluto as seen in constellation Capricorn last night. Pluto's position against the night sky noticeably changes from night to night. Magnitude ~15.5 mag, distance 34.4 AU (AU = distance earth-sun) Panasonic S5, Skymax 102/1300, 233 x 10 sec = 40 min, ISO 800 🔭 #astrophoto

A look into the plane of our Milky Way: HII region Sh2-54, Eagle Nebula, Omega Nebula and Messier 24. Panasonic S5 mod, Redcat51, 222 x 30sec = 1h 50 min, ISO 800 Full picture: app.astrobin.com/u/bernhard.s... 🔭 #astrophoto

Rework of my image of the Heart and Soul Nebula taken two weeks ago. Now with stars... I like it a lot better. Thanks to Dennis Marso and his very good Youtube tutorial on Siril+Graxpert+Gimp! 🔭 #astrophoto

The #sun shows a number of bipolar sun spot groups these days, the sun spots themselves being relatively small. Panasonic S5, Skymax 102, 6% of 375 frames, 1/100 sec each, ISO 100 🔭 #astrophoto

The Pacman nebula (NGC 281) - obviously trying to catch Schedar 😉, the brightest star in Cassiopeia. Pacman is an emission nebula almost 10,000 ly away. At its center it hosts prominent dust bands and an open star cluster. Panasonic S5, Redcat51, ISO 800, 80 min total 🔭 #astrophotography

Starless Version of the Heart and Soul Nebula in Cassiopeia. The Soul Nebula to the left is also called the Embryo Nebula, a name which suits its appearence better, I'd say. Panasonic S5, Redcat51, ISO 800, 70 min, 30 sec per frame. Stars removed with Starnet/SIRIL. 🔭 #astrophotography

Our nearest large neighbour, the Andromeda galaxy, accompanied by two small satellite galaxies, as seen from a shore in Brittany. Here, they fortunately switch off street lights at midnight 🙂👍 Redcat51, Panasonic S5, 75 min total, 30 sec per frame, ISO 800. 🔭 #astrophotography

M51, the Whirlpool Galaxy - a spiral galaxy interacting with irregular companion NGC 5195 which triggers intensive star formation in M51, both at distance of 24 million ly. Lumix S5, Skymax 102 (1300 mm, f/12,7!). StarAdventurer GTi. 280 images, 15 sec each, ISO 800, 70 min. 🔭 #astrophotography

Today's sun in H alpha light. Note the huge solar prominence to the left. Sorry for the quality, had only my mobile phone available to capture the Coronado's image. 🔭 #astrophotography

Globular cluster M13 in the constellation Hercules. Approx. 25000 light years away from us and consisting of roughly half a million stars. M13 actually was the target of the #Arecibo message sent 1974. 👽 Panasonic S5 on a 30 cm Newton. 25 min in total. ISO 800. 🔭 #astrophotography

Moon this afternoon... Panasonic S5 on Skymax102. 20 of 200 images, 1/200 sec at ISO 500 each. 🔭 #astrophotography

The Leo Triplet, a group of three galaxies some 35 million light years away. DSLM on Redcat51, 85 min total, 340 frames, 15 sec each, ISO 400. 🔭 #astrophotography

Here comes the sun... Good to see the current solar cycle still produces magnificient sun spot groups! DSLM on Newton 114/900. 7% of 540 images, 1/400 sec at ISO 340 each. 🔭 #astrophotography

Last night's moon... Image taken with a DSLM on a small 114/900 Newton. 20% of 800 images stacked, 1/200 sec at ISO 800 each. The close-up shows crater Petavius with its rim (left to the central peak). 🔭 #astrophotography

Mars approaching the open star cluster M44 (Praesepe, or The Beehive). Image taken on April, 25th. DSLM on Redcat51. Only 3 min total due to clouds, ISO 800. 🔭 #astrophotography

The moon, shortly before eclipsing the Pleiades tonight. Mobile phone on 8x20 binoculars 😊 🔭 #astrophotography

The Beehive Cluster (M44), surrounded by stars in the constellation Cancer. 580 light years to travel, measuring 23 ly across. Contains ~300 stars and is about 700 million years old. DSLM, Redcat51, 20 min total at ISO 800. 🔭 #astrophotography

The 'Monkey Head' (NGC 2174), an HII emission nebula 6400 light years away and measuring 75 ly across. Hydrogen gas is ionized by the photons of nearby stars, reemitting the light we see here. DSLM, RedCat51, 1 hr total at ISO 800. Needs more focal length and time, I know 😉 🔭 #astrophotography

Public 'Astronomy Day' at the Walter Hohmann Observatory in Essen, Germany. Many more than expected came to see the partial solar eclipse. Great day!