Monthly Archives: June 2025

Omega Centauri

20-inch ak3, NA, ak3, astrofotografie, astronomie, astronomy, astrophotography, centaurus, globular cluster, hakos, hakos guest farm, ias, ias observatory, ias observatory hakos, khomas, kugelsternhaufen, namibia, ngc, ngc5139, omega centauri, star, star cluster, stars, stern, sterne, sternhaufen, world, zentaur
NGC 5139 – Omega Centauri Globular Cluster – OSC v1

And one more. ;-) Of course, Omega Centauri aka NGC 5139 is a jewel in the southern sky and a go-to-target. So Omega Centauri’s photons were the “first light” for the ASI 2600 MC Duo on the AK3 astrograph, but I messed up focussing and had to redo it later.

All three globular clusters here in the blog were processed in PixInsight and Lightroom with the same color calibration and processing steps. Interestingly enough, their appearance varies quite a bit!

Also compare this with be previous image of Omega Centauri.

More details at Astrobin.

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Flickering Globular Cluster

20-inch ak3, NA, ak3, astrofotografie, astronomie, astronomy, astrophotography, globular cluster, hakos, hakos guest farm, ias, ias observatory, ias observatory hakos, khomas, kugelsternhaufen, m62, messier, namibia, ngc, ngc6266, ophiuchus, star, star cluster, stars, stern, sterne, sternhaufen, world
Messier 62 – Flickering Globular Cluster in Ophiuchus – OSC v2

Another globular cluster, only about 9 degrees from M4 towards the constellation Ophiuchus, Messier 62 or NGC 6266 against the dense background star field of the Milky Way.

More details at Astrobin.

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Spider Globular Cluster

20-inch ak3, NA, ak3, astrofotografie, astronomie, astronomy, astrophotography, globular cluster, hakos, hakos guest farm, ias, ias observatory, ias observatory hakos, khomas, kugelsternhaufen, m4, messier, namibia, ngc, ngc6121, scorpius, star, star cluster, stars, stern, sterne, sternhaufen, world
Messier 4 – Spider Globular Cluster in Scorpius – OSC v3

More processed OSC data with the ASI 2600 MC Duo and the IAS 20″ telescope AK3, featuring the globular cluster Messier 4 aka NGC 6121.

Notable change to my previously shown OSC workflow: I used “K2V star” as the white reference for SpectrophotometricColorCalibration. Standard “Average spiral galaxy” yielded stars, which were too “golden” for my taste, thus this bluer/colder rendition.

See also at Astrobin.

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Dellbrückentag – Mehr Impressionen

DE, DE-NW, K, NRW, cologne, dellbrück, dellbrückentag, deutschland, ereignisse, events, germany, köln, nordrhein-westfalen, northrhine-westfalia, stadtbezirk 9 - mülheim, world
Dellbrückentag 2025 – Doppel im Viertel

Dellbrückentag – Doppel im Viertel – Von Schaufenster zu Schaufenster

Ausstellungsrundgang zu Fotos von Rebecca Peetz mit „Kulturpaaren“ aus Architektur, Bildung, Fotografie, Literatur und Medien sowie (viel) Musik. Fand am Freitag, 30. Mai 2025 statt.

Die komplette kleine Serie findet sich hier unter Gallery > Photography > Köln > Dellbrückentag 2025.

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Dellbrückentag – Doppel im Viertel

DE, DE-NW, K, NRW, cologne, dellbrück, dellbrückentag, deutschland, ereignisse, events, germany, köln, nordrhein-westfalen, northrhine-westfalia, stadtbezirk 9 - mülheim, world
Dellbrückentag 2025 – Doppel im Viertel

Dellbrückentag – Doppel im Viertel

Ausstellungsrundgang zu Fotos von Rebecca Peetz mit „Kulturpaaren“ aus Architektur, Bildung, Fotografie, Literatur und Medien sowie (viel) Musik. Fand am Freitag, 30. Mai 2025 statt.

Die komplette kleine Serie findet sich hier unter Gallery > Photography > Köln > Dellbrückentag 2025.

Continue reading →