iiinova — where your digital self keeps evolving

Ronald Bijtenhoorn @astronald.bsky.social · 27/12/2025

🔭 Yesterday I made a last attempt to capture 3I/ATLAS, our interstellar visitor. By now its brightness has faded to just magnitude 13.3, but after an hour of exposure it still showed up. A faint glimpse of a traveler from beyond our solar system. 😀 #Astrophotography #seestar #3iatlas #comet

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Ronald Bijtenhoorn @astronald.bsky.social · 12/12/2025

🔭 In the constellation Cygnus lies IC 5146 (Cocoon Nebula). It’s a blend of reflection and emission nebula, wrapped around an open cluster of young stars. The nebula sits about 2,500 light-years away and spans roughly 4 light-years across. 😀 #Astrophotography #seestar @kat-astro-bot.bsky.social

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Ronald Bijtenhoorn @astronald.bsky.social · 11/12/2025

🔭 Last night, finally a clear evening again! IC 1396, the Elephant Trunk Nebula in the constellation Cepheus. This nebula is a dark cloud of gas and dust with a striking, winding edge that glows brightly. Its shape resembles an elephant’s trunk, hence the name. 😀 #seestar @kat-astro-bot.bsky.social

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Ronald Bijtenhoorn @astronald.bsky.social · 30/11/2025

🔭 Between the clouds, I still managed to make an attempt to capture ☄️ comet C/2025 K1 (ATLAS). At the moment it is moving through the constellation Camelopardalis, and with a brightness of magnitude 11.1 it’s not exactly a bright object. 😀 #Astrophotography #seestar #c2025k1 #comet

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Ronald Bijtenhoorn @astronald.bsky.social · 28/11/2025

The past days have been cloudy, but every now and then she ☀️ manages to peek through. I’m slowly getting closer to the result I have in mind, but still plenty to learn, both in capturing and in post-processing. Very pleased with the Lunt40 + ZWO ASI174MM combo. 😀 #lunt #halpha #sun #solarphotography

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Ronald Bijtenhoorn @astronald.bsky.social · 09/11/2025

🔭 The Sun in H-alpha - First light with my new Lunt telescope! I captured an image between the passing clouds, just before the Sun disappeared behind our house. There’s still plenty of room for improvement but I’m quite happy with this first photo nonetheless. 😀 #Astrophotography #lunt #halpha #sun

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Ronald Bijtenhoorn @astronald.bsky.social · 07/11/2025

🔭 Earlier this evening, before the Moon rose, I spent about an hour tracking Comet C/2025 R2 (SWAN). Its brightness has now dropped to magnitude 8.4 and after rounding the Sun, the comet is heading back toward the distant regions beyond the Kuiper Belt. #Astrophotography #seestar #c2025r2 #comet

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Ronald Bijtenhoorn @astronald.bsky.social · 02/11/2025

🔭 Last night the clouds suddenly cleared, so I quickly set up the Seestar outside. I was able to capture the Iris Nebula for about 2 hours (until it started raining again at 10:15 p.m.) 😀 * Distance: 1,300 lj * Const: Cepheus * Mag: 6.8 #Astrophotography #seestar #NGC7023 @kat-astro-bot.bsky.social

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Ronald Bijtenhoorn @astronald.bsky.social · 29/10/2025

🔭 Over the past few days, I’ve tried several times to capture comet C/2025 A6 (Lemmon) again. Last night, I finally managed to do it! The conditions weren’t great and I couldn’t see it with the naked eye, but luckily I could spot it through my binoculars. #Astrophotography #seestar #c2025a6 #comet

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Ronald Bijtenhoorn @astronald.bsky.social · 18/10/2025

Die staat er mooi op! Bij ons was bewolking..

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Ronald Bijtenhoorn @astronald.bsky.social · 14/10/2025

🔭 Last night I set up the Seestar to capture M15 — a globular star cluster in Pegasus. Over 12 billion years old and among the oldest objects in our galaxy, M15 has an exceptionally dense core that may contain a massive black hole. 😀 #Astrophotography #seestar #M15 @kat-astro-bot.bsky.social

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Ronald Bijtenhoorn @astronald.bsky.social · 28/09/2025

🔭 This morning I set my alarm for 4:00 AM to try to capture comet C/2025 A6 (Lemmon). After waking up, I looked outside and saw Jupiter in the sky, so no clouds! 😀 But the conditions weren’t ideal though, so hopefully, I’ll get another chance soon. #Astrophotography #seestar #c2025a6 #comet

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Ronald Bijtenhoorn @astronald.bsky.social · 24/09/2025

NGC 6946 (The Fireworks Galaxy) is a bright spiral galaxy in the constellation Cepheus. NGC 6946 was nicknamed the Fireworks Galaxy because it has hosted 10 supernovae over the last century, which is more than any other known galaxy. #Astrophotography #seestar #NGC6946 @kat-astro-bot.bsky.social

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Ronald Bijtenhoorn @astronald.bsky.social · 08/09/2025

🔭 M27 - The Dumbbell Nebula is a planetary nebula in the constellation Vulpecula, at a distance of about 1360 light-years and has brightness of magnitude 7.5. #Astrophotography #seestar #M27 @kat-astro-bot.bsky.social

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Ronald Bijtenhoorn @astronald.bsky.social · 07/09/2025

Hier op Schiermonnikoog was het gisteren sluier en was de maan pas goed zichtbaar rond 23:00 toen zij hoger aan de hemel stond. Vandaag is er meer wind en is het helderder en zijn mijn verwachtingen licht gestegen. 😀

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Ronald Bijtenhoorn @astronald.bsky.social · 07/09/2025

Nice shot, ‘Mirach’s Ghost’. (NGC404) is also good visible!

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Ronald Bijtenhoorn @astronald.bsky.social · 06/09/2025

🔭 NGC6990 - The Western Veil Nebula is part of the Cygnus Loop, a supernova remnant in the constellation Cygnus. 😀 #Astrophotography #seestar #ngc6990 @kat-astro-bot.bsky.social

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Ronald Bijtenhoorn @astronald.bsky.social · 05/09/2025

La nebulozo estas M27 (ne M26) 😉

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Ronald Bijtenhoorn @astronald.bsky.social · 02/09/2025

🔭 NGC6992 - The Eastern Veil Nebula is part of the Cygnus Loop, a supernova remnant in the constellation Cygnus. #Astrophotography #seestar #NGC6992 @kat-astro-bot.bsky.social

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Ronald Bijtenhoorn @astronald.bsky.social · 03/05/2025

Haha, jij weet wel hoe je de lachers op je hand kan krijgen! 😀

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Ronald Bijtenhoorn @astronald.bsky.social · 26/04/2025

Prachtig! Wat een mooie dieren! 😀

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Reposted by Ronald Bijtenhoorn

Kym @ The Evening Sky Map @skymaps.com · 24/04/2025

🌟 The May 2025 edition of The Evening Sky Map is ready for download at skymaps.com/tesm/. The PDF includes a Sky Calendar and user-friendly sky maps for the northern & southern hemispheres, as well as equatorial regions. Please share & enjoy exploring the Universe! 🔭 #astronomy #stargazing

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Ronald Bijtenhoorn @astronald.bsky.social · 24/04/2025

Dat is lief en voelt als een warm welkom! 😀

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Ronald Bijtenhoorn @astronald.bsky.social · 11/04/2025

🔭 Comet C/2025 F2 (SWAN) also captured in the Netherlands! I will give it a try tomorrow morning! 😀

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Reposted by Ronald Bijtenhoorn

Space Cowboys Podcast @spacecowboyspod.bsky.social · 09/04/2025

Een mislukte première voor Spectrum-raket, defensie en ruimtevaart in Delft en studeren op een missie naar Titan. Dat en meer bespreken Thijs Roes, Erik Laan en Luc van den Abeelen in deze nieuwe SpaceCowboys www.bnr.nl/podcast/s...

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Reposted by Ronald Bijtenhoorn

Naztronomy @naztronomy.com · 10/04/2025

Quick video about the newly discovered Comet C/2025 F2 (SWAN) and how to add it to stellarium: www.youtube.com/watch?v=GA6f... #astronomy #Comets #Space

youtube.com

Newly Discovered Comet C/2025 F2 (SWAN) and How to Add it to Stellarium

YouTube video by Naztronomy

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Ronald Bijtenhoorn @astronald.bsky.social · 08/04/2025

🔭 Great challenge for the coming week! 😀

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Ronald Bijtenhoorn @astronald.bsky.social · 07/04/2025

🔭 Last attempt to capture the Orion Nebula (M42), it slowly disappears into the evening twilight to reappear in the early morning of September. #Astrophotography #seestar #M42 @kat-astro-bot.bsky.social

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Ronald Bijtenhoorn @astronald.bsky.social · 04/04/2025

🎵Wir fahren, fahren, fahren auf der Autobahn🎵 😀

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Ronald Bijtenhoorn @astronald.bsky.social · 29/03/2025

Compilation of the partial solar eclipse, during the maximum at 12:10 about 24% of the sun was covered. It was a bit of a challenge to take the pictures between the clouds. 😊 🔭 #seestar #eclips #solareclips #sun #moon

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Ronald Bijtenhoorn @astronald.bsky.social · 24/03/2025

I have added two books to my 🔭 astro library this weekend. I got my hands on a second-hand french version of Rükl's Moon Atlas. And further I came across 'Planetary Astronomy' by Christophe Pellier to learn more about capturing and editing planetary photos. Happy reader! 😀

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Reposted by Ronald Bijtenhoorn

Chris Lintott @chrislintott.bsky.social · 23/03/2025

Happy Saturn ring plane crossing day to all who celebrate.

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Ronald Bijtenhoorn @astronald.bsky.social · 20/03/2025

Ik las later dat het een tankvliegtuig was met 6 straaljagers (F15 en F-35's), opgestegen vanuit Engeland

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Ronald Bijtenhoorn @astronald.bsky.social · 20/03/2025

Thanks Mike! Yes correct, the SCT is 150/1500mm and I also used a Barlow 2x

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Ronald Bijtenhoorn @astronald.bsky.social · 19/03/2025

Thanks for the link; I will look into it!

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Ronald Bijtenhoorn @astronald.bsky.social · 19/03/2025

Ik ben benieuwd, ik reken nergens op dan valt het altijd mee 😀

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Ronald Bijtenhoorn @astronald.bsky.social · 19/03/2025

🔭 First try to capture #Jupiter with the ZWO ASI664MC on my 6” SCT from our backyard Circumstances were not ideal; 3 months after opposition and Jupiter just visible above our rooftop. Still a lot to learn about capturing and post-processing but happy with this first result! 😀 #Astrophotography

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Reposted by Ronald Bijtenhoorn

Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 02/02/2025

Last night we finally had clear skies again 😍 The Seestar telescope was happily at work, and here’s the result: NGC2237 (mosaic), M44 (mosaic) and M61.

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Reposted by Ronald Bijtenhoorn

Esther Hanko @oetie.nl · 02/02/2025

Had another go at #Jupiter last night with my trusty 18cm maksutov in my backyard in Purmerend, the Netherlands. With the Great Red Spot, too. #astrophotography 🔭 Stil have lots of data to go through, so more to come :)

Jupiter, a gray/brown striped planet with the Great Red Spot that's not too great at the moment at the bottom left.

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Ronald Bijtenhoorn @astronald.bsky.social · 11/01/2025

Link is niet helemaal compleet; zou dit moeten zijn: sovon.nl/sovonacademi...

sovon.nl

Verdiepingscursus broedvogels | Sovon

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Reposted by Ronald Bijtenhoorn

Kym @ The Evening Sky Map @skymaps.com · 31/12/2024

The Evening Sky Map celebrates its 25th anniversary today! Over 1,000 issues have been handcrafted and distributed freely to sky enthusiasts worldwide. The monthly map serves both beginners learning the night sky & more experienced stargazers checking what's up each month. 🔭 🧪 skymaps.com/tesm/

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Ronald Bijtenhoorn @astronald.bsky.social · 27/12/2024

🔭 M1 - Crab Nebula, remnant of a supernova observed by Chinese and Japanese observers in 1054. Distance 6500 Light Year; Magnitude 8.4 Photo taken with the #seestar ; exposure time 48 min 😀

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Ronald Bijtenhoorn @astronald.bsky.social · 23/12/2024

Back home (bortle 7) I check the separate files manually and do the stacking in Siril before I bring it to Lightroom for finetuning. We are now for a week in bortle 3 area and this photo is the stacked .FIT file straight from the Seestar and is only finetuned in Lightroom.

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Ronald Bijtenhoorn @astronald.bsky.social · 23/12/2024

🔭 M45 - Pleiades, seen between the rain showers and the clouds. Photo taken with the #seestar ; exposure time 31 min 😀

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Reposted by Ronald Bijtenhoorn

Steve Brown - astronomy and astrophotography @sjbastro.bsky.social · 10/12/2024

Photographing #Geminids thread (please share with anyone who might be interested): If you're taking photographs of a meteor shower, it's important to be able to distinguish between a meteor and a satellite, or other artificial night sky object. Here is some guidance: #Astrophotography #Astronomy

A Geminid meteor between Taurus and Orion - captured on 14 December 2022 at 22:45 UT.

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Ronald Bijtenhoorn @astronald.bsky.social · 05/12/2024

Geweldig, dit is een boek waar ik naar uitkijk 😀

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