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Ronald Bijtenhoorn

@astronald.bsky.social

🏠 Heemskerk (NL) | πŸ”­ Amateurastronoom 🌍 Website: https://ruimtesoep.nl - Observaties vanuit mijn Achtertuin

172 Followers  |  134 Following  |  54 Posts  |  Joined: 13.11.2024  |  1.7674

Latest posts by astronald.bsky.social on Bluesky

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πŸ”­ Between the clouds, I still managed to make an attempt to capture β˜„οΈ 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. πŸ˜€
#Astrophotography #seestar #c2025k1 #comet

30.11.2025 14:22 β€” πŸ‘ 25    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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The past days have been cloudy, but every now and then she β˜€οΈ 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. πŸ˜€
#lunt #halpha #sun #solarphotography

28.11.2025 15:31 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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πŸ”­ 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. πŸ˜€
#Astrophotography #lunt #halpha #sun

09.11.2025 15:21 β€” πŸ‘ 10    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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πŸ”­ 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

07.11.2025 21:19 β€” πŸ‘ 18    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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πŸ”­ 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.) πŸ˜€
* Distance: 1,300 lj
* Const: Cepheus
* Mag: 6.8
#Astrophotography #seestar #NGC7023 @kat-astro-bot.bsky.social

02.11.2025 13:12 β€” πŸ‘ 11    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0
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πŸ”­ 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

29.10.2025 12:42 β€” πŸ‘ 29    πŸ” 4    πŸ’¬ 1    πŸ“Œ 0

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

18.10.2025 13:09 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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πŸ”­ Last night I set up the Seestar to capture M15 β€” 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. πŸ˜€
#Astrophotography #seestar #M15 @kat-astro-bot.bsky.social

14.10.2025 18:10 β€” πŸ‘ 8    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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πŸ”­ 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! πŸ˜€
But the conditions weren’t ideal though, so hopefully, I’ll get another chance soon.
#Astrophotography #seestar #c2025a6 #comet

28.09.2025 13:53 β€” πŸ‘ 8    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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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

24.09.2025 13:37 β€” πŸ‘ 6    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0
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πŸ”­ 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

08.09.2025 13:12 β€” πŸ‘ 16    πŸ” 1    πŸ’¬ 2    πŸ“Œ 0

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. πŸ˜€

07.09.2025 11:34 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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

07.09.2025 07:27 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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πŸ”­ NGC6990 - The Western Veil Nebula is part of the Cygnus Loop, a supernova remnant in the constellation Cygnus. πŸ˜€
#Astrophotography #seestar #ngc6990 @kat-astro-bot.bsky.social

06.09.2025 16:31 β€” πŸ‘ 15    πŸ” 4    πŸ’¬ 1    πŸ“Œ 0

La nebulozo estas M27 (ne M26) πŸ˜‰

05.09.2025 05:23 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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πŸ”­ 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

02.09.2025 17:13 β€” πŸ‘ 14    πŸ” 3    πŸ’¬ 1    πŸ“Œ 1

Haha, jij weet wel hoe je de lachers op je hand kan krijgen! πŸ˜€

03.05.2025 08:29 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

En mooi vastgelegd natuurlijk!

26.04.2025 06:46 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Prachtig! Wat een mooie dieren! πŸ˜€

26.04.2025 06:45 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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🌟 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! πŸ”­
#astronomy #stargazing

24.04.2025 13:49 β€” πŸ‘ 21    πŸ” 7    πŸ’¬ 0    πŸ“Œ 0

Dat is lief en voelt als een warm welkom! πŸ˜€

24.04.2025 17:55 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

πŸ”­ Comet C/2025 F2 (SWAN) also captured in the Netherlands! I will give it a try tomorrow morning! πŸ˜€

11.04.2025 09:24 β€” πŸ‘ 9    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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...

09.04.2025 17:14 β€” πŸ‘ 3    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0
Newly Discovered Comet C/2025 F2 (SWAN) and How to Add it to Stellarium
YouTube video by Naztronomy Newly Discovered Comet C/2025 F2 (SWAN) and How to Add it to Stellarium

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

10.04.2025 03:08 β€” πŸ‘ 16    πŸ” 5    πŸ’¬ 0    πŸ“Œ 0

πŸ”­ Great challenge for the coming week! πŸ˜€

08.04.2025 09:47 β€” πŸ‘ 13    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
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πŸ”­ 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

07.04.2025 18:20 β€” πŸ‘ 134    πŸ” 18    πŸ’¬ 4    πŸ“Œ 0

🎡Wir fahren, fahren, fahren auf der Autobahn🎡 πŸ˜€

04.04.2025 17:56 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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πŸ”­ The Moon close to the Pleiades (M45)
#astrophotography

01.04.2025 20:53 β€” πŸ‘ 30    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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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. 😊
πŸ”­ #seestar #eclips #solareclips #sun #moon

29.03.2025 13:19 β€” πŸ‘ 33    πŸ” 3    πŸ’¬ 1    πŸ“Œ 0
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I have added two books to my πŸ”­ astro library this weekend.
I got my hands on a second-hand french version of RΓΌkl's Moon Atlas.
And further I came across 'Planetary Astronomy' by Christophe Pellier to learn more about capturing and editing planetary photos.
Happy reader! πŸ˜€

24.03.2025 19:40 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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