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stargazerrob.bsky.social
Rob Tilsley
@stargazerrob.bsky.social
2.1K followers 580 following 230 posts
Astrophotography shenanigans.
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Reposted by Rob Tilsley
astrokev.bsky.social
Jupiter imaged on Tuesday morning in good seeing, with the C11.
I think this is the first time I've captured vague albedo features on Ganymede, it's largest moon, which I was pleased about
🔭
November 13, 2025 at 5:30 PM
Reposted by Rob Tilsley
afischer.bsky.social
The planetary nebula Sh2-188 in the constellation Cassiopeia is also known as Shrimp Nebula due to its shape. I took this image over five nights in August using a C8, an ASI294mc Pro camera and a total exposure time of around 13 hours (details in image) #Astrophotography
@kat-astro-bot.bsky.social
Foto des planetarischen Nebels Sharpless 188, der wegen der Form seiner hellsten Bereiche auch Shrimp- oder Garnelen-Nebel genannt wird. Die Aufnahme entstand mit einer Astrokamera ASI294mc Pro durch ein Teleskop C8, Belichtungszeit insgesamt 13h 11min
November 6, 2025 at 6:54 PM
Reposted by Rob Tilsley
skycalpro.com
It's not the best image you are going to see of Comet C/2025 A6 (Lemmon), but I managed to catch it with my DSLR. 30 images stacked. 5 seconds/ISO 800/ F/3.5. A quick set up with the intervalometer, just after sunset. I'm quite pleased to have caught it!
#Astrophotography #Astronomy
November 2, 2025 at 8:06 PM
Reposted by Rob Tilsley
rami.spaceaustralia.com
Folks — @astrobites.bsky.social is a fantastic community-media source for astronomy news, and gives voice to the fantastic research that goes on by early career scientists.

If you wanna get some experience in Astro SciComm writing it’s the place to be.

Check link below for deets! 👇🏽
November 1, 2025 at 1:14 AM
Reposted by Rob Tilsley
astroroyalscot.bsky.social
Mind has been officially blown by seeing Saturn and its moon Titan through the Mills Observatory Victorian 10" Cooke telescope. WOW! Every time I've visited before, the clouds have come too, but not today! This old technology still works perfectly with a clockwork tracking mechanism. Stunning 🥳👌 🔭
A long old and rather large (several meters long) telescope pointing out of an open telescope dome.
October 28, 2025 at 9:13 PM
Reposted by Rob Tilsley
ddavisspaceart.bsky.social
October 27, 2025 ended with twilight adorned by luminous colorful brush strokes due to an earlier launch from Vandenberg. The plume was invisible until the darkening sky above the twilight revealed it as as a pale white wisp. Later, as Earth's shadow climbed up the plume, sunset colors appeared.
This is a series of photos of the lighting changing on the plume left over from a launch from Vandenberg hours before. These plumes are always fun to observe and photograph. It wasn't visible until the twilight was in progress, and then for a time only as a faint white wisp. As the surrounding sky darkened the sunlit plume shone at first white to blue white. This blue white color is partially due to the particle sizes acting on the light and partly due to the 'whiter' color of sunlight unfiltered by the atmosphere which makes our standard 'noon sunlight' a little yellower by the time it gets to the ground. The lower portions of the plume are enveloped in the climbing Earths shadow first, their lighting changing to whatever color dominates the heavily filtered Sun as it sets from that altitude. Typically the Sun, seen from up there setting behind a 'horizon' hundreds of miles away, will become yellower, then orange and finally a saturated coral red as it's flattened refracted remnants dwindle away.
October 28, 2025 at 7:11 AM
Reposted by Rob Tilsley
davidblanchard.bsky.social
Motion of Comet C/2025 A6 (Lemmon) over a period of ~1 hour.

Nikon D850, Nikkon 180mm AI-S, f/4, ISO 200, 30x120 seconds.

#astrophotography
October 27, 2025 at 5:13 AM
Reposted by Rob Tilsley
stuartatkinson.bsky.social
Managed to grab a few more images of Comet Lemmon this evening (Sunday Oct 26th) from Kielder Campsite, Northumberland, through very brief gaps in the clouds. This is a phone-processed stack of half a dozen jpg images taken with my Seestar S50.
October 26, 2025 at 8:41 PM
Reposted by Rob Tilsley
sjbastro.bsky.social
Messier 27, the Dumbbell Nebula from last night. Framed in the context of the wider star field in the constellation of Vulpecula. Taken with a Canon 250D DSLR through Evostar 72ED telescope on a Star Adventurer mount. #Astronomy #Astrophotography #Space
Shot of the Dumbbell Nebula in the constellation of Vulpecula on 25 October 2025. The nebula is a green oval shape, akin to a dumbbell. This shape also gives rise to its other name, the Apple Core Nebula. It is officially known as Messier 27 and NGC 6853. It is a planetary nebula, with the nebulosity resulting from a star shedding its outer layers and leaving a white dwarf behind. Settings: 28 stacked images at 10s exp, 420mm fl, f/5.8, ISO-3200.
October 26, 2025 at 11:03 AM
Reposted by Rob Tilsley
stim3on.bsky.social
#Comet C/2025 A6 #Lemmon in the constellation Boötes, on the evening of October 24th. Captured from the light polluted outskirts of Munich.

16 minutes integration time with my Fujifilm X-S10 and 135mm f4.5 lens (untracked).

#astrophotography 🔭
A starfield with many small and colorful stars is dominated by comet Lemmon which is oriented diagonally in the frame. The comet has a greenish coma and a diffuse yellowish dust tail is pointing up from the nucleus. Layered with the dust tail is the blueish ion-tail which is much narrower and longer, stretching beyond the top of the image. The ion tail shows some slight undulations from changes in the comets activity over time.
October 26, 2025 at 9:38 AM
Reposted by Rob Tilsley
astroroyalscot.bsky.social
Congrats to @carersinstemm.bsky.social for a successful and insightful launch event in Edinburgh's grand Playfair library. They're calling for systemic changes to funding, policy & culture to support carers in STEM.
Read more 👉 carersinstemm.co.uk & join future events in London/Manchester/Online 👩‍🔬🧪
carersinstemm.bsky.social Carers In STEMM @carersinstemm.bsky.social · 23d
Today marked the 1st of our “Roadshow” events to formally launch our survey report in the stunning venue of the Playfair library - Edinburgh

A huge thank you to panellists @pallettlab.bsky.social @astroroyalscot.bsky.social
Wei-Yu Lu (father, MRC fellow)
Janette Wark (EPSRC)
Adrian Lu (GCU)

👏👏👏
October 23, 2025 at 6:56 AM
Reposted by Rob Tilsley
ozalba.bsky.social
Another session with the #Seestar S50 last night. Getting a feel for what it can/can't do, but there's much to learn—including accessing/using the RAW files; maybe this weekend. Also need to test it in a dark sky, not suburban.

Here's 3x Orion neb w/ different exposures, and the Helix nebula. 1/n 🔭
1-minute exposure showing brighter parts of the Orion nebula, without burning out the centre; the Trapezium cluster remains visible. 6-minute exposure of Orion nebula; fainter areas coming into view, and image noise reduced, but centre now overexposed. 30-minute exposure of Orion nebula; more faint regions, and even less image noise, but dark background now has a blue cast. 45-minute exposure of the Helix nebula; the main helix shape is clearly visible, and the fainter arc to north-east is becoming visible.
October 23, 2025 at 1:19 AM
Reposted by Rob Tilsley
afischer.bsky.social
Comet C/2025 A6 (Lemmon) taken on 19 October from the roof of our garage at 135 mm focal length (stack of 192 10s-subs). Despite thin clouds and streetlights between the comet and me, the gas & dust tails are clearly visible in different colors. Brings back memories of Hale-Bopp #astrophotography
Foto des Kometen C/2025 A6 (Lemmon) mit bläulichem Gasschweif und gelblichem, gekrümmtem Staubschweif. Aufgenommen am 19. Oktober 2025 mit einer Spiegelreflexkamera bei 135 mm Brennweite, Summenbild aus 192 Einzelaufnahmen mit je 10 s Belichtung.
October 22, 2025 at 7:27 PM
Reposted by Rob Tilsley
salopchris.bsky.social
A night of two Comets C/2025 A6 Lemmon and the much greener comet C/2025 R2 Swan seen on 21.10.2025 from my Shropshire garden ☄️☄️
#Astrophotography #astronomy
October 22, 2025 at 6:26 AM
Reposted by Rob Tilsley
davidblanchard.bsky.social
Two comets in one evening (20 October 2025):

C/2025 A6 (Lemmon)
C/2025 R2 (SWAN)

Nikon D850, Tamron 35mm, f/2.8, ISO 200.
Additional details in Alt Text.

#astrophotography #landscape 📷
Comet C/2025 A6 (Lemmon) in the evening sky with reflections of stars and comets in Ashurst Lake. Green airglow is also present on the horizon. Nikon D850, Tamron 35mm, f/2.8, ISO 200, 120 seconds. Two stacked images: one tracking the stars/comet; the other fixed on the foreground. Comet C/2025 R2 (SWAN) and the Mlky Way. The comet is about 1/3 of the way down and to the left of the Milky Way. Nikon D850, Tamron 35mm, f/2.8, ISO 200, 22x120 seconds, stacked with Siril.
October 21, 2025 at 11:09 PM
Reposted by Rob Tilsley
afischer.bsky.social
That was an exciting evening on 18 October: 2 cameras, 2 comets and, to top it off, some #auroraborealis: C/2025 R2 (SWAN) was close to the bright nebulae M16 & M17 and the open clusters NGC6645 & M25 (1. image). Comet C/2025 A6 (Lemmon) tried to hide behind clouds but failed (2.)😉
#astrophotography
Astrofoto mit dem grünlichen Kometen C/2025 R2 (SWAN) vor der Milchstraße der Sternbilder Schild und Schütze neben den Nebeln Messier 16 und Messier 17 sowie den offenen Sternhaufen NGC 6645 und Messier 25. Aufgenommen am 18. Oktober 2025 mit einer Spiegelreflexkamera und 120 mm Brennweite mit mechanischer Nachführung, Summenbild aus 182 Einzelbildern von je 10 Sekunden Belichtung Komet C/2025 A6 (Lemmon) zwischen Schleierwolken über dem Elbeseitenkanal, aufgenommen am 18. Oktober 2025 mit einer Spiegelreflexkamera und 25 mm Brennweite, Einzelaufnahme mit 6 s Belichtung Schnappschuss des Polarlichts am 18. Oktober 2025, aufgenommen nahe Uelzen
October 20, 2025 at 7:07 PM
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jldauvergne.bsky.social
Just a normal dy in the solar system. Jupiter on october 13th observed from Paris.
October 14, 2025 at 7:21 AM
Reposted by Rob Tilsley
sjbastro.bsky.social
A capture of comet C/2025 A6 (Lemmon) yesterday morning under a 67% lit Moon. More of the tail captured this time, despite the moonlight. I could see the comet easily in binoculars too. I estimated it to be mag 5.7. Noticeably brighter than a few days ago. #Astronomy #Astrophotography #A6Lemmon
Image of comet C/2025 A6 (Lemmon) taken on 12 October 2025 at 04:28 UT. The comet is a green diffuse object in the centre of the image. Stars are around it and seen as trails due to the stacking process. Equipment and settings: Canon 250D DSLR through Evostar 72ED telescope on a Star Adventurer mount. 33 stacked images at 10s exp, 420mm fl, f/5.8, ISO-3200.
October 13, 2025 at 8:13 AM
Reposted by Rob Tilsley
mikechristie.bsky.social
Woken early by Felix Astronomicus and saw the sky was clear, so got a quick shot of the Moon. CFF135 🔭, #TeleVue 2.5x powermate, #Touptek 585 mono. Pleased that I got most of Hadley Rille. Best 100 frames from 1000 frame video. #astrophotography
Close up of the Moon showing the Apennine mountains, with Hadley Rille. The three major craters near the Apennines are Archimedes with lava filled floor, Autolycus and Aristillus. Following the sweep of the mountains you come to Cassini with A and B craters clearly seen. Then the Alpine Valley and Plato.
October 12, 2025 at 8:49 AM
Reposted by Rob Tilsley
naochansuzuki.bsky.social
更待月
分厚い雲の向こうの月。2枚目が元画像でここから16枚コンポジットして仕上げてます。
スパイ映画の画像処理で写真を鮮明にしていく気分でした。

#月 #更待月 #moon #天体写真 #星空 #astrophotgraphy #vsco #今夜の星空 #宙を見上げて #nikon #nikonp1000 #photoshop #vixen #vixenpolarie
October 12, 2025 at 10:06 AM
Reposted by Rob Tilsley
mandydaniels.bsky.social
The 66% #waning #gibbous #daytime #Moon, 2025 10 11, 08:53:24 UTC at an altitude of 38° 29' and a distance of 366 243 km.

Nikon D800
Skywatcher 200P

f/5.9, 1/500s, ISO-100, 1200 mm FL

#astronomy #astrophotography #craters
October 12, 2025 at 10:14 AM
Reposted by Rob Tilsley
petraboynton.bsky.social
Only a few hours to go before Small Son and I set off on our 4 mile fundraising walk in aid of The Miscarriage Association.

We're nearly at our target of £500 thanks to your generous donations, but if you can help us reach our goal today that would be wonderful!

www.justgiving.com/page/p-boynt...
Miscarriage Association's Memory Walk 2025
Help Petra Boynton raise money to support The Miscarriage Association
www.justgiving.com
October 12, 2025 at 10:49 AM
Reposted by Rob Tilsley
karenlmasters.bsky.social
Jess Wade is amazing, and it's my absolute honour to be one of the more than 2000 women in STEM whose wikipedia page she started: mymodernmet.com/jessica-wade... 🧪🔭👩‍🔬
Meet the Physicist Who Wrote Over 2,000 Wikipedia Biographies for Women in STEM
After noticing a lack of entries on Wikipedia for incredible women throughout history, this incredible woman decided to take matters into her own hands.
mymodernmet.com
October 12, 2025 at 7:26 AM
Reposted by Rob Tilsley
chanda.blacksky.app
The universe is too fucking fabulous for capitalism, y'all!

Last night's evidence:
1. North America Nebula (1 hour)
2. Andromeda (20 min)
3. Pac-Man Nebula (15 min)

The universe is basically just hydrogen, dark matter, and dark energy. Plus trillions upon trillions of perturbations lol
🔭
1/3
North America Nebula. Lots of red because of all of the hydrogen gas.
October 11, 2025 at 3:28 PM
Reposted by Rob Tilsley
astrodave.bsky.social
That's it... I'm moving the SE Asia, as @marwellaspaceart.bsky.social and @shahgazer.bsky.social get all of the good occultations, like tonight's occultation of Beta Tauri by the Moon: www.lunar-occultations.com/iota/bstar/1... note wiki entry on occultations: en.wikipedia.org/wiki/Beta_Ta...
Occultation
October 11, 2025 at 3:45 PM