Pepe Chambó
@pepechambo.cometografia.es
Amateur astronomer 🔭 astrophotographer 📷 and comet hunter ☄️
Administrator of the website 🔗 https://cometografia.es
Administrator of the website 🔗 https://cometografia.es
The interstellar comet 3I/ATLAS doing comet things...
📉Updated apparent and heliocentric light curves, coma diameter, and condensation 🔭
📉Updated apparent and heliocentric light curves, coma diameter, and condensation 🔭
December 3, 2025 at 8:12 PM
The interstellar comet 3I/ATLAS doing comet things...
📉Updated apparent and heliocentric light curves, coma diameter, and condensation 🔭
📉Updated apparent and heliocentric light curves, coma diameter, and condensation 🔭
December 2, 2025 at 8:03 PM
New 2.0 m TTT3 telescope images of comet C/2025 R2 (SWAN) suggest a possible nucleus fragmentation. Between Oct 19 and Nov 2, the once-symmetric central condensation became elongated, revealing a distinct secondary component — evidence the nucleus may be splitting.
Credits: ttt.iac.es, tst.iac.es
Credits: ttt.iac.es, tst.iac.es
November 4, 2025 at 7:53 PM
New 2.0 m TTT3 telescope images of comet C/2025 R2 (SWAN) suggest a possible nucleus fragmentation. Between Oct 19 and Nov 2, the once-symmetric central condensation became elongated, revealing a distinct secondary component — evidence the nucleus may be splitting.
Credits: ttt.iac.es, tst.iac.es
Credits: ttt.iac.es, tst.iac.es
I’ve made a short video showing comet C/2025 K1 (ATLAS) as it passed perihelion in November 8, 2025 — which, by the way, it has survived.
It was observed through the LASCO-C3 coronagraph aboard the SOHO solar space telescope, and I think it went largely unnoticed.
#astronomy #comet
It was observed through the LASCO-C3 coronagraph aboard the SOHO solar space telescope, and I think it went largely unnoticed.
#astronomy #comet
October 24, 2025 at 6:34 PM
I’ve made a short video showing comet C/2025 K1 (ATLAS) as it passed perihelion in November 8, 2025 — which, by the way, it has survived.
It was observed through the LASCO-C3 coronagraph aboard the SOHO solar space telescope, and I think it went largely unnoticed.
#astronomy #comet
It was observed through the LASCO-C3 coronagraph aboard the SOHO solar space telescope, and I think it went largely unnoticed.
#astronomy #comet
Comet C/2025 A6 (Lemmon) captured with the TST and TTT telescopes from Teide Observatory
A rewarding challenge working with exceptional data and professional collaboration
Detail 👇
ℹ️ cometografia.es/2025a6-lemmo...
Credits: Pepe Chambo, Miquel Serra Ricart
tst.iac.es | ttt.iac.es | iac.es
#astronomy
A rewarding challenge working with exceptional data and professional collaboration
Detail 👇
ℹ️ cometografia.es/2025a6-lemmo...
Credits: Pepe Chambo, Miquel Serra Ricart
tst.iac.es | ttt.iac.es | iac.es
#astronomy
October 17, 2025 at 8:08 PM
Comet C/2025 A6 (Lemmon) captured with the TST and TTT telescopes from Teide Observatory
A rewarding challenge working with exceptional data and professional collaboration
Detail 👇
ℹ️ cometografia.es/2025a6-lemmo...
Credits: Pepe Chambo, Miquel Serra Ricart
tst.iac.es | ttt.iac.es | iac.es
#astronomy
A rewarding challenge working with exceptional data and professional collaboration
Detail 👇
ℹ️ cometografia.es/2025a6-lemmo...
Credits: Pepe Chambo, Miquel Serra Ricart
tst.iac.es | ttt.iac.es | iac.es
#astronomy
In addition to Lemmon we have another bright comet at its peak of magnitude 6, visible with binoculars from anywhere in the world
This is C/2025 R2 (SWAN), and here’s its light curve. Observable without moonlight (blue band) at the beginning of the night:
ℹ️ cometografia.es/cometas-visi...
#astronomy
This is C/2025 R2 (SWAN), and here’s its light curve. Observable without moonlight (blue band) at the beginning of the night:
ℹ️ cometografia.es/cometas-visi...
#astronomy
October 15, 2025 at 6:56 PM
In addition to Lemmon we have another bright comet at its peak of magnitude 6, visible with binoculars from anywhere in the world
This is C/2025 R2 (SWAN), and here’s its light curve. Observable without moonlight (blue band) at the beginning of the night:
ℹ️ cometografia.es/cometas-visi...
#astronomy
This is C/2025 R2 (SWAN), and here’s its light curve. Observable without moonlight (blue band) at the beginning of the night:
ℹ️ cometografia.es/cometas-visi...
#astronomy
☄️ Starting tomorrow, October 13, we’ll have the most favorable days to observe with binoculars or image the comet C/2025 A6 (Lemmon). It will be visible at dusk, low over the northwest horizon, around magnitude 5.
All the info here 👇
ℹ️ cometografia.es/cometas-visi...
All the info here 👇
ℹ️ cometografia.es/cometas-visi...
October 12, 2025 at 6:56 PM
☄️ Starting tomorrow, October 13, we’ll have the most favorable days to observe with binoculars or image the comet C/2025 A6 (Lemmon). It will be visible at dusk, low over the northwest horizon, around magnitude 5.
All the info here 👇
ℹ️ cometografia.es/cometas-visi...
All the info here 👇
ℹ️ cometografia.es/cometas-visi...
📈Upcoming Bright Comets.
Updated and manually checked every week 🔄 based on REAL measurements 📏 from experienced observers, not on theoretical calculations like most apps do.
You can always find it here 👇
cometografia.es/proximos-com...
#astronomy #comet
Updated and manually checked every week 🔄 based on REAL measurements 📏 from experienced observers, not on theoretical calculations like most apps do.
You can always find it here 👇
cometografia.es/proximos-com...
#astronomy #comet
October 3, 2025 at 8:07 PM
📈Upcoming Bright Comets.
Updated and manually checked every week 🔄 based on REAL measurements 📏 from experienced observers, not on theoretical calculations like most apps do.
You can always find it here 👇
cometografia.es/proximos-com...
#astronomy #comet
Updated and manually checked every week 🔄 based on REAL measurements 📏 from experienced observers, not on theoretical calculations like most apps do.
You can always find it here 👇
cometografia.es/proximos-com...
#astronomy #comet
☄️New comet C/2025 R2 (SWAN) is now becoming visible from the Northern Hemisphere at dusk, low in the west-southwest horizon 🌄
With a magnitude 6 brightness, it can be seen with binoculars 👀 or captured with telephoto lenses 📷
🟫Not visible. 🟦Moonless.
ℹ️ cometografia.es/cometas-visi...
With a magnitude 6 brightness, it can be seen with binoculars 👀 or captured with telephoto lenses 📷
🟫Not visible. 🟦Moonless.
ℹ️ cometografia.es/cometas-visi...
October 1, 2025 at 5:09 AM
☄️New comet C/2025 R2 (SWAN) is now becoming visible from the Northern Hemisphere at dusk, low in the west-southwest horizon 🌄
With a magnitude 6 brightness, it can be seen with binoculars 👀 or captured with telephoto lenses 📷
🟫Not visible. 🟦Moonless.
ℹ️ cometografia.es/cometas-visi...
With a magnitude 6 brightness, it can be seen with binoculars 👀 or captured with telephoto lenses 📷
🟫Not visible. 🟦Moonless.
ℹ️ cometografia.es/cometas-visi...
📸🔭 October promises to be spectacular for comets:
☄️ C/2025 A6 (Lemmon) will reach magnitude 3–2 and be visible to the naked eye in dark skies.
☄️ C/2025 R2 (SWAN) will shine in binoculars, with long ion tails in photos.
We’ll keep following them day by day on these feeds so you don’t miss the show ✨
☄️ C/2025 A6 (Lemmon) will reach magnitude 3–2 and be visible to the naked eye in dark skies.
☄️ C/2025 R2 (SWAN) will shine in binoculars, with long ion tails in photos.
We’ll keep following them day by day on these feeds so you don’t miss the show ✨
September 29, 2025 at 7:16 PM
📸🔭 October promises to be spectacular for comets:
☄️ C/2025 A6 (Lemmon) will reach magnitude 3–2 and be visible to the naked eye in dark skies.
☄️ C/2025 R2 (SWAN) will shine in binoculars, with long ion tails in photos.
We’ll keep following them day by day on these feeds so you don’t miss the show ✨
☄️ C/2025 A6 (Lemmon) will reach magnitude 3–2 and be visible to the naked eye in dark skies.
☄️ C/2025 R2 (SWAN) will shine in binoculars, with long ion tails in photos.
We’ll keep following them day by day on these feeds so you don’t miss the show ✨
📸Comet C/2025 K1 (ATLAS) from Atacama a few days ago 🔭 just before becoming unobservable due to solar conjunction ☄️🌞
With a nice turquoise coma and two tails. If it survives, it will be visible again from the northern hemisphere at the end of October 🐻❄️
ℹ️ cometografia.es/2025k1-atlas...
#astrophoto
With a nice turquoise coma and two tails. If it survives, it will be visible again from the northern hemisphere at the end of October 🐻❄️
ℹ️ cometografia.es/2025k1-atlas...
#astrophoto
September 27, 2025 at 7:38 PM
📸Comet C/2025 K1 (ATLAS) from Atacama a few days ago 🔭 just before becoming unobservable due to solar conjunction ☄️🌞
With a nice turquoise coma and two tails. If it survives, it will be visible again from the northern hemisphere at the end of October 🐻❄️
ℹ️ cometografia.es/2025k1-atlas...
#astrophoto
With a nice turquoise coma and two tails. If it survives, it will be visible again from the northern hemisphere at the end of October 🐻❄️
ℹ️ cometografia.es/2025k1-atlas...
#astrophoto
☄️Comet C/2025 A6 (Lemmon) could be the brightest in a year, reaching mag 2 🔭👀
Here’s its light curve, with moonless nights in blue. After Nov 12 (red), it won’t be observable.
From the Southern Hemisphere below 20°S, it won’t be visible this apparition.
More info 👇
cometografia.es/cometas-visi...
Here’s its light curve, with moonless nights in blue. After Nov 12 (red), it won’t be observable.
From the Southern Hemisphere below 20°S, it won’t be visible this apparition.
More info 👇
cometografia.es/cometas-visi...
September 26, 2025 at 6:56 PM
☄️Comet C/2025 A6 (Lemmon) could be the brightest in a year, reaching mag 2 🔭👀
Here’s its light curve, with moonless nights in blue. After Nov 12 (red), it won’t be observable.
From the Southern Hemisphere below 20°S, it won’t be visible this apparition.
More info 👇
cometografia.es/cometas-visi...
Here’s its light curve, with moonless nights in blue. After Nov 12 (red), it won’t be observable.
From the Southern Hemisphere below 20°S, it won’t be visible this apparition.
More info 👇
cometografia.es/cometas-visi...
📸 Comet C/2025 A6 (Lemmon) three weeks ago, just as it began developing its tail ☄️
Imaged on August 30: magnitude 11, well-condensed green coma, ion tail emerging toward the west (2.5′).
Posted late, trying to catch up 😓
ℹ️ cometografia.es/2025a6-lemmo...
#astronomy #comet #astrophotography
Imaged on August 30: magnitude 11, well-condensed green coma, ion tail emerging toward the west (2.5′).
Posted late, trying to catch up 😓
ℹ️ cometografia.es/2025a6-lemmo...
#astronomy #comet #astrophotography
September 21, 2025 at 1:46 PM
📸 Comet C/2025 A6 (Lemmon) three weeks ago, just as it began developing its tail ☄️
Imaged on August 30: magnitude 11, well-condensed green coma, ion tail emerging toward the west (2.5′).
Posted late, trying to catch up 😓
ℹ️ cometografia.es/2025a6-lemmo...
#astronomy #comet #astrophotography
Imaged on August 30: magnitude 11, well-condensed green coma, ion tail emerging toward the west (2.5′).
Posted late, trying to catch up 😓
ℹ️ cometografia.es/2025a6-lemmo...
#astronomy #comet #astrophotography
Light curve of the new comet C/2025 R2 (SWAN) ☄️
According to it, the comet will stay between magnitude 7 and 6, observable with binoculars 👀, until its closest approach to Earth 🌍 at the end of October.
More info here 👇
ℹ️ cometografia.es/cometas-visi...
#astronomy #comet #swan #cometwatch
According to it, the comet will stay between magnitude 7 and 6, observable with binoculars 👀, until its closest approach to Earth 🌍 at the end of October.
More info here 👇
ℹ️ cometografia.es/cometas-visi...
#astronomy #comet #swan #cometwatch
September 18, 2025 at 6:59 PM
Light curve of the new comet C/2025 R2 (SWAN) ☄️
According to it, the comet will stay between magnitude 7 and 6, observable with binoculars 👀, until its closest approach to Earth 🌍 at the end of October.
More info here 👇
ℹ️ cometografia.es/cometas-visi...
#astronomy #comet #swan #cometwatch
According to it, the comet will stay between magnitude 7 and 6, observable with binoculars 👀, until its closest approach to Earth 🌍 at the end of October.
More info here 👇
ℹ️ cometografia.es/cometas-visi...
#astronomy #comet #swan #cometwatch
Going back and forth with the SWAN comet images full of donuts...
This morning I had a celestial inspiration — remember the misframed shots I took the day before? What if... they could be used to build a synthetic flat...? 🤔
⚙️⚙️⚙️⚙️
Voilà! It works! 🎉
#astronomy #comet #swan #astrophotography
This morning I had a celestial inspiration — remember the misframed shots I took the day before? What if... they could be used to build a synthetic flat...? 🤔
⚙️⚙️⚙️⚙️
Voilà! It works! 🎉
#astronomy #comet #swan #astrophotography
September 17, 2025 at 7:31 PM
Going back and forth with the SWAN comet images full of donuts...
This morning I had a celestial inspiration — remember the misframed shots I took the day before? What if... they could be used to build a synthetic flat...? 🤔
⚙️⚙️⚙️⚙️
Voilà! It works! 🎉
#astronomy #comet #swan #astrophotography
This morning I had a celestial inspiration — remember the misframed shots I took the day before? What if... they could be used to build a synthetic flat...? 🤔
⚙️⚙️⚙️⚙️
Voilà! It works! 🎉
#astronomy #comet #swan #astrophotography
I’ve got the L and RGB masters ready from yesterday’s shots of comet #SWAN25B. Let’s see what I can do with all those donuts 🍩 caused by overexposure 🌄 that the flats 💡 can’t fix. As for the scratches, let’s not even mention them — that’ll be half an hour of work courtesy of Eloncio.
September 14, 2025 at 7:35 PM
I’ve got the L and RGB masters ready from yesterday’s shots of comet #SWAN25B. Let’s see what I can do with all those donuts 🍩 caused by overexposure 🌄 that the flats 💡 can’t fix. As for the scratches, let’s not even mention them — that’ll be half an hour of work courtesy of Eloncio.
🚨 New bright comet SWAN25B ☄️ at mag 7.4 with a >1.7° ion tail! In Virgo, visible after sunset from the Southern Hemisphere 🌍 (very hard from the North). Orbit still uncertain. Imaged it from Atacama—coma slipped out 😅 but the huge tail is clear. Tomorrow I’ll try again 🔭 and share more! 😉
#astronomy
#astronomy
September 13, 2025 at 12:54 AM
🚨 New bright comet SWAN25B ☄️ at mag 7.4 with a >1.7° ion tail! In Virgo, visible after sunset from the Southern Hemisphere 🌍 (very hard from the North). Orbit still uncertain. Imaged it from Atacama—coma slipped out 😅 but the huge tail is clear. Tomorrow I’ll try again 🔭 and share more! 😉
#astronomy
#astronomy
📸 In the early hours of August 30 I captured my first image of comet C/2025 A6 (Lemmon) ☄️
It shows surprising activity: magnitude 11 with a striking green coma.
Excited to keep observing its evolution in the coming days 🔭
ℹ️ cometografia.es/2025a6-lemmo...
#astronomy #comet #astrpphotography
It shows surprising activity: magnitude 11 with a striking green coma.
Excited to keep observing its evolution in the coming days 🔭
ℹ️ cometografia.es/2025a6-lemmo...
#astronomy #comet #astrpphotography
September 7, 2025 at 5:54 PM
📸 In the early hours of August 30 I captured my first image of comet C/2025 A6 (Lemmon) ☄️
It shows surprising activity: magnitude 11 with a striking green coma.
Excited to keep observing its evolution in the coming days 🔭
ℹ️ cometografia.es/2025a6-lemmo...
#astronomy #comet #astrpphotography
It shows surprising activity: magnitude 11 with a striking green coma.
Excited to keep observing its evolution in the coming days 🔭
ℹ️ cometografia.es/2025a6-lemmo...
#astronomy #comet #astrpphotography
And here is the interstellar comet 3I/ATLAS that I captured last week from home.
I was only able to stack 7 frames so that the nearby star wouldn’t interfere and to be able to measure the comet’s brightness.
At magnitude 15.4 with a coma of 0.6 arcminutes
ℹ️ cometografia.es/cometas-visi...
#astronomy
I was only able to stack 7 frames so that the nearby star wouldn’t interfere and to be able to measure the comet’s brightness.
At magnitude 15.4 with a coma of 0.6 arcminutes
ℹ️ cometografia.es/cometas-visi...
#astronomy
September 5, 2025 at 7:47 PM
And here is the interstellar comet 3I/ATLAS that I captured last week from home.
I was only able to stack 7 frames so that the nearby star wouldn’t interfere and to be able to measure the comet’s brightness.
At magnitude 15.4 with a coma of 0.6 arcminutes
ℹ️ cometografia.es/cometas-visi...
#astronomy
I was only able to stack 7 frames so that the nearby star wouldn’t interfere and to be able to measure the comet’s brightness.
At magnitude 15.4 with a coma of 0.6 arcminutes
ℹ️ cometografia.es/cometas-visi...
#astronomy
📸 On Aug 21 I also imaged comet C/2025 K1 (ATLAS) ☄️ from home.
Poor transparency and wildfire smoke ❤️🔥😢 but still showing a 1.5′ coma and 5.5′ tail in a field with small galaxies 🌀 between Serpens and Hercules 👇
ℹ️ cometografia.es/2025k1-atlas...
#astronomy #comet #astrophotography
Poor transparency and wildfire smoke ❤️🔥😢 but still showing a 1.5′ coma and 5.5′ tail in a field with small galaxies 🌀 between Serpens and Hercules 👇
ℹ️ cometografia.es/2025k1-atlas...
#astronomy #comet #astrophotography
September 3, 2025 at 7:36 PM
📸 On Aug 21 I also imaged comet C/2025 K1 (ATLAS) ☄️ from home.
Poor transparency and wildfire smoke ❤️🔥😢 but still showing a 1.5′ coma and 5.5′ tail in a field with small galaxies 🌀 between Serpens and Hercules 👇
ℹ️ cometografia.es/2025k1-atlas...
#astronomy #comet #astrophotography
Poor transparency and wildfire smoke ❤️🔥😢 but still showing a 1.5′ coma and 5.5′ tail in a field with small galaxies 🌀 between Serpens and Hercules 👇
ℹ️ cometografia.es/2025k1-atlas...
#astronomy #comet #astrophotography
📸 Imaged comet C/2025 K1 (ATLAS) ☄️ on August 21, near the star 9 Herculis 🌟. Shining at mag 12.5, with a greenish 2′ coma and a ~20′ tail. It’s heading toward perihelion in October, with a high risk of disintegration ⚠️
ℹ️ cometografia.es/2025k1-atlas...
#astronomy #cometwatch #comet #astrophotography
ℹ️ cometografia.es/2025k1-atlas...
#astronomy #cometwatch #comet #astrophotography
August 24, 2025 at 7:49 AM
📸 Imaged comet C/2025 K1 (ATLAS) ☄️ on August 21, near the star 9 Herculis 🌟. Shining at mag 12.5, with a greenish 2′ coma and a ~20′ tail. It’s heading toward perihelion in October, with a high risk of disintegration ⚠️
ℹ️ cometografia.es/2025k1-atlas...
#astronomy #cometwatch #comet #astrophotography
ℹ️ cometografia.es/2025k1-atlas...
#astronomy #cometwatch #comet #astrophotography
The interstellar comet 3I/ATLAS barely changed between July 20 and August 15: a bit brighter (mag 16.5) and a slightly larger. Its evolution is slower than expected, though it could still increase in activity and become visible in amateur telescopes🔭. These are my first comet photometry using Tycho.
August 19, 2025 at 5:44 PM
The interstellar comet 3I/ATLAS barely changed between July 20 and August 15: a bit brighter (mag 16.5) and a slightly larger. Its evolution is slower than expected, though it could still increase in activity and become visible in amateur telescopes🔭. These are my first comet photometry using Tycho.
📸 I photographed comet C/2025 K1 (ATLAS) ☄️ again on July 21. Since my previous image, in just 15 days it gained a magnitude and its tail stretched to 3.5'. It's now entering the Milky Way 🌌, in Vulpecula 🦊. Still getting more interesting❗️🔭👇
ℹ cometografia.es/2025k1-atlas...
ℹ cometografia.es/2025k1-atlas...
August 6, 2025 at 7:00 PM
📸 I photographed comet C/2025 K1 (ATLAS) ☄️ again on July 21. Since my previous image, in just 15 days it gained a magnitude and its tail stretched to 3.5'. It's now entering the Milky Way 🌌, in Vulpecula 🦊. Still getting more interesting❗️🔭👇
ℹ cometografia.es/2025k1-atlas...
ℹ cometografia.es/2025k1-atlas...
📷 Comet C/2025 K1 (ATLAS)
This comet continues to brighten rapidly. I imaged it last night at magnitude ~14, showing a 3.5-arcminute ion tail. If the current trend holds, it could reach magnitude 8 by October — possibly becoming visible in binoculars from dark skies.
#astronomy #cometwatch #comet
This comet continues to brighten rapidly. I imaged it last night at magnitude ~14, showing a 3.5-arcminute ion tail. If the current trend holds, it could reach magnitude 8 by October — possibly becoming visible in binoculars from dark skies.
#astronomy #cometwatch #comet
July 22, 2025 at 8:28 PM
📷 Comet C/2025 K1 (ATLAS)
This comet continues to brighten rapidly. I imaged it last night at magnitude ~14, showing a 3.5-arcminute ion tail. If the current trend holds, it could reach magnitude 8 by October — possibly becoming visible in binoculars from dark skies.
#astronomy #cometwatch #comet
This comet continues to brighten rapidly. I imaged it last night at magnitude ~14, showing a 3.5-arcminute ion tail. If the current trend holds, it could reach magnitude 8 by October — possibly becoming visible in binoculars from dark skies.
#astronomy #cometwatch #comet
☄️ Comet C/2025 K1 (ATLAS) imaged a few days ago — still showing a small tail and magnitude 15. If it survives perihelion and maintains its activity, it could brighten to mag 7.5 and become visible with binoculars in October❗️👇
#astronomy #comets #cometwatch #astrophotography
#astronomy #comets #cometwatch #astrophotography
July 11, 2025 at 7:55 PM
☄️ Comet C/2025 K1 (ATLAS) imaged a few days ago — still showing a small tail and magnitude 15. If it survives perihelion and maintains its activity, it could brighten to mag 7.5 and become visible with binoculars in October❗️👇
#astronomy #comets #cometwatch #astrophotography
#astronomy #comets #cometwatch #astrophotography