A new comet, C/2025 T1 (ATLAS), was discovered earlier in October and it has brightened rapidly in just two weeks. Now it is around mag 11, has a round coma 4' and a short tail. It is near M101, in Ursa Major. Perihelion is in about a month, at 1.11 AU. #cometWatch

Against all odds, C/2025 K1 (ATLAS) has survived perihelion, which was at Mercury's orbit. The comet has emerged in the dawn sky and features a long ion tail, more than a degree long, with a distinct reddish color (contrary to the usual blue). #CometWatch

Comet Lemmon on 23 October, showing a very active and turbulent ion tail. Slightly different processing to not burn the nucleus. More info in alt. #cometWatch #astronomy #astrophotography #space

Comet Lemmon is hands down the third best comet of the last 10 years for the northern hemisphere. As easy with the naked eye as the Andromeda Galaxy, with a hint of tail 2-3 degrees long from dark skies! Unfortunately clouds were present at the direction of the comet. #cometWatch #astronomy

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

Comet C/2025 R2 (SWAN) passing near the Eagle Nebula on 17 October 2025, around 18:30 UTC. Nice pair visually through 8x50 binoculars. The comet is near its closest approach to Earth, at a distance of 39 million km. #cometWatch #astrophotography #space

Back to comet C/2025 A6 (Lemmon) today before dawn. What a development in 10 days. The tail barely fits in the lovely Samyang 135mm lens FOV. Sunflower and Croc's Eye galaxies are visible too. #cometWatch #astrophotography

A nice clear sky helped me photograph comet C/2025 A6 (Lemmon) on 1 October 2025. The ion tail is becoming brighter and full of streamers and the dust tail grows. #cometWatch #astrophotography

Comet C/2025 R2 (SWAN) finally cleared the twilight zone from southern Europe (and the clear atmosphere certainly helped despite the presence of some clouds). Coma is about 6' and the ion tail is visible too in this 10min exposure. #cometWatch

Comet C/2025 A6 (Lemmon) today. Coma is 8' across, smaller than a few days before, but dust tail is becoming more prominent. Also brightenening seems to have stalled, yet the nucleus and coma look good. I'll keep an eye on it. 🧐 #cometWatch #astronomy

Comet C/2025 A6 (Lemmon) looked gorgegous on the early hours of September 24, as the ion tail became again quite prominent. #cometWatch #astrophotography #comet #space

Periodic comet 240P/NEAT on 23 September 2025. Much brighter than initial predictions, it features a dust tail which up to its faintest extremities is 25 arcminutes long. Currently slowing down as it enters retrograde motion. #cometWatch #astrophotography #astronomy

Lovely image of two comets one next to the other from the southern hemisphere. Mars was also nearby. #cometWatch

Something different today. Comet 414P/STEREO is in the constellation of Leo, not far from Regulus and Venus, at an elogation of 29°. Perihelion is on 26/9. Small green coma, maybe a fain tail. #CometWatch

Comet C/2025 A6 (Lemmon) in the early hours of 16 September. Coma has grown to about 6-7 arcminutes, there is a faint ion tail about 20 arcminutes long and possibly a short ion tail has started growing. #cometWatch #astrophotography

Comet C/2025 A6 (Lemmon) on 6 September, before the Moon starts interfering fot the next two weeks. Mediocre to bad conditions due to high humidity. Nice green coma 4' and faint ion tail. Back again in about 10 days. #cometWatch #astrophotography

Comet C/2025 A6 (Lemmon) has started growing a faint ion tail as it brightens heading towards the Sun. #cometWatch #astrophotography

Comet C/2025 A6 on 25 August.

A more zoomed in view of comet C/2025 A6 (Lemmon). Typical greem coma is about 3 arcminutes across, mag. around 12. Image obtained on 23 August 2025, 02:00 UTC, from eastern Crete (B3). #cometWatch #astrophotography

Comet C/2025 A6 (Lemmon) is much brighter than current predictions (maybe around mag 13) and even visible in the individual 20s frames today before dawn. Hopefully it will be a nice binocular object in autumn. #cometwatch

Small comet C/2025 K1 (ATLAS) passing at the border of Hercules and Ophiuchus on 13-8-2025, 19:00 UTC. Coma about 0.5' and tail 5', doesn't appear to have grown larger the last half month despite the comet approaching both the Sun and Earth. #Cometwatch #astrophotography

The beautiful and historic cave of Melidoni in central Crete. A nice place to visit in a hot day. #crete #cave

Photo of the astroparty of the local astronomy club last weekend. Not many participants, but good food and clear skies. #night_sky #astrophotography #Crete

Small comet C/2025 K1 (ATLAS) at mag ~14 is the brightest comet in the sky right now. Tail is about 5' long. Currently in the constellation of Vulpecula, it approaches rapidly Earth next month. #cometwatch #astrophotography #comet

The Cocoon nebula (IC 5146) in Cygnus. Slightly over 4 hours of data with an unmodified camera from a B4.5 sky. Unfortunately the dust isn't well visible. #astrophotography #nebula #nightsky

2.000+ new asteroids discovered in a single night! Vera Ruin Observatory is flexing its capabilites from its first light. rubinobservatory.org/gallery/coll...

Venus and Saturn conjuction on 26 April from Greece. The Moon also appear, creating a smiley but rather long face in the dawn sky. #sunrise #Moon #Venus #dawn #astrophotography

Yesterday was a cloudless, windless and moonless night, a perfect opportunity to visit in a nearby dark site. One of the targets was the Pinwheel Galaxy, the massive galaxy near the Ursa Major and Bootes border (more details in alt). #galaxy #astrophotography

The nucleus of comet C/2025 F2 (SWAN) on the early hours of April 17. The nucleus is diffuse, the coma is elongated and the ion tail is pretty much gone. It is quite clear the comet has in large part disintergrated. #cometwatch

After a few cloudy mornings, back to imaging comet C/2025 F2 (SWAN). Despite the bright moonlight about one degree of tail is visible. 146x8s frames stack in DSS, total exposure 19m28s. Focal length is 135mm, but the image is quite cropped. #cometwatch #astrophotography

Comet SWAN 25F today before dawn. The ion tail is becoming more prominent as the comet plunges towards the Sun. Coma 5' across. Mag ~9. Inverse green channel image. #comet #cometwatch

Comet SWAN 25F, 6 April 2025, 2:18-2:51 UTC. Brightening quickly, mag 9 (?), coma 3', ion tail extending beyond the edge of the frame (so >50' long). GSO N203/800 telescope, 53X30s. #comet #cometwatch

New comet SWAN, located in Pegasus Quarter (rough coordinates 23h15m06s, +22°42'30") on 3 April 2025, 2:40 UTC. Coma about 2' across. A hint of tail. Mag ~11 (?). 26x20s ISO 800, Samyang 135mm f/2 + MILC, tracked. Location, Siteia, Crete. #cometwatch #comet #discovery

Spiral galaxy NGC 2997 barely rises 20° above the south horizon from Greece. Pointed my telescope for about an hour to obtain this image of that beautiful object. #galaxy #astrophotography

How the mighty have dimmed... C/2023 A3 (Tsuchinshan-ATLAS), the great comet of 2024, on 8 March 2025, 3.5 AU from Sun. #cometwatch #astrophotography

Λίγοι λαμπεροί κομήτες αυτή τη στιγμή στον ουρανό, ιδίως κοντά στο ανθήλιο. Αυτό το σημαδάκι ανάμεσα στα άστρα είναι ο P/2023 S1, μέγεθος 15. Νευτώνειο 8inch f/4, 80x30s. #cometwatch #comet

Ο γαλαξίας νάνος IC 1613. Αυτό το σχετικά αχνό μέλος της τοπικής ομάδας βρίσκεται στον αστερισμό του Κήτους. Συνολικός χρόνος λήψης 1 ώρα 50 λεπτά, ημερομηνία λήψης 30 Νοεμβρίου 2024. #astrophotography #galaxy

Οι γαλαξίες Μ95 και Μ96 στον αστερισμό του Λέοντα. Αυτό το όμορφο ζεύγος ίσα ίσα που χωρά στο πεδίο του τηλεσκοπίου (800mm). Συνολικός χρόνος λήψης 75 λεπτά. #astrophotography #galaxies

Ο κομήτης 29P/Schwassmann-Wachmann τις 23 Ιανουαρίου 2025, μετά από μία ακόμη έκρηξη. 41x50s, 70mm f/6 ED Douplet με 0.8 reducer. #cometwatch #comet

Όμορφος νότιος κομήτης

Αφηρημένη τέχνη: κομήτης Πονς-Μπρουκς, φεγγάρι και Δίας. Στις 10 Απριλίου 2024 ο Pons-Brooks πέρασε κοντά από την Ημισέληνο και τον Δία και τον κυνήγησα με τον Samyang 135mm f/2. Κατά τη διάρκεια της επεξεργασίας προέκυψε αυτή η εικόνα. #Pons-Brooks #comet #throwback