Tootfinder

What #comet C/2025 R3 (PANSTARRS) looks like now - for a 12-inch telescope in Namibia last evening, by Gerald Rhemann & Michael Jäger: the dust tail, lacking the forward scatter enhancement around solar conjunction, is invisible again, the plasma tail is just as gorgeous as in April.

The #comet 220P/McNaught has suffered a major outburst and shines now - in this Rhemann / Jäger image from a few hours ago with a faint plasma tail even - at about 8th magnitude: https://groups.io/g/comets-ml/topic/119599952 = a thread, https://bsky.app/profile/lukemeister.bsky.social/post/3mndaubc3yc2o = the light curve, https://www.facebook.com/photo/?fbid=26645019731865080 and https://www.facebook.com/photo/?fbid=10240107345718051 and https://www.facebook.com/photo/?fbid=2951292725202094 and https://www.facebook.com/photo/?fbid=4432053177009520 and https://x.com/kpheider/status/2061792077248360768 = pictures from 2 June.

A Potential Signature of HD 7977's Passage Among Observed Long-Period #Comet Orbits: https://arxiv.org/abs/2606.25069 -> Long-Period Comets’ Orbits Reflect Close Passage by Star HD 7977: https://www.psi.edu/blog/long-period-comets-orbits-reflect-close-passage-by-star-hd-7977/

Electron Affinity of the Carbon Dimer from Threshold Photodetachment Spectroscopy: #comet spectra) -> Prä­zi­si­ons­mes­sung lie­fert neuen Rekord­wert: https://www.uibk.ac.at/de/newsroom/2026/prazisionsmessung-liefert-neuen-rekordwert/ - ein Team um den Inns­bru­cker Physiker Roland Wester hat eine funda­men­tale Eigen­schaft des Kohlen­stoff-Dimers mit bisher uner­reichter Genau­ig­keit im Labor bestimmt.

Byebye, #comet C/2025 R3 (PANSTARRS), now also exiting the LASCO C3 FOV: time lapses at https://www.facebook.com/watch/?v=1006143605637463 and https://www.facebook.com/watch/?v=1991576091447497, a 9:30 UTC still with the funny new tail feature better visible at https://bsky.app/profile/huubeggen.bsky.social/post/3mkfkihl36c2g, CCOR time lapses at https://x.com/frapepppemaria/status/2048282309007167965 and https://x.com/swnews/status/2048180407045390411 and https://bsky.app/profile/aretsch.bsky.social/post/3mke2h5qxfk2d and a HI2 time lapse - with the plasma tail wagging - at https://x.com/swnews/status/2048007525757604173.

The #comet C/2025 R3 (PANSTARRS) will soon leave the FOV of CCOR-1: cropped pictures from 18:15 and 21:30 UTC on 25 April - and the also the bottom of https://skyweek.wordpress.com/2026/04/15/das-zodiakallicht-hinter-dem-mond-und-die-venus/ for many more images!

The #comet C/2025 R3 (PANSTARRS) is joined by a nice CME in the CCOR-1 image from 22:00 UTC.

The #comet C/2025 R3 (PANSTARRS) is now also in the field of view of the coronagraph CCOR-1: https://ccor.nrl.navy.mil/ccor_realtime/last_image_MinBckgnd.png = the latest image (the one here is from 14:00 UTC), https://ccor.nrl.navy.mil/realtime-movie = an animation up to now (and see https://soho.nascom.nasa.gov/data/realtime/c3/1024/latest.html for the LASCO C3 view).