#ponsbrooks

2024-05-04

Another timelapse of comet Pons Brooks setting behind Kapiti Island, New Zealand.
Taken over an hour and twenty minutes from 6:26pm NZST this evening 4May2024.
#comet #PonsBrooks #cometPonsBrooks #astronomy #satellites

Reed Midekereedmideke
2024-04-23

below Jupiter sinking into the murk on April 11. Probably my last opportunity for this one

A noisy, heavily processed night sky scene, with blurry artifacts around the horizon from foreground object. In the center just above the horizon is the comet, which appears as a relatively bright smudge with a clearly visible tail pointing almost straight up. Jupiter is a bright disk near the center of the image, slightly to the left of the comet, surrounded by a ragged halo
Australian Geographicausgeo@newsmast.social
2024-04-22

Turn your eyes to the sky for a two-for-one astronomical spectacle as the 'devil comet' finally creeps into view for the southern hemisphere just in time for the Lyrid meteor shower! ☄️

The Comet Pons–Brooks is visible to the naked eye, but only if you know where to look.

Want to see it for yourself? Check out our guide… ausgeo.co/devilcomet

#ausgeo #australia #seeaustralia #comet #devilcomet #cometponsbrooks #ponsbrooks #sky #space #astronomy #astro #star #stars #galaxy #spacephotography #as
#space #astronomy #astrodon

Neoprogneoprog
2024-04-20
Pons-Brooks 12P
Benjamin Knispelbenknispel@chaos.social
2024-04-12

Unser Mond, der Planet Jupiter und Komet Pons-Brooks am Mittwochabend aus der Wedemark nördlich von Hannover.

Our Moon, the planet Jupiter, and comet Pons-Brooks on Wednesday evening. Picture taken north of Hannover, Germany.

#PonsBrooks #Astrofotografie #astrophotography #Astronomie #Astronomy #Komet #Comet

Ein Foto des abendlichen Dämmerungshimmels, der am Horizont orange, weiter oben dunkelblau ist. Der Horizont ist verwaschen. Am Himmel viele Sterne, ein sehr helles überbelichtetes Objekt (Mond), ein sehr heller „Stern“ (Jupiter) und ein kleiner Komet mit erkennbarem Schweif.

A photo of the evening twilight sky, which is orange on the horizon and dark blue further up. The horizon is blurred. There are many stars in the sky, a very bright overexposed object (moon), a very bright “star” (Jupiter) and a small comet with a recognizable tail.
Reed Midekereedmideke
2024-04-12

(bottom center) below the last night, a bit later, more exposure and more frames than the previous shot. Again somewhat fake: Composite of the same stack aligned separately on the moon and stars.
Also visible: , Callisto, Ganymede, maybe Europa if you squint at the glare around Jupiter, and (relatively bright blueish object almost directly above Jupiter)

A night sky. A the top, the lit part of the crescent moon is over-exposed and drowned in glare, while the unlit part is quite brightly lit from earth shine. A foggy halo surround the moon. The next brightest thing, below and to the left of the moon is Jupiter, also over-exposed, with bright dots of Callisto and Ganymede almost lost in the glare. Almost directly above Jupiter is a fairly bright bluish "star" which is Uranus. At the bottom center, the comet is a greenish smudge with a faint tail pointing up.
Neoprogneoprog
2024-04-11

La comète a rendez-vous avec la lune

Pons-Brooks 12P
AkaSci 🛰️AkaSci@fosstodon.org
2024-04-11

The green color seen in the coma of most comets, but not in their tails, is due to emissions from Diatomic carbon C2 (aka dicarbon) molecules.

Sunlight heats the comet’s ice and organic material to produce C2 molecules, which break apart in ~2 days before they reach the tail. C2 is excited by solar UV radiation and emits mostly in infrared but its triplet state radiates at 518 nm (d3Πg → a3Πu transition below).

physicstoday.scitation.org/do/
pnas.org/doi/10.1073/pnas.2113
#dicarbon #PonsBrooks
5/n

1. Graphic of Diatomic carbon. Source: https://www.researchgate.net/figure/Dicarbon-moleculeThe-original-figure-is-from-4-Used-under-Creative-Commons-License_fig4_328571186

2. Graph from paper showing emissions at various energy levels. The green fluorescence of C2 in comets is due to d3Πg → a3Πu emission (Swan bands).
Reed Midekereedmideke
2024-04-11

(very faintly visible, upper left) over the last night. This is a somewhat fake composite of 100 4 second frames, aligned separately on the stars, moon and foreground. Too close to twilight to get much of the comet

Crescent moon, with the crescent heavily overexposed and the rest of the disk well lit from earth shine, setting over some blurry and somewhat distorted bushes, flowers and a rooftop against a very blue sky. A few stars are faintly visible along with a slightly smudgier "star" which is the comet
kernpanik 🐾 🕊️ ☮kernpanik@chaos.social
2024-04-10

Too bad: The clouds were eventually gone, but when it finally got dark enough to make out #Comet12p #PonsBrooks on the photos of my amateur camera, it disappeared behind the trees. So, no chance of getting a shot of its tail. 🙁

Still: A nice constellation of the crescent Moon, Jupiter (with three of its own moons), and Uranus. 🙂

(photos: @kernpanik | license: public domain as described in CC-0 creativecommons.org/publicdoma)

Photo of a night sky with a crescent Moon and a few stars.Photo of a night sky with a crescent Moon and a few stars. Uranus, Jupiter, and Comet 12P Pons-Brooks are labelled.
2024-04-10

Spektakel am Himmel: So seht ihr den Kometen Pons-Brooks am besten

12P/Pons-Brooks ist ein seltener Komet, der nur etwa alle 71 Jahre zu sehen ist. Wie und wo das heute in Deutschland möglich ist, hier lesen!

swr3.de/aktuell/nachrichten/ko

#Komet #Deutschland #PonsBrooks #Himmell

12P/Pons-Brooks ist ein seltener Komet, der nur etwa alle 71 Jahre zu sehen ist. Wo und wie ihr ihn heute in Deutschland sehen könnt, hier lesen! (Foto: dpa Bildfunk, picture alliance/dpa/AZM | Michael Jäger)
Reed Midekereedmideke
2024-04-03

of the frames used for that shot up thread. So many more satellites, a few years ago I'd expect maybe 3-4 or in a shot like this. Doesn't really affect anything in this case (unlike the airplanes, which were bright enough to show up in a 240 frame average after stretching) but definitely noticeable
flic.kr/p/2pH2hqi

Reed Midekereedmideke
2024-04-03

last night. Proper tail now, even with my unguided 10 year old P&S (Canon G7 X, 240x5s, ISO 800, 100mm EFL, aligned on the comet and stacked with hacky scripts and tortured in )

Night sky, with colorful stars and ugly noise between them, fading into brownish muck near the horizon, with some dark streaky artifacts of foreground objects blurred by stacking images aligned on the stars. The comet is toward the lower right, just above the worst of the muck with a green central coma and slightly bluegreenish tail fading to toward the upper right
Benjamin Knispelbenknispel@chaos.social
2024-03-29

Hmmm… es sieht so aus als könnte es morgen Abend hier klar sein. Ich sollte wohl die Chance nutzen, Jupiter, Merkur und Komet 12P/Pons-Brooks gemeinsam auf den Chip zu bekommen. Bei f=50 mm passen die alle gemeinsam drauf und ich habe hier am Feldrand einen sehr niedrigen Horizont (norddeutsches Flachland sei Dank!).

Simulation mit Stellarium sieht vielversprechend aus…

#Astronomie #Astrofotografie #Merkur #Jupiter #Komet #PonsBrooks

Simulation des abendlichen Sternenhimmels am Westhorizont.Simulation des abendlichen Sternenhimmels am Westhorizont, zudem ist eine rot umrandete Fläche eingezeichnet, die das Bildfeld einer Kamera mit einem 50-mm-Objektiv darstellt.
2024-03-28
Komet und Sternschnuppe
18.03.2024, 19:45 Uhr MEZ/CET

🇩🇪 Wer findet den Kometen P12/Pons-Brooks?
🇬🇧 Can you find P12/Pons-Brooks?

#NikonD7200 | 35mm | f/2,0 | 5 Sek. | ISO 1000
#12PPonsBrooks #PonsBrooks #Komet #Sternschnuppe #Astrofotografie #comet #shootingstar #astrophotography
DE: Abendlicher Blick über ein Feld mit Bäumen und weiter hinten einer Brücke. Nur wer genau hinschaut, erkennt im oberen Drittel rechts eine Sternschnuppe und davon etwas unterhalb auf der linken Seite den Komet P12/Pons-Brooks. Bei genauerer Betrachtung kann man dessen Schweif nach rechts-oben zeigend erahnen.

EN: Evening view over a field with trees and a bridge further back. Only those who look closely can recognise a shooting star in the upper third on the right and, slightly below it on the left, the comet P12/Pons-Brooks. On closer inspection, you can see its tail pointing upwards to the right.DE: Ausschnitt aus der Szenerie: Links sieht man in türkis den Komenten, auf der rechten Seite die Sternschnuppe.

EN: A cropped version with the shooting star on the right and P12/Pons-Brooks on the left side.
Philippe Smetpfsmet
2024-03-28

Three protagonists of the evening sky!
(top left), (bottom middle, just above the roof) and comet right above the church tower. For those wanting to spot the , this should give some guidance where to find it (as well as some impression on how bright it currently is).

Photo of the sky, direction West. In the front, the roofs of houses and a church are visible. Several stars can be seen, a plane and a satellite, in addition to the planets Jupiter (very bright), Mercury and the fuzzy dot, the comet.
scinexx - das wissensmagazinscinexx@nrw.social
2024-03-27

Ein „Teufelskomet“ zu Ostern: Der Komet 12P/Pons-Brooks, ein "großer Bruder" des Halleyschen Kometen, ist jetzt am Himmel zu sehen. #Komet #12PPonsBrooks #Teufelskomet #PonsBrooks #Astronomie
scinexx.de/news/kosmos/ein-teu

kernpanik 🐾 🕊️ ☮kernpanik@chaos.social
2024-03-25
A noisy, low-quality photo of a night sky with some stars and a comet near the center.
kernpanik 🐾 🕊️ ☮kernpanik@chaos.social
2024-03-25

How convenient: #Comet 12P #PonsBrooks was “visible” from our living room window tonight right after dinner. So I took the chance to take some photos with my hobby equipment, which is hardly made for #astrophotography (at least I had a Bahtinov mask to help focussing).

Camera: #FujifilmXT2 mirrorless
Lens: #Fujinon #XF150to600 @ 600mm F/8

This is a stack of 8 photos, processed by hand in Adobe Photoshop.

#Fujifilm #Comet12P #12PPonsBrooks
(photo: @kernpanik | license: creativecommons.org/publicdoma)

A low-quality photo of a night sky with some stars and a green comet near the center.

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