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#comet

8 posts7 participants1 post today
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Random Astronomy Pictures OTD

APOD from 2023-01-09

Tails of #Comet ZTF

Comet ZTF, discovered last year, is brightening and may soon be visible without binoculars. Its closest approach to the Sun could reveal its three blue ion tails and green glowing coma to northern skywatchers with clear skies. However, comet brightness predictions are uncertain. After nearing Earth in early February, it's expected to fade.

HD image at apod.nasa.gov/apod/ap230109.ht

Tails of Comet ZTF
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TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️

New comet discovered that is already an easy object in amateur telescopes, and should brighten for the next 3 - 4 weeks. Get your binoculars and cameras ready.

C/2025 F2 (SWAN)

Currently in the morning sky and will transition to the evening sky in late April. (See screenshots for more info and finder charts.)

skyandtelescope.org/astronomy-

Comet finder chart for morning of 21 April, comet low in northeast near the horizon. Comet might be magnitude 5. Moon is last quarter. Red line approximates the horizon.
Comet finder chart for evening of 31 April in the northwest sky, low to horizon. Comet *might* be magnitude 2.5. Moon is only three days old. Red line approximates the horizon.
Predicted light curve of the comet through early May.
Some stats on how close and bright the comet will get during closest approach at the beginning of May.
#Comet#Astronomy#Astrophotography
Continued thread
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Daniel Fischer

The visibility conditions for comet C/2025 F2 (SWAN) through perihelion and maximum brightness for 51.5° North - see facebook.com/dan.fischer.393/p for explanations of the table! In a nutshell, in Central Europe the comet is higher at a given degree of sky darkness in the morning until about 23 April, then in the evening. So expect it at 3 to 5 mag. low at dusk: if the #comet makes it and keeps its fine tail this *may* become a fine nightscape photo opp - but not a significant show for the naked eye.

Columns of numbers - I can't see how a useful ALT text for such a table would look like, sorry ...
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CBC Technology Science

There's a new comet in the sky, and it's already visible through binoculars
One of the great things about astronomy is that it’s always full of surprises, especially when it comes to comets — you just can’t predict new ones. But there’s a lot of buzz around a recently discovered comet that has quickly brightened.
#astronomy #science #space #comet #News
cbc.ca/news/science/comet-swan

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CosmicRami

A new comet has appeared - Comet SWAN25F.

It's still in the process of being catalogued. Discovered by Aussie amateur astronomer Michael Mattiazzo.

It is brightening to binoc level observability. Its tail is long, about 2 degrees

This image was taken by Michael Jäger and Gerald Rhemann.

a bright, green comet with a small, round nucleus and long wispy tail stretching behind it. The background is a field of stars.
#Comet#Astrophotography#Astronomy
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Jorma Ryske

Here #comet #SWAN25F images taken today early morning 8th April from my remote observatory at Spain. SWAN25F is quite low in the morning sky near Pegasus square upper area between stars Alpheratz and Scheat. It's magnitude is about 9, tail visible almost one degree toward PA 300deg and coma diameter is 5'. Animation 18x30sec in the link below shows also moving tail details.
More info here taivaanvahti.fi/observations/s

Color image of comet SWAN25F, coma is glowing green/turquoise beccause C2 ions emission.
Black and white image of comet showing quite long tail almost 1 degree toward image upper right corner position angle 300 degree.
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Jorma Ryske

Here #comet #SWAN25F images taken today early morning 8th April from my remote observatory at Spain. SWAN25F is quite low in the morning sky near Pegasus square upper area between stars Alpheratz and Scheat. It's magnitude is about 9, tail visible almost one degree toward PA 300deg and coma diameter is 5'. Animation 18x30sec in the link below shows also moving tail details.
More info here taivaanvahti.fi/observations/s

Color image of comet SWAN25F, Green/turquoise coma is glowing because of C2 ions emission.
Black and white image show comets quite long tail almost 1 degree toward upper right
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