Search found 91 matches
- Mon Mar 18, 2024 10:15 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Comet Pons-Brooks' Swirling Coma (2024 Mar 18)
- Replies: 8
- Views: 863
Re: APOD: Comet Pons-Brooks' Swirling Coma (2024 Mar 18)
In my opinion the intensity of the red and the swirl structure as a whole is largely processing artifacts. That is not to say comets can't have a spiral structure, just that what is seen here is (very) overblown. The spiral structure has been noted by other others and does appear to be real. There ...
- Sun Mar 10, 2024 7:32 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Comet Pons-Brooks in Northern Spring (2024 Mar 09)
- Replies: 6
- Views: 879
Re: APOD: Comet Pons-Brooks in Northern Spring (2024 Mar 09)
Great timelapse, Knight! It's interesting that the two comets are so different. Comet Neowise, at least in your video, had a bright broad yellow dust tail and a barely discernible ion tail. For comet Pons-Brooks, the situation is reversed. The blue ion tail is very noticeable, but I can hardly see ...
- Sat Mar 09, 2024 8:26 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Comet Pons-Brooks in Northern Spring (2024 Mar 09)
- Replies: 6
- Views: 879
Re: APOD: Comet Pons-Brooks in Northern Spring (2024 Mar 09)
That's a gorgeous image. Definitely a composite to get that much depth on Andromeda but it's been done very skillfully, it looks natural. I'll be keeping an eye on this comet. I don't believe it's expected to become more than faintly visible to the naked eye but it should be good through binoculars ...
- Sun Feb 18, 2024 7:05 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Hoag's Object: A Nearly Perfect... (2024 Feb 18)
- Replies: 14
- Views: 1819
Re: APOD: Hoag's Object: A Nearly Perfect... (2024 Feb 18)
That's a spectacular collection of peculiar galaxies @Ann. Or should that be a peculiar collection of spectacular galaxies?
- Sat Jan 27, 2024 10:23 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Epsilon Tauri: Star with Planet (2024 Jan 26)
- Replies: 18
- Views: 2122
Re: APOD: Epsilon Tauri: Star with Planet (2024 Jan 26)
That makes sense as does Ann pointing out that dust can have an effect on the color of a stars halo. Thanks for clarifying. Dust is a possibility but I also wonder if it could be an optical artifact, perhaps a reflection in a filter. It's very challenging to take such a deep image with such a brigh...
- Sat Jan 27, 2024 10:19 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Epsilon Tauri: Star with Planet (2024 Jan 26)
- Replies: 18
- Views: 2122
Re: APOD: Epsilon Tauri: Star with Planet (2024 Jan 26)
Just to clarify, the prominent point of light at 3 o'clock to Epsilon Tauri, is not the planet, correct? That's correct, very few exoplanets have been directly imaged and I don't believe any are within reach of an amateur telescope. The planet was detected in 2006 using the radial velocity method. ...
- Fri Jan 26, 2024 10:58 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Epsilon Tauri: Star with Planet (2024 Jan 26)
- Replies: 18
- Views: 2122
Re: APOD: Epsilon Tauri: Star with Planet (2024 Jan 26)
Color Commentator asks: This is a red giant star? Ann I wondered if the image had been mislabelled but looking on DSS the starfield matches. It's a nice image with the star framed by the dust but looks like something has gone badly wrong with the colour calibration. Which is strange, as there are p...
- Sat Jan 13, 2024 9:59 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Circling the Sun (2024 Jan 13)
- Replies: 28
- Views: 22130
Re: APOD: Circling the Sun (2024 Jan 13)
Okay, Chris (and Donald). What the heck is a 22 o halo? The halo is just a circle. How can it be 22 o ? Bear in mind that I'm unbelievably thick when it comes to math, so if you have to show me some math formulas, you may as well not bother and I'll just accept that the circle is 22 o and give the ...
- Tue Jan 09, 2024 9:49 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Snows of Churyumov-Gerasimenko (2024 Jan 06)
- Replies: 15
- Views: 24672
Re: APOD: The Snows of Churyumov-Gerasimenko (2024 Jan 06)
The reason why NGC 2362 looks like that is that the B-type members are perfectly spherically distributed around the supergiant central star, Tau Canis Majoris. I know of no other open cluster that looks like that. Compare it, for example, with NGC 3293, which is quite rich, compact and spherical as...
- Mon Jan 08, 2024 8:06 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Snows of Churyumov-Gerasimenko (2024 Jan 06)
- Replies: 15
- Views: 24672
Re: APOD: The Snows of Churyumov-Gerasimenko (2024 Jan 06)
The only cluster I can think of that bears the slightest resemblance to it is NGC 2362, the Tau Canis Majoris cluster. ... Ann Wow. Great call Ann, I was able to plate solve @johnnydeep's screengrab and that's what it came up with too. https://worldwidetelescope.org/webclient/?wtml=http%3A%2F%2Fwwt...
- Tue Jan 02, 2024 12:33 pm
- Forum: The Observation Deck: Latest Sky Photography
- Topic: Submissions: 2024 January
- Replies: 82
- Views: 218266
Re: Submissions: 2024 January
The Hurlers by Moonlight https://www.caradonobservatory.com/articles/the-hurlers-by-moonlight https://www.facebook.com/caradonobservatory/ Copyright: Michael Bennett https://live.staticflickr.com/65535/53437791604_d2b0b7a7b5_c.jpg Original image link: https://www.flickr.com/photos/192659649@N06/534...
- Wed Oct 18, 2023 7:31 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Dust and the Western Veil Nebula (2023 Oct 18)
- Replies: 8
- Views: 13489
Re: APOD: Dust and the Western Veil Nebula (2023 Oct 18)
The witch's broom appears to be a functional space broom, it's sweeping dust away from the centre of the Veil.
- Fri Oct 13, 2023 12:52 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Hydrogen Clouds of M33 (2023 Oct 13)
- Replies: 14
- Views: 17685
Re: APOD: Hydrogen Clouds of M33 (2023 Oct 13)
I wonder if those large bubble nebulae are closer in nature to Barnard's Loop rather than something like the Rosette?
- Tue Sep 19, 2023 11:13 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: HH 211: Jets from a Forming Star (2023 Sep 19)
- Replies: 16
- Views: 4361
Re: APOD: HH 211: Jets from a Forming Star (2023 Sep 19)
And hopefully I have managed to show you the approximate position of HH211, the star of today's APOD. Do note the fantastic long arcs of gas and dust in the picture! Think you've got it right Ann. It's part of the mostly hidden IC348 complex which is best viewed in infra-red: http://viewer.legacysu...
- Tue Sep 12, 2023 11:34 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Galaxy Cluster Abell 370 and Beyond (2023 Sep 12)
- Replies: 28
- Views: 14594
Re: APOD: Galaxy Cluster Abell 370 and Beyond (2023 Sep 12)
But another question, why do distant object not raise spikes? It's because stars are point sources whereas distant galaxies have a measurable angular size, with their light spread out over a larger area. (In reality any light entering the telescope will diffract but most of the light ends up in a p...
- Mon Sep 11, 2023 8:08 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Beautiful Comet Nishimura (2023 Sep 11)
- Replies: 13
- Views: 8367
Re: APOD: Beautiful Comet Nishimura (2023 Sep 11)
That's a beautiful image. But as for the background stars, can anyone help me? What is the bright star seen immediately to the upper left of the comet's coma? I'm thinking that it might just be Regulus, because obviously Venus is seen in the east in the morning, and Regulus should be somewhere in th...
- Sat Sep 09, 2023 9:36 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Comet Nishimura Grows (2023 Sep 09)
- Replies: 14
- Views: 2607
Re: APOD: Comet Nishimura Grows (2023 Sep 09)
I was lucky enough to see Neowise from Bodmin Moor dark sky park in 2020 and made this timelapse (the annotations on the stacked image were inspired by an APOD): https://youtube.com/shorts/iWtgyLQd8ik?si=jwvFZwrl9gh4qdw2 Unfortunately sounds like Nishiimura won't be nearly as bright and will be tric...
- Tue Jul 11, 2023 8:36 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Sunspots on an Active Sun (2023 Jul 11)
- Replies: 11
- Views: 2193
Re: APOD: Sunspots on an Active Sun (2023 Jul 11)
It's certainly active, I was able to photograph the aurora from Southern England. Let's hope it doesn't get too active...
- Mon Jun 12, 2023 8:13 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Largest Satellites of Earth (2023 Jun 12)
- Replies: 10
- Views: 2999
Re: APOD: The Largest Satellites of Earth (2023 Jun 12)
Marvelous photo ! Both of them would have been travelling at a fair rate of knots - in different directions ? - so capturing them in the one image in focus must have taken some doing/precision . (As a sequence of images ? ) The technique is to track the Moon (any motorized telescope mount will do t...
- Tue Apr 25, 2023 4:24 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Northern Lights over Southern Europe (2023 Apr 25)
- Replies: 8
- Views: 3932
Re: APOD: Northern Lights over Southern Europe (2023 Apr 25)
Managed to see it from the Southern UK and get this 2 hour timelapse:
https://youtu.be/_9M3nIdcJVQ
Unfortunately I'd had a couple beers so couldn't drive up to the moors to find a better vantage point. Glad I set up the camera though.
Click to play embedded YouTube video.
Unfortunately I'd had a couple beers so couldn't drive up to the moors to find a better vantage point. Glad I set up the camera though.
- Tue Feb 14, 2023 12:03 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Heart and Soul Nebulas (2023 Feb 14)
- Replies: 12
- Views: 3586
Re: APOD: The Heart and Soul Nebulas (2023 Feb 14)
I made this HaRGB/IR composite image using WISE data to show how the stellar winds from the hot stars at its core have swept the dust from the centre of the Heart nebula: https://stargazerslounge.com/uploads/monthly_2022_09/1009019510_HeartSidebySide.JPG.6a7e387516a994a632028f49898a4411.JPG It's the...
- Mon Feb 06, 2023 8:34 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: In the Heart of the Rosette Nebula (2023 Feb 06)
- Replies: 15
- Views: 4517
Re: APOD: In the Heart of the Rosette Nebula (2023 Feb 06)
The NGC 2244 star cluster (whose most massive members ionize the Rosette Nebula and make it glow) is not evolved. I'm probably not using the terminology correctly, but by 'evolved' I mean the nebula is at a late stage of star formation. The stars in the core are on the main sequence and stellar win...
- Mon Feb 06, 2023 2:12 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: In the Heart of the Rosette Nebula (2023 Feb 06)
- Replies: 15
- Views: 4517
Re: APOD: In the Heart of the Rosette Nebula (2023 Feb 06)
It really has that much oxygen (blue) here? What's the source of this huge oxygen production? There are a couple possibilities I can think of here, hopefully someone more knowledgeable can shed more light on this. The Rosette is an evolved star forming nebulae, stellar winds from the young bright s...
- Fri Jan 20, 2023 10:47 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Galaxy Wars: M81 and M82 (2023 Jan 20)
- Replies: 14
- Views: 3677
Re: APOD: Galaxy Wars: M81 and M82 (2023 Jan 20)
There is an interesting image on this page with hydrogen-line radio data added, which shows the gas bridge between these galaxies: https://theastroenthusiast.com/the-interacting-triplet-of-m81-m82-and-ngc-3077-an-ultra-deep-219-hour-collaboration-detailing-the-nuanced-interaction-remnants-and-galact...
- Tue Jan 17, 2023 10:39 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Unexpected Clouds Toward the Galaxy... (2023 Jan 17)
- Replies: 33
- Views: 13760
Re: APOD: Unexpected Clouds Toward the Galaxy... (2023 Jan 17)
Interesting stuff. Looking at the linked paper, an ongoing spectrographic study will help determine if this object is outside our galaxy. "A spectrum of the [O iii] emission arc would offer radial velocity information which could establish an association with M31 and its halo. A follow-up spect...