Search found 2955 matches
- Fri May 24, 2024 1:12 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: M78 from the Euclid Space Telescope (2024 May 24)
- Replies: 10
- Views: 757
Re: APOD: M78 from the Euclid Space Telescope (2024 May 24)
The brightest foreground stars show six straight diffaction spikes and also at least two arcs. Are the arcs similarly an artefact of the way the telescope's mirror is mounted? You beat me to asking about the arcs. Clearly it's an optical artifact, but what causes it and why is it only visible on so...
- Thu May 23, 2024 8:19 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Unraveling NGC 3169 (2024 May 23)
- Replies: 11
- Views: 401
Re: APOD: Unraveling NGC 3169 (2024 May 23)
So, I'm reading that tiny NGC 3165 is also part of this triple, and at about the same distance, yet it doesn't seem to be interacting with the other two at all, either currently or in the past. Why not? First, these interactions are tidal . That means they occur when extended bodies are close enoug...
- Thu May 23, 2024 8:18 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Unraveling NGC 3169 (2024 May 23)
- Replies: 11
- Views: 401
Re: APOD: Unraveling NGC 3169 (2024 May 23)
So, I'm reading that tiny NGC 3165 is also part of this triple, and at about the same distance, yet it doesn't seem to be interacting with the other two at all, either currently or in the past. Why not? Also, I note that NGC 3165 is classified as a spiral too, which would confirm that spirals reall...
- Thu May 23, 2024 6:43 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Unraveling NGC 3169 (2024 May 23)
- Replies: 11
- Views: 401
Re: APOD: Unraveling NGC 3169 (2024 May 23)
So, I'm reading that tiny NGC 3165 is also part of this triple, and at about the same distance, yet it doesn't seem to be interacting with the other two at all, either currently or in the past. Why not? Also, I note that NGC 3165 is classified as a spiral too, which would confirm that spirals really...
- Mon May 20, 2024 1:01 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Jupiter Diving (2024 May 19)
- Replies: 10
- Views: 398
Re: APOD: Jupiter Diving (2024 May 19)
Nice. I'll have to go read it myself. For the first time!Chris Peterson wrote: ↑Sun May 19, 2024 10:13 pm I just re-read Clarke's 1971 short story A Meeting with Medusa about a dirigible pilot who ventures down into the upper levels of Jupiter's atmosphere (and discovers life there). Kind of like the APOD, but in slow motion.
- Sun May 19, 2024 5:58 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Jupiter Diving (2024 May 19)
- Replies: 10
- Views: 398
Re: APOD: Jupiter Diving (2024 May 19)
Nice, but I want my gargantuan tentacled buoyant Jovian alien gas bag "jellyfish"!
- Sat May 18, 2024 12:58 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: North Celestial Aurora (2024 May 18)
- Replies: 1
- Views: 323
Re: APOD: North Celestial Aurora (2024 May 18)
I trust we are nearing the end of Aurora Week! How about we have a Galaxy Week next?
EDIT: looking back, I see we had a cluster featured last Tuesday (May 14), so it wasn't a pure Aurora Week after all.
EDIT: looking back, I see we had a cluster featured last Tuesday (May 14), so it wasn't a pure Aurora Week after all.
- Fri May 17, 2024 5:49 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Aurora Banks Peninsula (2024 May 17)
- Replies: 5
- Views: 475
Re: APOD: Aurora Banks Peninsula (2024 May 17)
I presume this is the location of the Southern Cross:
- Thu May 16, 2024 6:27 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Aurora Georgia (2024 May 16)
- Replies: 11
- Views: 499
Re: APOD: Aurora Georgia (2024 May 16)
That link to the Youtube video sure is impressive. url=https://www.youtube.com/watch?v=Jt_XvnVrDco But what caused that bright flash a 00:00:33 seconds into it, quickly followed by a seemingly remnant "thumbprint" on the image? A passing car headlight? georgia aurora video still.jpg The p...
- Thu May 16, 2024 6:00 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Aurora Georgia (2024 May 16)
- Replies: 11
- Views: 499
Re: APOD: Aurora Georgia (2024 May 16)
That link to the Youtube video sure is impressive. url=https://www.youtube.com/watch?v=Jt_XvnVrDco But what caused that bright flash a 00:00:33 seconds into it, quickly followed by a seemingly remnant "thumbprint" on the image? A passing car headlight? georgia aurora video still.jpg
- Thu May 16, 2024 5:54 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Aurora Georgia (2024 May 16)
- Replies: 11
- Views: 499
- Tue May 14, 2024 9:23 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: AR 3664 on a Setting Sun (2024 May 13)
- Replies: 17
- Views: 710
Re: APOD: AR 3664 on a Setting Sun (2024 May 13)
The apparent disk of the Sun rotates by about 180° between sunrise and sunset (with respect to the horizon). Consider that when you're watching the Sun rise in the east, its north pole is pointing to the left. At sunset, it is pointing to the right. So a camera that is oriented so that its lower ed...
- Tue May 14, 2024 9:04 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The 37 Cluster (2024 May 14)
- Replies: 24
- Views: 1211
Re: APOD: The 37 Cluster (2024 May 14)
I actually rounded it down. The Windows Calc app gives me 11,668,096.170609625164708884885897 ! Cool. So we know the age of the cluster to within a few attoseconds! Where is the "rolling on the floor laughing my a.. off" emoji? Ann Here you go: 🤣🤣🤣 , or perhaps this animated gif: https://...
- Tue May 14, 2024 8:56 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: All Sky Moon Shadow (2024 Apr 27)
- Replies: 20
- Views: 1461
Re: APOD: All Sky Moon Shadow (2024 Apr 27)
Sorry, but what moons post? Still not getting it. I must be getting too old...Astro_mark wrote: ↑Tue May 14, 2024 7:12 pm Indeed! I thought I was still commenting on the moons post that was one line before this one.
Of this image I love the natural colors of the sky and the orange glow of the horizon!
- Tue May 14, 2024 6:52 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The 37 Cluster (2024 May 14)
- Replies: 24
- Views: 1211
Re: APOD: The 37 Cluster (2024 May 14)
That's because you have a cheap calculator. Mine has more digits, so I know the age of this cluster to within a few milliseconds! I actually rounded it down. The Windows Calc app gives me 11,668,096.170609625164708884885897 ! Cool. So we know the age of the cluster to within a few attoseconds! I lo...
- Tue May 14, 2024 6:36 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The 37 Cluster (2024 May 14)
- Replies: 24
- Views: 1211
Re: APOD: The 37 Cluster (2024 May 14)
What about it? The link to the "webda" page mentioned (https://webda.physics.muni.cz/cgi-bin/ocl_page.cgi?dirname=ngc2169) shows a "Log age" of 7.067 and 10 the power of that is about 11,668,096.17 😊 That's because you have a cheap calculator. Mine has more digits, so I know the...
- Tue May 14, 2024 6:33 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The 37 Cluster (2024 May 14)
- Replies: 24
- Views: 1211
Re: APOD: The 37 Cluster (2024 May 14)
The link to the "webda" page mentioned (https://webda.physics.muni.cz/cgi-bin/o ... me=ngc2169) shows a "Log age" of 7.067 and 10 the power of that is about 11,668,096.17Chris Peterson wrote: ↑Tue May 14, 2024 6:10 pmWhat about it?Roy wrote: ↑Tue May 14, 2024 6:09 pmLog Age
EDIT: oops: Roy beat me to it!
- Tue May 14, 2024 5:47 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: AR 3664 on a Setting Sun (2024 May 13)
- Replies: 17
- Views: 710
Re: APOD: AR 3664 on a Setting Sun (2024 May 13)
Hopefully someone can clear up some sun confusions for me. Today's APOD shows AR-3664 towards the BOTTOM of the solar disk. That of May 11 showed this cluster to be towards the RIGHT. Does the apparent orientation of the sun shift from day to day? My understanding is that the storms move from left ...
- Mon May 13, 2024 8:37 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: AR 3664 on a Setting Sun (2024 May 13)
- Replies: 17
- Views: 710
Re: APOD: AR 3664 on a Setting Sun (2024 May 13)
Hi! I'd like to introduce myself, I'm Lee! I won't be contributing anything of value to these discussions. I just love to look at the pictures. As an example, the first thing I thought of when I saw this one was "ET phone home". So, there ya go! I do read the discussions and sometimes eve...
- Mon May 13, 2024 1:36 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: All Sky Moon Shadow (2024 Apr 27)
- Replies: 20
- Views: 1461
Re: APOD: All Sky Moon Shadow (2024 Apr 27)
In its simplicity, this image is both artistic and scientific. the colors of the Moon catch the eye. I would like to understand a little more what the magenta color of the central moon is due to. I will check Marcella's blog. Perhaps it is a Moon low on the horizon with this coloration that the aut...
- Sun May 12, 2024 4:58 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Red Aurora over Poland (2024 May 12)
- Replies: 13
- Views: 645
Re: APOD: Red Aurora over Poland (2024 May 12)
I wonder why after I clicked Show in YouTube I was presented with a view defaulted to 480 pixel height video and had to go through options to see 1080 pixel height original video Hmm, I get a 720p (1024x720) video resolution when I click on the link. I would think the default resolution is set by t...
- Sun May 12, 2024 3:52 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Red Aurora over Poland (2024 May 12)
- Replies: 13
- Views: 645
Re: APOD: Red Aurora over Poland (2024 May 12)
Amazing display on Friday night from Cornwall in the South-West of the UK. The pillars were bright rapidly changing, in subtle greens, purples and occasionally blue. Didn't know where to look at times, there were some bright transient features due South. Brightest display here for over 20 years I b...
- Sun May 12, 2024 3:47 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Red Aurora over Poland (2024 May 12)
- Replies: 13
- Views: 645
Re: APOD: Red Aurora over Poland (2024 May 12)
The result looks like so: https://www.youtube.com/watch?v=1MYJhsjX-C4 Thanks johnny, I had to strip a channel parameter off my url in order to get it to work. FYI, this URL also works properly in the [youtube][/youtube] tags: https://www.youtube.com/watch?v=1MYJhsjX-C4?si=zsBn6ckJw_SLulZa
- Sun May 12, 2024 1:23 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Red Aurora over Poland (2024 May 12)
- Replies: 13
- Views: 645
Re: APOD: Red Aurora over Poland (2024 May 12)
Amazing display on Friday night from Cornwall in the South-West of the UK. The pillars were bright rapidly changing, in subtle greens, purples and occasionally blue. Didn't know where to look at times, there were some bright transient features due South. Brightest display here for over 20 years I b...
- Sun May 12, 2024 1:13 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: AR 3664: Giant Sunspot Group (2024 May 11)
- Replies: 25
- Views: 1248
Re: APOD: AR 3664: Giant Sunspot Group (2024 May 11)
Is this image, its quality and the gesture to publish it, a huge joke? From time to time APOD editions pop into my view, last time I left some abrasive comments was for the photoshoped solar eclipse-moon-something. I literally shoot better (read: much better, link below to our forum) images during ...