Betelguese getting some attention for dimming
Discussion
Apparently doing what it normally does and dimming, noticeably at the moment according to some with the Mrk 1. I understand the window to see it go super nova is in the region of 100,000 years give or take a year or two.
One can hope I get to see it in my lifetime. But it is known as a variable star but with the recent weeks of cloud, hardly a clear view of it myself. Dipped lower in the late 70's to mid 80's. Chuck in the star name and pick the elements you want.
https://www.aavso.org/LCGv2/
ALMA took a picture of it. Nice bump.
https://www.eso.org/public/unitedkingdom/images/po...
Size compared to our local star.
https://www.eso.org/public/unitedkingdom/images/po...
A tad up from Orions belt btw.
One can hope I get to see it in my lifetime. But it is known as a variable star but with the recent weeks of cloud, hardly a clear view of it myself. Dipped lower in the late 70's to mid 80's. Chuck in the star name and pick the elements you want.
https://www.aavso.org/LCGv2/
ALMA took a picture of it. Nice bump.
https://www.eso.org/public/unitedkingdom/images/po...
Size compared to our local star.
https://www.eso.org/public/unitedkingdom/images/po...
A tad up from Orions belt btw.
Hoofy said:
On my list of to do. More of these courses that is, might have a cack at this one. Keep finding myself hitting other things to do when I think I have spare time. Missed this one in my in tray (signed up to future learn emails and never read them).Let you know when I finish the course......
My limited understanding and I expect to be corrected. From what I have read, one expectation is it could be the brightest object in the sky (apart from the Sun) for months. And possibly visible in the day if it is above your horizon. But nothing dangerous as we are too far away and magnetic field.
I understand that some types of stars are very dangerous, Wolf Rayet is one type and there was a worry over one that seemed to be aimed at us but we are now deemed safe from that one (game ray burst).
My limited understanding and I expect to be corrected. From what I have read, one expectation is it could be the brightest object in the sky (apart from the Sun) for months. And possibly visible in the day if it is above your horizon. But nothing dangerous as we are too far away and magnetic field.
I understand that some types of stars are very dangerous, Wolf Rayet is one type and there was a worry over one that seemed to be aimed at us but we are now deemed safe from that one (game ray burst).
What I can gather with certain stars, when they go, the gamma ray burst beams out from the poles. WR104 was considered a risk to life on Earth (??) before they reviewed the info. it is over 7,000 light years away. We are a few degrees it seems from looking right down the bottle after some research done by Australian astronomer some 10 years ago.
Really should be getting some more courses in now I have the time.
Really should be getting some more courses in now I have the time.
Speaking of which, I came across this the other day when mooching through a few searches.
https://nusoft.fnal.gov/nova/public/
Above me at the moment but getting a better grasp of it.
https://nusoft.fnal.gov/nova/public/
Above me at the moment but getting a better grasp of it.
Started cloudless yesterday, then a few fluffy things came in, patchy on my sky last night and the first near clear for ages.
Reading the plot on the aavso.org some are showing 1.5+ magnitude change but the chart is not that simple. There is a "mean" function on it to better see what people are seeing. You can put a date range in back to 1905.
Computer is locked in some sort of issue with a backup at at the moment and turning it very slow and locking up, have to look at that aavso.org later.
OU course starts next week. I will be a world famous expert then. (Thanks Hoofy).
Reading the plot on the aavso.org some are showing 1.5+ magnitude change but the chart is not that simple. There is a "mean" function on it to better see what people are seeing. You can put a date range in back to 1905.
Computer is locked in some sort of issue with a backup at at the moment and turning it very slow and locking up, have to look at that aavso.org later.
OU course starts next week. I will be a world famous expert then. (Thanks Hoofy).
Yep, FOC. I have done a few on the solar system, planets and stuff over the years. Thought I would have more time but keeping finding things to do. Time I made time.
Apple also lists a good few free bits on its web app. Or at least it did before it messed things up. There were links to all sorts of free short courses run by universities world wide, try to find it again.
Apple also lists a good few free bits on its web app. Or at least it did before it messed things up. There were links to all sorts of free short courses run by universities world wide, try to find it again.
Hoofy said:
Eric Mc said:
Hoofy said:
Is it a little on the red side or is it my eyesight going off?
It's a red giant so always appears red.
I never noticed it before.
ISS passing through a bit of sky, slightly enhanced. The blur on the stars are probably atmosphere and lens aberration, this was not from a scope. Blues and reds should be obvious but this is a small file from a larger one.
Just nosing at the observation data in the link from my first post an it is still dimming. Past the mid 80's low.
https://www.aavso.org/LCGv2/
Law of sod says it will pop back up I suppose. I expect the attention it is getting may be skewing the results.
https://www.aavso.org/LCGv2/
Law of sod says it will pop back up I suppose. I expect the attention it is getting may be skewing the results.
Halmyre said:
Eh? Not enough photons to go round? 
Reply went awol. If it doubles up, I am in a time loop. Will need saving....I am looking at the reports, there are quite a few different methods of capture including the Mk1. As more eyes are turned to this there are more results, I don't know how accurate the more results are. It is something on my roundtoit list to better understand but certainly I can see where you are on the Earth can affect the result, I don't understand how they factor in their uncertainty error yet. Back to my roundtoit.
Hoofy said:
Zirconia said:
I say it the way you must say it three times.
Though Ford may have something to say on it.
Oh. It's the "gu" bit that I wasn't sure about.Though Ford may have something to say on it.
When you hear the peeps on Sky at Night etc. Betle then guse or something.
Scabutz said:
I cant believe we are talking about a star on the shoulder of Orion and no one has mentioned attack ships on fire yet.
Seriously thought I saw this news on Twitter this morning. I also got excited like someone above until i saw it might be 100,000 years away, also it may have already happened - blows my mind to think I could have happened back when we were fighting the French at Agincourt but the light hasn't reached us yet. I went out to have a look earlier. I always look for Orion on a clear night, must be one of the most recognisable constellations there is. Does seem to me that it looks dimmer, but perhaps that is just confirmation bias.
It is a young star, and a large star, going one what they know (the ubiquitous they and not from my fag pack calculations), time frame to pop is 100,000 years. That is anytime now and a short space of time as far as the universe is concerned. I have one bit of software saying 429ly and another saying 497ly distant (there should be an error in there +/- stuff). But that is probably due to the catalogue being used. Other sources say 600 or plus or minus.Seriously thought I saw this news on Twitter this morning. I also got excited like someone above until i saw it might be 100,000 years away, also it may have already happened - blows my mind to think I could have happened back when we were fighting the French at Agincourt but the light hasn't reached us yet. I went out to have a look earlier. I always look for Orion on a clear night, must be one of the most recognisable constellations there is. Does seem to me that it looks dimmer, but perhaps that is just confirmation bias.
Going to guess the peeps in the know, know a bit about how the star keeps it shape, mass and how much it burns. Lots to go on from the spectra and other bits. From that they have done a fag packet calculation on how long the star can keep fission going before the fuel runs out and gravity does its stuff. It is a young fast burning star, ours is 4.5 billion years old or so, Betelgeuse is 8 million years old give or take.
https://www.universetoday.com/144465/waiting-for-b...
Probably got stuff wrong. Distance measurement is interesting.
But anything we see in the night sky is in the past, Sun is 8 minutes. Your TV from a satellite is delayed cos light speed, as is your TV from the US or Japan. Not a lot but watch a picture pre and post and the delay is obvious for a satellite feed (26,000 miles or so there then the same back), less obvious on a few thousand miles on fibre. Take that out further and obviously c shows its limits.
Scabutz said:
So what's happening. Is it going supernova? Has Bruce Willis landed on it and is going to blow it up?
Ride home the other night sky was clear and I stopped for a look. It was very dim.
One theory is it is blasting off some mass. It is energetic.Ride home the other night sky was clear and I stopped for a look. It was very dim.
But still dimming it would seem.
Frim here https://www.aavso.org/LCGv2/
Gameface said:
Jack Mansfield said:
It would be incredible to see, hoping I get to experience it in my life time!
It will happen before you fix the logging out issue...Wow. ESO Has an image.
From this instrument??
https://eso.org/sci/facilities/paranal/instruments...
Anyhoo, IR image of the star. Note the notes regarding the small orange dot for a scale. https://www.eso.org/public/images/eso2003d/
Credit:
ESO/P. Kervella/M. Montargès et al., Acknowledgement: Eric Pantin
Some VLT goodness, this really is a stunning bit of kit. (kits? more than one mirror).
https://www.eso.org/public/news/eso2003/
From this instrument??
https://eso.org/sci/facilities/paranal/instruments...
Anyhoo, IR image of the star. Note the notes regarding the small orange dot for a scale. https://www.eso.org/public/images/eso2003d/
Credit:
ESO/P. Kervella/M. Montargès et al., Acknowledgement: Eric Pantin
Some VLT goodness, this really is a stunning bit of kit. (kits? more than one mirror).
https://www.eso.org/public/news/eso2003/
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