more images for Betelgeuse's Great Dimming

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more images for Betelgeuse's Great Dimming

#1

Post by notFritzArgelander »


Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker IV, Vixen Porta II, Celestron CG5
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Re: more images for Betelgeuse's Great Dimming

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Post by Lady Fraktor »


I thought there would be a rather simple explanation for the sudden dimming that did not require it exploding :)
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Re: more images for Betelgeuse's Great Dimming

#3

Post by GCoyote »


"We have directly witnessed the formation of so-called stardust,"

Incredible.
Any metaphor will tear if stretched over too much reality.
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Re: more images for Betelgeuse's Great Dimming

#4

Post by notFritzArgelander »


Lady Fraktor wrote: Wed Jun 16, 2021 7:18 pm I thought there would be a rather simple explanation for the sudden dimming that did not require it exploding :)
Exactly. The timescale of the change was much too long for a supernova to be imminent. The outer layers of a giant star don't know that the core has run out of fuel and collapsed until it actually happens. The process of core collapse is on the order of seconds. The time scale for the envelope to respond is on the order of many days. Remember it takes about 30,000 years for a photon to random walk out of the Sun. So a sudden loss of nuclear energy isn't felt for some time.
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker IV, Vixen Porta II, Celestron CG5
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Re: more images for Betelgeuse's Great Dimming

#5

Post by notFritzArgelander »


notFritzArgelander wrote: Wed Jun 16, 2021 8:03 pm
Lady Fraktor wrote: Wed Jun 16, 2021 7:18 pm I thought there would be a rather simple explanation for the sudden dimming that did not require it exploding :)
Exactly. The timescale of the change was much too long for a supernova to be imminent. The outer layers of a giant star don't know that the core has run out of fuel and collapsed until it actually happens. The process of core collapse is on the order of seconds. The time scale for the envelope to respond is on the order of many days. Remember it takes about 30,000 years for a photon to random walk out of the Sun. So a sudden loss of nuclear energy isn't felt for some time.
PS Any first year graduate student in astrophysics should know this so the hype about a supernova was a PR stunt I'm afraid.
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker IV, Vixen Porta II, Celestron CG5
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Re: more images for Betelgeuse's Great Dimming

#6

Post by Lady Fraktor »


In this day of clickbait headlines I tended to ignore all of the sensational ones predicting imminent doom.
See Far Sticks: Antares Elita 103/1575, AOM FLT 105/1000, Bresser BV 127/1200, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, AXJ, AXD
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Re: more images for Betelgeuse's Great Dimming

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Post by notFritzArgelander »


Lady Fraktor wrote: Thu Jun 17, 2021 3:45 am In this day of clickbait headlines I tended to ignore all of the sensational ones predicting imminent doom.
Yep. They're all cynical scams.
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker IV, Vixen Porta II, Celestron CG5
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Re: more images for Betelgeuse's Great Dimming

#8

Post by turboscrew »


notFritzArgelander wrote: Wed Jun 16, 2021 10:51 pm
notFritzArgelander wrote: Wed Jun 16, 2021 8:03 pm
Lady Fraktor wrote: Wed Jun 16, 2021 7:18 pm I thought there would be a rather simple explanation for the sudden dimming that did not require it exploding :)
Exactly. The timescale of the change was much too long for a supernova to be imminent. The outer layers of a giant star don't know that the core has run out of fuel and collapsed until it actually happens. The process of core collapse is on the order of seconds. The time scale for the envelope to respond is on the order of many days. Remember it takes about 30,000 years for a photon to random walk out of the Sun. So a sudden loss of nuclear energy isn't felt for some time.
PS Any first year graduate student in astrophysics should know this so the hype about a supernova was a PR stunt I'm afraid.
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Re: more images for Betelgeuse's Great Dimming

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Post by notFritzArgelander »


turboscrew wrote: Thu Jun 17, 2021 8:47 pm
notFritzArgelander wrote: Wed Jun 16, 2021 10:51 pm
notFritzArgelander wrote: Wed Jun 16, 2021 8:03 pm

Exactly. The timescale of the change was much too long for a supernova to be imminent. The outer layers of a giant star don't know that the core has run out of fuel and collapsed until it actually happens. The process of core collapse is on the order of seconds. The time scale for the envelope to respond is on the order of many days. Remember it takes about 30,000 years for a photon to random walk out of the Sun. So a sudden loss of nuclear energy isn't felt for some time.
PS Any first year graduate student in astrophysics should know this so the hype about a supernova was a PR stunt I'm afraid.
I haven't studied astrophysics and even I was skeptic.
Good for you! My snarky remark about "any first year graduate student" was directed at PhD folks hyping the supernova aspect when they should durn well know better. I hate it when folks try to hype science like a dishonest salesperson. :flame: :P :popcorn:
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker IV, Vixen Porta II, Celestron CG5
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Re: more images for Betelgeuse's Great Dimming

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Post by Greenman »


GCoyote wrote: Wed Jun 16, 2021 7:43 pm "We have directly witnessed the formation of so-called stardust,"

Incredible.
Even more incredible to think therein is the stuff we are made of. :? :shock:
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Re: more images for Betelgeuse's Great Dimming

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Post by turboscrew »


Greenman wrote: Thu Jun 17, 2021 9:24 pm
GCoyote wrote: Wed Jun 16, 2021 7:43 pm "We have directly witnessed the formation of so-called stardust,"

Incredible.
Even more incredible to think therein is the stuff we are made of. :? :shock:
I'm even more astonished, that we mine stuff that can basically only form in supernovas.
- Juha

Senior Embedded SW Designer
Telescope: OrionOptics XV12, Mount: CEM120, Tri-pier 360 and alternative dobson mount.
Grab 'n go: Omegon AC 102/660 on AZ-3 mount
Eyepieces: 26 mm Omegon SWAN 70°, 15 mm TV Plössl, 12.5 mm Baader Morpheus, 10 mm TV Delos, 6 mm Baader Classic Ortho, 5 mm TV DeLite, 4 mm and 3 mm TV Radians
Cameras: ZWO ASI 294MM Pro, Omegon veLOX 178C
OAG: TS-Optics TSOAG09, ZWO EFW 7 x 36 mm, ZWO filter sets: LRGB and Ha/OIII/SII
Explore Scientific HR 2" coma corrector, Meade x3 1.25" Barlow, TV PowerMate 4x 2"
Some filters (#80A, ND-96, ND-09, Astronomik UHC)
Laptop: Acer Enduro Urban N3 semi-rugged, Windows 11
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Re: more images for Betelgeuse's Great Dimming

#12

Post by helicon »


Gold, silver, platinum all resulting from supernovas...
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Re: more images for Betelgeuse's Great Dimming

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Post by notFritzArgelander »


helicon wrote: Fri Jun 18, 2021 1:11 am Gold, silver, platinum all resulting from supernovas...
AND neutron star mergers.... :)
Scopes: Refs: Orion ST80, SV 80EDA f7, TS 102ED f11 Newts: AWB 130mm, f5, Z12 f5; Cats: VMC110L, Intes MK66,VMC200L f9.75 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker IV, Vixen Porta II, Celestron CG5
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