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General Astronomy >> General Observing and Astronomy

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SeptemberEquinox
sage
*****

Reged: 01/29/12

Betelguese looks really red tonight. new
      #5702691 - 02/26/13 11:28 PM

As i was leaving from work, i looked up and saw a bright red star Betelgeuse. Normally i see it as bright orange, but it looks supa red. Are my eyes so tired, they are seeing stuff or is something going on? I am no where near my telescope, so I won't be able to take a look at Betelgeuse, tonight.

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leviathan
sage


Reged: 11/29/11

Loc: Azerbaijan
Re: Betelguese looks really red tonight. new [Re: SeptemberEquinox]
      #5702789 - 02/27/13 12:54 AM

Supernova finally ??

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MikeBOKC
Post Laureate
*****

Reged: 05/10/10

Loc: Oklahoma City, OK
Re: Betelguese looks really red tonight. new [Re: SeptemberEquinox]
      #5703031 - 02/27/13 08:18 AM

I sometimes find the colors of specific stars a bit stronger on nights with good transparency. Betelguese can range from red to orange depending on elevation and what I am looking through to see it.

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JayinUT
I'm not Sleepy
*****

Reged: 09/19/08

Loc: Utah
Re: Betelguese looks really red tonight. new [Re: leviathan]
      #5703092 - 02/27/13 09:09 AM

When the light from the SN that will come from Betelgeuse arrives we will know it. Here is a view from Celestia (fee NASA program) that shows what it may look like.



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SeptemberEquinox
sage
*****

Reged: 01/29/12

Re: Betelguese looks really red tonight. new [Re: JayinUT]
      #5703140 - 02/27/13 09:50 AM

I got really excited lol >.<

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Jerry-rigged
sage


Reged: 01/30/12

Loc: Coastal Texas.
Re: Betelguese looks really red tonight. new [Re: SeptemberEquinox]
      #5703181 - 02/27/13 10:19 AM

I was looking at it Monday, and was thinking the same thing. Looks more red than I remember. But then, I am still a noob, and don't spend a lot of time (gasp!) looking at stars.

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csrlice12
Postmaster
*****

Reged: 05/22/12

Loc: Denver, CO
Re: Betelguese looks really red tonight. new [Re: Jerry-rigged]
      #5703209 - 02/27/13 10:31 AM

A selection of other possibilities:

OK class, Remember to remove your filters before packing up your equipment!

Or, with those bloodshot eyes, everything must look red....

Or, if it's a chrismas scope, you can remove the red wrapping paper from the OTA now...

Or, how do you not know it wasn't an airplane trying to shine a laser down your scope??

Or, We're fixing to be attaked by a giant white space pie....

Edited by csrlice12 (02/27/13 10:35 AM)


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nirvanix
Carpal Tunnel


Reged: 06/07/07

Loc: Saskatoon, SK
Re: Betelguese looks really red tonight. new [Re: csrlice12]
      #5703250 - 02/27/13 10:52 AM

High transparency really lets the stars show their true colors. If you look at star clusters on nights of excellent transparency you'll be surprised to find some colored stars in there where normally they are whitish.

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Tony Flanders
Postmaster
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Reged: 05/18/06

Loc: Cambridge, MA, USA
Re: Betelguese looks really red tonight. new [Re: SeptemberEquinox]
      #5703276 - 02/27/13 11:04 AM

For what it's worth, like most if not all red supergiants, Betelgeuse is a long-period variable. And its color varies together with its magnitude.

However, I'm betting on atmospheric conditions.


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GlennLeDrew
Postmaster
*****

Reged: 06/18/08

Loc: Ottawa, Ontario, Canada
Re: Betelguese looks really red tonight. new [Re: Tony Flanders]
      #5703320 - 02/27/13 11:31 AM

The color change as Betelgeuse varies (over a period of months to years, mainly) is probably too small to detect visually. I find that for such reddish stars, atmospheric conditions have to be quite bad, or the star rather low, in order to effect a notable further reddening. I can't ever recall conditions which made a star bluer; reddening is virtually the only color change one might experience, except, I suppose under the right type of volcanic ash/particulates that I've read about.

For me, far more effective in the altering of perceived color purity is whether I'm dark adapted or not. As dark adaption proceeds, star colors become paler.

Additionally, when I see the redder stars in deep twilight, where the blue of the sky is still perceptible, they seem to be more intensely hued, presumably due to the effect of the complementary colors, blue and orange.


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ThreeD
Pooh-Bah


Reged: 12/23/08

Loc: Sacramento suburbs
Re: Betelguese looks really red tonight. new [Re: SeptemberEquinox]
      #5703509 - 02/27/13 01:26 PM

Perhaps you are wearing rose colored glasses? Have things generally been looking up these days?

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uniondrone
Carpal Tunnel
*****

Reged: 12/05/09

Loc: Streetlight Archipelago
Re: Betelguese looks really red tonight. new [Re: JayinUT]
      #5703543 - 02/27/13 01:44 PM

Hi Jay,

That's a nice image! It's been a while since I've fooled around with Celestia. Did you do this by setting the time forward, or by using some other function?


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Dennis_S253
Pooh-Bah


Reged: 11/22/11

Loc: West Central Florida
Re: Betelguese looks really red tonight. [Re: uniondrone]
      #5704220 - 02/27/13 08:36 PM

I thought I read it could happen in our life time? Maybe they meant our grand kids life time. I don't think anyone knows. It could happen tonight.

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leviathan
sage


Reged: 11/29/11

Loc: Azerbaijan
Re: Betelguese looks really red tonight. new [Re: Dennis_S253]
      #5704657 - 02/28/13 01:39 AM

Who knows, maybe it has exploded several centuries ago and light from it hasn't yet reached us.

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GeneT
Ely Kid
*****

Reged: 11/07/08

Loc: South Texas
Re: Betelguese looks really red tonight. new [Re: SeptemberEquinox]
      #5705184 - 02/28/13 11:57 AM

Maybe particulants in the atmosphere?

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bryguy27007
super member
*****

Reged: 03/09/09

Loc: Minnesota
Re: Betelguese looks really red tonight. new [Re: ThreeD]
      #5705246 - 02/28/13 12:23 PM

Quote:

Perhaps you are wearing rose colored glasses? Have things generally been looking up these days?





Good one.


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Footbag
Postmaster
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Reged: 04/13/09

Loc: Scranton, PA
Re: Betelguese looks really red tonight. new [Re: bryguy27007]
      #5710184 - 03/03/13 09:23 AM

I'm reluctant to belive the supernova is beginning, but I did walk outside the other night and say the same exact thing.

It really did look redder the usual.


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chrisg
sage
*****

Reged: 02/15/09

Re: Betelguese looks really red tonight. [Re: Footbag]
      #5710189 - 03/03/13 09:28 AM

Is there an astronomical organization that would track this sort of thing? I also noticed that Betelgeuse looks more red than I recall.

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MikeBOKC
Post Laureate
*****

Reged: 05/10/10

Loc: Oklahoma City, OK
Re: Betelguese looks really red tonight. [Re: chrisg]
      #5711048 - 03/03/13 05:24 PM

Yes IAU maintains a central reporting station for all supernovae, comets, etc. It is the go to source and the place both amateurs and professionals report new discoveries.

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GlennLeDrew
Postmaster
*****

Reged: 06/18/08

Loc: Ottawa, Ontario, Canada
Re: Betelguese looks really red tonight. [Re: MikeBOKC]
      #5711167 - 03/03/13 06:26 PM

Many amateurs can easily measure the B-V color index, which can be compared with older measures.

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