
S Coronae Borealis at record maximum
- flt158
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S Coronae Borealis at record maximum was created by flt158
Over on www.cloudynights.com a special announcement has been made.
S Coronae Borealis is quite a bit brighter than its normal magnitude of +5.8.
But right now it's +5.4 - and it may become even brighter.
Of course once we get a clear night even low powered binoculars will see it.
The star's spectral class normally varies between M6 to M8.
But one observer reckons it is now M5.
S Crb has been known to fade to +14.1 - fainter than Pluto!
Its period is 360 days.
If we have clear skies on Monday I will seek it out.
It ought to have an orange or red colour.
Clear skies from Aubrey.
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- Fermidox
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Replied by Fermidox on topic S Coronae Borealis at record maximum
Finbarr.
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- flt158
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Replied by flt158 on topic S Coronae Borealis at record maximum
What an extraordinary small constellation Corona Borealis is!
Regarding its size it's the 73rd largest constellation in the entire sky - seriously small.
And yet it has plenty of interesting stars within its boundaries.
I have observed the only 2 carbon stars in it: R and V Crb.
I've yet to observe S or T Crb.
And there are plenty more M-class stars too.
Right now we have so much cloud according to Met Eireann satellite image.
But over in Limerick you're having plenty of sunshine, Finbarr.
Maybe you will observe S Crb before any of us on the east coast.
on www.aavso.org 2 observers are estimating its magnitude as +5.5,
Clear skies from Aubrey.
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- Keith g
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Replied by Keith g on topic S Coronae Borealis at record maximum
Keith.
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Finbarr.
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- Until_then-Goodnight!
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Replied by Until_then-Goodnight! on topic S Coronae Borealis at record maximum
Clear skies,
Darren.
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Replied by Fermidox on topic S Coronae Borealis at record maximum
Clear skies,
Finbarr.
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- flt158
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Replied by flt158 on topic S Coronae Borealis at record maximum
+5.6 sounds very good.
We are being promised clear skies on Wednesday night.
(I'm at a church party on Tuesday night).
It's a guarantee that I will observe S Crb.
Clear skies for this one, Aubrey.
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- flt158
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Replied by flt158 on topic S Coronae Borealis at record maximum
Fermidox post=111326 userid=1800I observed S CrB last night and found it notably fainter than eta CrB. My estimate is mag 5.6
Clear skies,
Finbarr.
Hello again Finbarr.
I see eta Crb has a magnitude 5.6.
It's an extremely tight binary - too tight for my apo refractor.
Best regards from Aubrey.
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- flt158
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Replied by flt158 on topic S Coronae Borealis at record maximum
Here it is again.
Hello again, Finbarr.
I see eta Crb has a magnitude of 5.6.
It's an extremely tight binary - too tight for my apo refractor.
Best regards from Aubrey.
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Replied by Fermidox on topic S Coronae Borealis at record maximum
www.aavso.org/vsx/index.php?view=detail.top&oid=45678
Clear skies,
Finbarr.
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- flt158
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Replied by flt158 on topic S Coronae Borealis at record maximum
It all seems very confusing.
Burnham states that eta Crb A is 5 and a half. B is 6.
Sissy Haas gives A as 5.6. B is 6.0.
Guide 9.1 DVD varies from 5.0 to 5.6. B is 6.
Simbad gives A as 5.6.
Wikipedia gives A as 5.0.
Who are we to believe?
If the experts cannot agree, then how can we suss it out?
Madness!
And we trying to estimate S Crb.
Best regards from Aubrey.
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- flt158
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Replied by flt158 on topic S Coronae Borealis at record maximum
Its magnitude is +5.5.
Get that one right and eta Crb might get sorted.
Chi Bootis' magnitude is 5.3.
Clear skies from Aubrey.
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Replied by Fermidox on topic S Coronae Borealis at record maximum
Finbarr.
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- R Newman
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Replied by R Newman on topic S Coronae Borealis at record maximum
Discovered by John Birmingham of Millbrook Observatory, Co. Galway in 1866.. Will be giving a talk about Birmingham, Tcrb and his other observations at Millbrook in September.
Ronan Newman
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Replied by Fermidox on topic S Coronae Borealis at record maximum
Finbarr.
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- R Newman
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Replied by R Newman on topic S Coronae Borealis at record maximum
Only took 150 years for the portrait to appear again....
Thanks for your help Finbar about JJ Fisher from Limerick will be mentioning him at my talk in Tullamore in September
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