Quote:
Originally Posted by Andrew C
Don't forget to make a note to look at EsB365 near beta crux though when the opportunity arises, for those of you who haven't seen it - it is without doubt the reddest in the sky (b-v 5.8) - not just orange red but ruby red. The reason it doesn't get much publicity is that it is not visible from the northern hemisphere.
Cheers,
Andrew
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Yep Andrew, Ruby Crucis (DY Crucis, EsB365) is a ripper and has been given heaps of publicity in here
http://www.iceinspace.com.au/forum/s...ad.php?t=27083
http://www.iceinspace.com.au/forum/s...ht=ruby+crucis
http://www.iceinspace.com.au/forum/s...ht=ruby+crucis
http://www.iceinspace.com.au/forum/s...ht=ruby+crucis
http://www.iceinspace.com.au/forum/s...t=carbon+stars
etc etc
but for Blue stars, I reckon Achernar ( Alpha Eridani) looks fairly Blue through a scope.
I also notice that blue stars tend to actually look bluer at very high magnification.
Try it. Look at some proposed blue targets then up the magnification.
Probably because the light is being spread out more thus diffusing the brightness.