Quote:
Originally Posted by skysurfer
I am talking about the star, not the nebula.
Using my binos or telescope Eta appears red to me like Antares or Betelgeuse ?
Is it an M type giant ?
The largest online astronomy textbook says the spectral type is Variable / O and a surface temperature of 9300 K or hotter.
How can it be red ? |
Were are you observing it from?
I see you're in Bellengin NSW
Depending what time you observed it ,you could be observing it low down
so the colour could be of a reddish ewe.
It comes across to me as a bright white to yellow.