by Ann » Sun Dec 18, 2022 7:39 am
VictorBorun wrote: ↑Sun Dec 18, 2022 5:36 am
Yet to my naked eye if I remember correctly
Antares felt red (in place of pale orange–yellow here)
Arcturus felt very pale yellow (in place of pale orange–yellow here)
Deneb felt white (in place of very pale blue here)
Vega felt very pale blue (in place of white here)
Well, I guess we can explain a red Antares as observer's hypercorrection of bleaching colours when a spec is bright and small.
But for the rest of discrepancies I see no reason
My experience tells me that the color stars look different due to differences in sky color, darkness, moisture etcetera.
I remember the first time ever that I spotted Antares, a southerly star that is hard to see in Sweden. One morning in April, when dawn was on its way, I saw a fantastically orange-red light to the south that just cleared the tree tops of the park across my street. I have never seen Antares look as red as that again. I guess that the dark but yet luminous blue sky created a contrast that enhanced Antares' yellow-orange hue and made it appear redder.
I can also remember seeing Arcturus very low in the sky during dusk. As I watched it through my binoculars, Arcturus shimmered and sparkled like Sirius, except that the colors it displayed were only red and green.
I will never forget the time I observed Arcturus through a telescope, and it looked absolutely lemon yellow.
I will never forget seeing Meissa, Lambda Orionis, through a telescope. Other stars were visible next to it, but Meissa just popped out, because it was so blue.
I think that the best way to judge the color of a star is to observe it again and again, to familiarize yourself with the star's "average" appearance.
Ann
[quote=VictorBorun post_id=327887 time=1671341785 user_id=145500]
Yet to my naked eye if I remember correctly
Antares felt red (in place of pale orange–yellow here)
Arcturus felt very pale yellow (in place of pale orange–yellow here)
Deneb felt white (in place of very pale blue here)
Vega felt very pale blue (in place of white here)
Well, I guess we can explain a red Antares as observer's hypercorrection of bleaching colours when a spec is bright and small.
But for the rest of discrepancies I see no reason
[/quote]
My experience tells me that the color stars look different due to differences in sky color, darkness, moisture etcetera.
I remember the first time ever that I spotted Antares, a southerly star that is hard to see in Sweden. One morning in April, when dawn was on its way, I saw a fantastically orange-red light to the south that just cleared the tree tops of the park across my street. I have never seen Antares look as red as that again. I guess that the dark but yet luminous blue sky created a contrast that enhanced Antares' yellow-orange hue and made it appear redder.
I can also remember seeing Arcturus very low in the sky during dusk. As I watched it through my binoculars, Arcturus shimmered and sparkled like Sirius, except that the colors it displayed were only red and green.
I will never forget the time I observed Arcturus through a telescope, and it looked absolutely lemon yellow.
I will never forget seeing Meissa, Lambda Orionis, through a telescope. Other stars were visible next to it, but Meissa just popped out, because it was so blue.
I think that the best way to judge the color of a star is to observe it again and again, to familiarize yourself with the star's "average" appearance.
Ann