The last several days I have noticed a bright star in the eastern morning sky. This morning i got my field binoculars to take a closer look and this star has a cresent shape. Assuming its in our solar system it must be one of the planets? Does anyone know and are we on a closer orbit than normal?
Thanks
New moon?
Re: New moon?
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk. — Garrison Keillor
alive to the gentle breeze of communication, and please stop being such a jerk. — Garrison Keillor
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Céline Richard
- Science Officer
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Re: New moon?
Hello,
Actually, i don't understand why there is an enormous white crescent in the blue sky of this picture...
Is it Venus? If the enormous crescent is Venus, thus how could Venus be so big in our sky, compared to the moon, while Venus is so far away from us, compared to our satellite? Why? Is it an optical illusion?
Or if the enormous crescent represents the moon, so the little crescent is Venus. In this case, why the moon would be so big, in our sky?
If someone can answer me, thank you a lot
Have a very nice day!
Céline
Actually, i don't understand why there is an enormous white crescent in the blue sky of this picture...
Is it Venus? If the enormous crescent is Venus, thus how could Venus be so big in our sky, compared to the moon, while Venus is so far away from us, compared to our satellite? Why? Is it an optical illusion?
Or if the enormous crescent represents the moon, so the little crescent is Venus. In this case, why the moon would be so big, in our sky?
If someone can answer me, thank you a lot
Have a very nice day!
Céline
Re: New moon?
Celine: Those pictures were obviously taken with some sort of telescope or telephoto lens. The Moon (large crescent) is about 1º in angular size which means Venus (the little one) is ~1/20º. That's not big by any stretch of the imagination.
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Chris Peterson
- Abominable Snowman
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Re: New moon?
The Moon's angular diameter is 1/2°, or 30 arcminutes. Venus only shows a fine crescent at inferior conjunction, when its angular diameter is about 1 arcminute. So images like this should show about a 30-to-1 difference in the apparent diameters- regardless of whether they look physically large in the image or not.VoijaRisa wrote:Celine: Those pictures were obviously taken with some sort of telescope or telephoto lens. The Moon (large crescent) is about 1º in angular size which means Venus (the little one) is ~1/20º. That's not big by any stretch of the imagination.
Chris
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Chris L Peterson
Cloudbait Observatory
https://www.cloudbait.com
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Chris L Peterson
Cloudbait Observatory
https://www.cloudbait.com
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Céline Richard
- Science Officer
- Posts: 204
- Joined: Wed Nov 10, 2010 11:10 am
- Location: France
Re: New moon?
Hi
Thank you a lot for your explanations I even feel a little ridiculous now... The Moon is closer, so it appears bigger (=the large crescent), while the angular diameter of Venus is much more little (about a 30 to 1 difference, yes!!).
Thank you, have a very good day,
Céline
Thank you a lot for your explanations
I even feel a little ridiculous now... The Moon is closer, so it appears bigger (=the large crescent), while the angular diameter of Venus is much more little (about a 30 to 1 difference, yes!!). Thank you, have a very good day,
Céline
"The cure for all the sickness and mistakes, for all the concerns and the sorrow and the crimes of the humanity, lies in the word "Love". It is the divine vitality which from everywhere makes and restores the life". Lydia Maria Child