The tag has no usage guidance.

learn more… | top users | synonyms

1
vote
2answers
103 views

Is solar wind a source of water?

Solar wind may contain some hydrogen and oxygen atoms which is the composition of water, some of them may move to the poles of earth, my question is, is solar wind also a source of water in earth?
0
votes
1answer
37 views

Pinhole Projector: Can I use a specific solar optical eye piece to focus the Transit of Mercury?

The title pretty much explains this one. Can I use a specific solar optical eye piece, or other optical device, in conjunction with the pinhole projector method to focus the Transit of Mercury? ...
3
votes
0answers
44 views

Linear limb darkening coefficient, u

I was wondering if anyone knew of any resources to understand the linear limb darkening coefficient, $u$. That is to say, how the $\theta$-dependent coefficient $u$ (or sometimes $b_{\nu}$) varies ...
1
vote
0answers
19 views

Wavelength-dependent limb darkening of the Sun - need approximations or sample images

I need an approximate analytical expression for visible light limb darkening of the sun viewed at large distance, either as a function of wavelength, or even just a few wavelengths from red to blue. ...