|
Posted by Ken S. Tucker on February 21, 2008, 3:17 pm
Please log in for more thread options
On Feb 21, 8:18 am, david.willi...@bayman.org (David Williams) wrote:
> -> I cot that ;-)...speakin of Luny's, we lucked out tonite
> -> and got a clear view of the eclipse, very nice, I think
> -> I noticed some penumbra.
> -> Ken
>
> I looked at about 9:30 (E.T.) The right-hand edge of the moon was still
> in bright sunlight. The rest was still visible, but a dark reddish
> colour. The colour was darkest toward the left, i.e. away from the
> sunlit area. Of course, the red light was reaching the moon after being
> refracted through Earth's atmosphere.
>
> What always surprises me is how sharp the apparent division between the
> sunlit and shadowed areas is. Seen from the part of the moon that is
> just in the sunlit area, the sun must be almost totally covered by the
> Earth, and yet the light is still bright enough to make that part of
> the moon look bright. There must be a penumbral area, but it isn't
> obvious. I did look earlier in the evening, when the almost the whole
> moon should have been in penumbra, but I didn't see any graduation of
> illumination across it. Mind you, the temperature here was about -15C,
> so I wasn't in a mood to do a prolonged study!
> dow
We are fortunate to have large windows facing east
unobstructed, so I/we could sit in the office, do some
binoc's. I wish now I had made better notes/diagrams
in relation to the penumbra. It's from memory I noted
"oh neat" it was noticeable over 1/2 the diameter of the
moon and I rechecked to notice the shade of gray taper
off from the umbra, but only faintly.
"-15C", that's pretty cold for TO, ah butt in a week you'll
be sunning those cute buns of yours ;-).
Regards
Ken
| 
XML Sitemap