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Space Forum / Astronomy / July 2008Jupiter as a Clock
Jupiter hanging on the southern horizion all night as it does now provides a pretty good clock. If it is over the electric poles to the east, the night is young. If it is over the poles to the west, dawn is about to break. The Sun provides a way to tell time in the day, but the Moon moves around too much to be a good clock. Jupiter is excellent. Double-A If you understood the phases better, DA, you could use the Moon just as well. Everything in the sky is a clock. Saul Levy >Jupiter hanging on the southern horizion all night as it does now >provides a pretty good clock. If it is over the electric poles to the [quoted text clipped - 4 lines] > >Double-A > If you understood the phases better, DA, you could use the Moon just > as well. > > Everything in the sky is a clock. > > Saul Levy True, but crescent moons either set early in the evening, or else donl't rise until nearly dawn. Jupiiter is always up there all night long. Double-A > >Jupiter hanging on the southern horizion all night as it does now > >provides a pretty good clock. If it is over the electric poles to the [quoted text clipped - 6 lines] > > - Show quoted text - > > Everything in the sky is a clock. What about Polaris? It holds for Polaris too, oldfart! lmao! Since Polaris is not exactly at the pole, it can be used to deterimne local time. Where is it now in it's arc around the pole? Look that up in a table for that purpose and you have the local time. Some ephemeris books contain such tables. Saul Levy >> > Everything in the sky is a clock. >> >What about Polaris? > It holds for Polaris too, oldfart! lmao! > [quoted text clipped - 5 lines] > > Saul Levy I was talking about sighting from a public park with no instrumenls, and only the electric power poles to priivide gradiations. Although, I suppose you could say that the stars of the little dipper, whose handle extends from polaris, could serve as the hour hand of a clock. Right now, Jupiter is stuck in the spout of Saggitarius, God's teapot. Double-A Jupiter is not stuck, DA. It's still moving. Saul Levy >> It holds for Polaris too, oldfart! lmao! >> [quoted text clipped - 14 lines] > >Double-A > Jupiter is not stuck, DA. It's still moving. > > Saul Levy And the glass in your window panes is still flowing. Double-A > On Sat, 12 Jul 2008 11:01:05 -0700 (PDT), Double-A > [quoted text clipped - 17 lines] > > >Double-A No, it's not, DA! I try never to look at astronomical objects through my window. That ruins the view. Saul Levy >> Jupiter is not stuck, DA. It's still moving. >> [quoted text clipped - 3 lines] > >Double-A Double-A Don't you have a radio? When sleeping in my van I keep a radio going all the time. The batteries last a long time,and got real cheap. It gives you the time all night long. Jupiter is only good with a clear sky. Bert > Double-A Don't you have a radio? Yes, but they like to say only "3 minutes before the hour". Most night broadcasts are not local. > When sleeping in my van I keep a radio > going all the time. The batteries last a long time,and got real cheap. I can get two 9v for a dollar at the Dollar Store. > It gives you the time all night long. Jupiter is only good with a > clear sky. Bert Plenty of clear skies these nights. Double-A |
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