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- From: higgins@fnalf.fnal.gov (Bill Higgins-- Beam Jockey)
- Newsgroups: sci.space
- Subject: GEO coverage, aurorae (was Re: SPS fouling astronomy)
- Message-ID: <1992Aug17.052502.1@fnalf.fnal.gov>
- Date: 17 Aug 92 11:25:02 GMT
- References: <1992Aug07.172531.129551@cs.cmu.edu> <63732@cup.portal.com> <1992Aug15.224819.15041@dartvax.dartmouth.edu>
- Sender: news@fnnews.fnal.gov
- Organization: Fermi National Accelerator Laboratory
- Lines: 37
- Nntp-Posting-Host: fnalf.fnal.gov
-
- In article <1992Aug15.224819.15041@dartvax.dartmouth.edu>, Frederick.A.Ringwald@dartmouth.edu (Frederick A. Ringwald) writes:
- > Trees could block objects near the horizon, but come to think of it,
- > you'd have to be above latitude 82 degrees, which is more northerly
- > even than Point Barrow, to get completely away from the
- > Con-Ed-stellation. GEO is about 6.6 Earth radii away, and
- > arctan(6.6) = 81.4 degrees (My thanks to Mike McCall from Rutgers
- > for pointing this out.); atmospheric refraction will give
- > another 34'.
-
- This is the reason the youthful Arthur C. Clarke recommended three
- geosynchronous comsats. Two don't *quite* cover the world.
-
- > And I never saw the aurora from Alaska; I saw it from Arizona.
- > (The famous 1989 March display: no kidding!)
-
- I was in Texas that night (at a conference where I met Dennis Wingo),
- and *could* have seen it, but nobody told me. :-( The Tevatron
- tripped mysteriously, but we haven't been able to pin that on the
- magnetic storm-- the Tevatron trips mysteriously all the time.
-
- There was a swell display visible from Chicago in March 1991, though.
- Nearly busted my dialing finger phoning everybody north of fortieth
- parallel... Kalamazoo still hasn't forgiven me for waking them up on a
- cloudy night.
-
- Bill Higgins | "[Theatregoers], if they did not
- | happen to like the production,
- Fermi National | had either to sit all through it
- Accelerator Laboratory | or else go home. They probably
- | would have rejoiced at the ease
- | of our Tele-Theaters, where we
- Internet: HIGGINS@FNAL.FNAL.GOV | can switch from one play to
- | another in five seconds, until we
- SPAN/Hepnet: 43011::HIGGINS | find the one that suits us best."
- | --Hugo Gernsback predicts
- Bitnet: HIGGINS@FNAL.BITNET | Channel-Flipping in
- | *Ralph 124C41+* (1912)
-