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Re: AO-40: transponder off!!



Nova squint works fine for me.

Bob Nave wrote:

> Nova has a problem with Squint - Mine does not work either
> and I'm using the lastest version
>
> Bob - WB9CNS
>
> ----- Original Message -----
> From: "Gene Harlan" <atvq@hampubs.com>
> To: "Alan K. Adamson" <ne1h@highrf.com>; "Margaret Leber"
> <maggie@voicenet.com>
> Cc: <amsat-bb@AMSAT.Org>
> Sent: Wednesday, May 30, 2001 10:59 PM
> Subject: RE: [amsat-bb] AO-40: transponder off!!
>
> > In my Nova program, the squint is always 0 (zero). Am I not filling in
> > something, or turning something on that I should? A have input the data
> for
> > ALAT/ALON.
> >
> > Thanks.
> >
> > Gene Harlan - WB9MMM
> > Harlan Technologies - publishers of:
> > Amateur Television Quarterly
> > ATVQ@hampubs.com
> > OSCAR Satellite Report
> > OSR@hampubs.com
> > http://www.hampubs.com
> >
> > -----Original Message-----
> > From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org]On
> > Behalf Of Alan K. Adamson
> > Sent: Wednesday, May 30, 2001 7:33 PM
> > To: Margaret Leber
> > Cc: amsat-bb@AMSAT.Org
> > Subject: RE: [amsat-bb] AO-40: transponder off!!
> >
> >
> > I'll offer the following.
> >
> > The squint angle calc in SatTrack is *way* off compared to something that
> > has a real geometry model for deep space satellites.  If you notice,
> > SatTrack uses the TLE mode for deep space objects (ao-40 counts as one).
> It
> > will only use the LEO model for the LEO sats.
> >
> > Because of this, there is an error of up to 20 degrees that I've seen
> > between SatTrack and Nova with the exact same alon/alat settings.
> >
> > Alan
> >
> > -----Original Message-----
> > From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org]On
> > Behalf Of Margaret Leber
> > Sent: Wednesday, May 30, 2001 7:10 PM
> > To: Douglas Braun & Nadia Papakonstantinou
> > Cc: amsat-bb@AMSAT.Org
> > Subject: Re: [amsat-bb] AO-40: transponder off!!
> >
> >
> > Douglas Braun & Nadia Papakonstantinou wrote:
> >
> > > My version of SatTrack predicts squints as low as 22 degrees
> > > for this attitude.  Did I mess up my fix for AO-40 vs. AO-13
> > > attitude calculations?
> >
> > On my SatTrack I've simply entered the attitude as given into the
> > software and assumed that the closer the squint is to 180 the more
> > favorable it is.
> >
> > Right now I'm tracking the bird 13 degrees below my horizon at about az
> > 80 degrees; the squint is reading as 157 degrees at MA 43, which I
> > interpret as an effective squint angle of (180-157)=23 degrees at my
> > location FN20hd=75W 40N.
> >
> > Most of DE is north of 50N, of course.
> >
> > 73 de Maggie K3XS
> >
> > --
> > -----/___.   _)   Margaret Stephanie Leber    / "The art of progress  /
> > ----/(, /|  /| http://voicenet.com/~maggie   / consists of preserving/
> > ---/   / | / |  _   _   _    `  _AOPA 925383/ order amid change and /
> > --/ ) /  |/  |_(_(_(_/_(_/__(__(/_  FN20hd / change amid order."   /
> > -/ (_/   '  K3XS  .-/ .-/    ARRL 39280   /___ --A.N.Whitehead ___/
> > /____ICQ 7161096_(_/_(_/__AMSAT 32844____/ <maggie@voicenet.com>
> >
> >
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>
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