Re: NOSS angular separation

From: Stuart Eves (stuart@evesreading.demon.co.uk)
Date: Tue Jun 18 2002 - 18:27:54 EDT


Tom,

Something to bear in mind is that the L pattern is only true for part of
the orbit. (At the sort of latitudes most people view from!). The
satellite that is "off to one side" has a different right ascension, so
its plane, and the plane of the two which follow the same orbit, must
intersect somewhere. At this point of intersection, all three satellites
will be roughly in a line. I think the FAS site contains a description
of the way the eccentricity of the orbits are controlled to ensure that
an effective baseline is maintained when this occurs.

Regards,

Stuart

  In message <015401c214a1$a233f740$4920db0c@mchsi.com>, Tom  Wagner
<sciteach@mchsi.com> writes
>Ralph McConahy just told me some information that is good to know for
>knowing what to expect when looking for all the components of a NOSS trio.
>That is, the NOSS trios are in an "L" pattern--one following the other on
>nearly the same track with a third 3 to 5 to one side.
>
>Another question---are they all equidistant or are two much closer together?
>
>Now I will determine the size of the field of view of my binoculars and get
>a feel for how far apart they can be when looking through those binocs.
>
>The next thing for me is to see a pair move through my telescope's field of
>view set at 25X.
>
>Thanks Ralph!
>
>Tom
>Iowa
>USA
>.....
>
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-- 
Stuart Eves

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