Position Of Satellite In Sky In relation To My Dish
Mike
certain time of day there was a good chance of picking up the satellite.
I'm asking this because I have recently had a dish installed for 13 East in
Norfolk, UK. The dish is positioned approximately 6 inches off the ground,
all to my request.
My neighbour has large shrubs ahead but slightly to the left of where the
dish appears to be pointing. There is immediately ahead a gap and to the
right a low conservatory. I would like to know whether the satellite is
finding my dish above the existing height of the shrubs or in the gap.
Is it possible to see the rough satellite position in the Sky using the sun
?
Michael
Java Jive
> I can remember many years ago being told that if you could see the Sun at a
> certain time of day there was a good chance of picking up the satellite.
Certain time of day and certain time of year around the equinoxes.
> I'm asking this because I have recently had a dish installed for 13 East in
> Norfolk, UK. The dish is positioned approximately 6 inches off the ground,
> all to my request.
>
> My neighbour has large shrubs ahead but slightly to the left of where the
> dish appears to be pointing. There is immediately ahead a gap and to the
> right a low conservatory. I would like to know whether the satellite is
> finding my dish above the existing height of the shrubs or in the gap.
It's entirely your choice of course, and there may be very good
reasons for what you've chosen to have done, but normally, unless the
dish is unusually large or heavy, the aim is to get it as high up as
possible, to maximise the clearance over ground obstacles, to minimise
the chances of picking up ground originating interference from things
like central heating systems and passing vehicles, and to get it out
of reach of thieves and vandals, etc.
My site's section on satellite tv ...
http://tinyurl.com/6fpbyy
... standing in for ...
http://www.macfh.co.uk/JavaJive/AudioVisualTV/SatelliteTV/SatelliteTV.html
... has some general advice and a calculator for checking where the
dish is pointing (its 'alignment'). In relation to your query, see
particularly "Using The Sun" (click on it) in the Intro page, the page
on the Clarke Belt, and use the calculator's Google or OS map to
check the alignment.
> Is it possible to see the rough satellite position in the Sky using the sun?
There is also a program called GorbTrack, but, guessing that you're a
beginner with this sort of thing, I suspect you might find it a little
intimidating. There are others, but most of those I've checked don't
actually give the right answers - they make one or other of the
common errors that I indicate on my Intro page.
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Mike
my fifth dish. I originally had a BSB squarial installed at the front of the
house, on their demise I had an NEC 60cm dish and later added a homemade
"little witch" so that I could get 13 East and 19 East together. Later had
this replaced with a fully motorised Lenson Heath 80cm dish above the front
bay window.When the actuator ground to a halt after about 8 years I had the
setup completely removed. I was always fearful that the dish would either
get struck by lightning or damaged in the gusty winds.
I then had a Sky dish setup on the back wall of the house which has recently
been joined by the 13 East dish at the water butt.
Michael.
"Java Jive" <ja...@evij.com> wrote in message
news:ch9155lkps5vuj9le...@4ax.com...
Jerzy Pastusiak
> Is it possible to see the rough satellite position in the Sky using the sun?
yes
and this technique can be quite accurate
sorry but it is all in polish:
http://sci.pam.szczecin.pl/~pastupam/satel/az/czasaz.html
when using, remember to change (set) your time zone
"Strefa czasu: (GMT) + [xxxx] godz."
eg.: GMT+ [1]
Pzdr.J.P.
Jerzy Pastusiak
using simple geometry:
[Calculator for elevation of an obstacle]
http://www.satlex.us/en/elobst_calc.html
http://sci.pam.szczecin.pl/~pastupam/satel/test/
jp
_________________________________________
a...@b.it
past...@sci.pam.szczecin.pl says...
> On Sun, 5 Jul 2009, Mike wrote:
> > Is it possible to see the rough satellite position in the Sky using the sun?
>
A good help is the software Gorbtrack:
http://members.chello.nl/~berry.walda/GorbTrack_EN.htm
Best done at equinoxes, but you can by also in other moments.
Cheers,
Sleepy
Jerzy Pastusiak
> Best done at equinoxes, but you can by also in other moments.
totally wrong !!!
depends on localization
http://en.wikipedia.org/wiki/Equinox
vernal equinox: 20; 21 march
autumnal equinox: 22; 23 sept
for 2009, date when the sun lines up with
a satellite [HB] in Szczecin:
http://sci.pam.szczecin.pl/~pastupam/satel/az/czasaz.html
is:
atumn: 12 sept ; elevation diff = 0 deg.
spring: 01 march ; elevation diff = +0.1 deg.
jp
a...@b.it
> > Best done at equinoxes, but you can by also in other moments.
>
> totally wrong !!!
>
I was in a hurry and cut a cornee.
Actually, it is about 15 days after Autumn equinox and 15 days before
Spring equinox.
GorbTrack will tell you more precisely, depending on location, altitude
etc.
If you look for a post I did (on the right dates!) this year I explained
it more precisely.
Google can be of help.
Cheers,
Sleepy
Charles Ellson
ISTR somebody posting a more exact time but for practical purposes an
area that is illuminated by the sun between IIRC 10.30-11.30 GMT along
with around a yard above and below ought in practice be suitable for a
dish. Watching for x minutes either side of the precise time and
looking for nearby shadows can also give warning of potential future
obstruction by tree branches etc.
Java Jive
It doesn't have the correct non-standard skew for the Hotbird and
Astra satellites, which are respectively +3.5 & +7.5 degrees from the
standard settings.
On Sun, 5 Jul 2009 23:58:12 +0200, a...@b.it wrote:
>
> A good help is the software Gorbtrack:
> http://members.chello.nl/~berry.walda/GorbTrack_EN.htm
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