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<blockquote data-quote="kelvin" data-source="post: 5757">CH thank you for your succinct reply its exactly what I'v been trying to discover, but it does leave me with a big question mark over why my system which did not have the 3 degree correction applied is working so well over the entire arc.My dish is on a five foot pole so I can easily check for any improvements at various points throughout the the arc by pushing the top or bottom of the dish to check for an elevation error and I can achieve absolutely none at all.As I'v now found my dish was incorrectly set up I'm surprised at the results because at any point on the arc my dish must be either too low or too high due to it having its maximum elevation at zero degrees azimuth, and not at 2 degs east.I suppose the question is how much difference in the polar mount elevation is created by a movement of 2 degs azimuth, not much I suspect, and if I was much further west of Grenwich say Ireland for instance then it probably would be significant.kelvin</blockquote>

[QUOTE="kelvin, post: 5757"] CH thank you for your succinct reply its exactly what I'v been trying to discover, but it does leave me with a big question mark over why my system which did not have the 3 degree correction applied is working so well over the entire arc. My dish is on a five foot pole so I can easily check for any improvements at various points throughout the the arc by pushing the top or bottom of the dish to check for an elevation error and I can achieve absolutely none at all. As I'v now found my dish was incorrectly set up I'm surprised at the results because at any point on the arc my dish must be either too low or too high due to it having its maximum elevation at zero degrees azimuth, and not at 2 degs east. I suppose the question is how much difference in the polar mount elevation is created by a movement of 2 degs azimuth, not much I suspect, and if I was much further west of Grenwich say Ireland for instance then it probably would be significant. kelvin [/QUOTE]

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