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<blockquote data-quote="ArloG" data-source="post: 1165288" data-attributes="member: 418555">Digital angle gauges are cheap enough that nobody should purchase an inclinometer. With 0.1 to 0.01 degree resolution it's a no-brainer.The CM/Raven/Andrews dish &quot;look angle&quot; is indeed 22.5 degrees. Think of a billiards table banking off a side rail. The lnbs 'sees' signals bounced off the dish face.In #14. The red stripe is with the polar elevation angle pointed true North. The North Star. Same as a person with a telescope with equatorial mount would do when setting it up.The blue stripe is off the back of the dish. Considering the 22.5 additional degrees that the dish is &quot;looking&quot; up in the sky. You would calculate declination by adding that to the given declination angle for a prime focus dish.Of course with the dish then swung on the pivots so that it is as high in the arc, zenith, as it can be. The dish ten would be aimed at true South.The the fun begins.That's a nice mount. Too bad the photo is so small.The blue wedge is how the dish would be on the mount with 22.5 degree look angle compensation.The light green wedge is after declination is added. And the upper right illustrations show the effects.The last diagram is where the fun begins and should clearly show how a digital gauge is superior to an inclinometer.</blockquote>

[QUOTE="ArloG, post: 1165288, member: 418555"] Digital angle gauges are cheap enough that nobody should purchase an inclinometer. With 0.1 to 0.01 degree resolution it's a no-brainer. The CM/Raven/Andrews dish "look angle" is indeed 22.5 degrees. Think of a billiards table banking off a side rail. The lnbs 'sees' signals bounced off the dish face. In #14. The red stripe is with the polar elevation angle pointed true North. The North Star. Same as a person with a telescope with equatorial mount would do when setting it up. The blue stripe is off the back of the dish. Considering the 22.5 additional degrees that the dish is "looking" up in the sky. You would calculate declination by adding that to the given declination angle for a prime focus dish. Of course with the dish then swung on the pivots so that it is as high in the arc, zenith, as it can be. The dish ten would be aimed at true South. The the fun begins. That's a nice mount. Too bad the photo is so small. The blue wedge is how the dish would be on the mount with 22.5 degree look angle compensation. The light green wedge is after declination is added. And the upper right illustrations show the effects. The last diagram is where the fun begins and should clearly show how a digital gauge is superior to an inclinometer. [/QUOTE]

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