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gshennessy

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Posts posted by gshennessy

  1. Pointing corrections

    in ASA DDM85, 100, 200, 500

    Posted

    I wish to create a pointing model for my DDM 85. The list of corrections shows many terms

    that seem to map to a TPOINT like model, but there are two listed corrections that

    aren't obvious to me. These are Pier Correction RA and Pier Correction DE. Is there

    documentation to indicate what the formula is applied? For example, in TPOINT collimation

    is CH and the formula is CH sec(dec) applied to change in hour angle.

  2. Is refraction included in the postion?

    in ASA DDM85, 100, 200, 500

    Posted

    I have a DDM 85 basic mount, running autoslew 5.1.1.6. Page 4 of the instructions has a sentence that indicates

    that refraction is included in calculating the stars position, but I see no further discussion of this. Where is refraction

    configured? The SkyX apparently takes the position provided by autoslew, and adds refraction to that, so I am 

    worried that I am double counting the refraction effect.

     

    Thanks.

     

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