You should simply define a Horizon with the dates of your dome shutter.

Konstantin


Konstantin v. Poschinger
Hammerichstr. 5
22605 Hamburg
040/8805747
http://www.astro22605.de

Am 08.09.2007 um 11:27 schrieb Lawrence Harris:

> I am wanting to identify a suitable projection for Guide. I want to
> produce a
> grid that I can align my observatory shutter to - eg 90 degrees
> azimuth (due
> east) - that then shows sky targets (Messier etc) vertically
> upwards, keeping
> the same azimuth, so that I can list targets to image without
> moving the dome.
>
> I selected simple cylindrical but this did not work; following a
> vertical grid
> line showed changing azimuth, and therefore the targets would go
> outside the
> shutter.
>
> I have tried several but none seem to fit. This seems to be a simple
> requirement; can anyone advise?
>
> TIA
>
> Lawrence Harris
>
>
>

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