Hi Mel

The ticks point in the direction of the PA and the length of the ticks 
are very roughly proportional to the separation.  One word of warning 
about the WDS catalog used in CDC.  It is very much out of date. This 
isn't a problem for casual use of the catalog but don't depend on it for 
any serious work.

Jim Jones

Mel Richardson wrote:

>Hi,
>
>I have installed the Washington Double Star Catalogue and have two
>questions:
>
>1/ cdc launches with the double stars ticked and I have to deselect
>the catalogue manually.  How do I save the deselected state?
>2/ The ticks are short lines of differing lengths and orientations
>with some stars having multiple ticks.  I would guess they indicate
>p.a.'s and separations but can someone tell me exactly how to
>interpret the marks?  Thanks.
>
>Mel R.
>
>
>  
>




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