At 06:50 PM 1/13/98 GMT0, you wrote:
>Since obtaining my NGF-S focusser, TV 2" diagonal and Barlow etc I thought
>I'd try out the Losmandy counterbalance (2lb weight) on my 10" LX200 at last.
>
>I can get it horizontally balanced but can't get it vertically balanced at
>all. It wants to tip downwards, being top heavy when placed at 90 degrees.
>Movement of the counterweight makes no difference. I tried taping an extra
>1lb weight onto the 2lb weight and thus moving it further back to the rear
>cell to see if that made a difference but it didn't, so it doesn't look as if
>I haven't enough counterweight. It's as if the top of the rear cell needs
>extra weight.
>
>Any ideas or tips?
>
>BTW, when it is balanced horizontally, is the OTA supposed to stay in any
>position you place it in when the dec lock is off? It tends to swing down
>very slowly if placed at above 45 degrees.
>
>Thanks again
>
>
>Slainte mhath
>Mark

A counterweight is just that. Weight to counter balance weight. You may
need to
add weight on top to counter balance weight on the bottom. With the right
amount of weight at the right place (top or bottom) you should be able to
unlock the dec lock in almost any position with very little movement of the
OTA.
The Losmandy system works great for me. I use about 10 lbs. of weight to
counter
balance an ETX and a Ranger on top, Meade dew shield, NGF-S and 2" diagonal.
Your problem may be lack of weight on top. Adding weight to the bottom will
only make it worse.

Jim

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