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Some Advice

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3 replies to this topic

#1 BullTerrier


    Vostok 1

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Posted 05 June 2013 - 09:24 PM

Hi Folks. First post of mine.
Have learned much from reading the posts. Was waiting till I got my 3.5 from
the "Mother Ship" as you call it, before I posted. Your posts helped me decide
to get the scope I drooled over in S&T magazine when I was a teenager.

Received it today, nearly 20 weeks after ordering it. Jim was absolutely great
to deal with. Professional and very accommodating.

Anyhow, to the point, I have a few questions:
1. When manually pushing the scope in RA and Dec, should it be a little stiff ?
I'm used to a C8 which pretty much moves freely so I was a bit surprised of how
stiff the Q was when I tried moving the scope (without the slow mo knobs) .
Maybe, because there are no clamps on it like the C8, it has to be a bit stiff.

2. The clamp (knob) on the fork on the opposite fork that the Dec Manual Slow
motion knob. What is it for ? Should it remain loose or should it be snug when
using the scope ?

I'm sure I'll have more questions as time goes on but would appreciate some help
with these questions.

First light, I hope, will be tonite !

Thank You

#2 Michael Lomb

Michael Lomb

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Posted 06 June 2013 - 02:53 AM

The right ascension dial should be a bit stiff. The pinion arrangement depends on friction. If you want a large change in ascension you just hold the fork mounts with each hand rotate. There is no clutch to work with and no black lash. I had to stiffen the ascension dial after servicing to avoid slippage when using the ascension knob. Details of this are subject of a previous post.


I would not get carried away with loosening the ascension dial, the adjustment screw can disengage altogether. Stiff is good, slippage is bad.

The dial on the L fork if turned counter clock wise can lock (or at least stiffen) the declination dial on the R fork mount. I just leave it loose. I have never found a need to use it at all.

#3 Billydee



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Posted 06 June 2013 - 02:59 PM


Michael is 100% correct. Welcome to the club and enjoy your new Lady.


#4 ColoHank



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Posted 06 June 2013 - 04:29 PM

The knob on the left fork is the declination lock. It should be loose when observing and tightened (counterclockwise) when the scope is transported. I suppose it might be desirable, as well, to tighten the declination knob if you have a camera mounted on the scope so any imbalance doesn't cause an unwanted shift in declination.

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