Quote:
Originally Posted by Joshua Bunn
How will it slip out the top? unless you point bellow the horizon (maybe working on the focuser? I would like to suggest, your pointing will be better if you use all 3 screws, I'm sure of that. I noticed less movement of my full length dovetail on my scope when i used all 4 plungers on the ME as opposed to just 3. Just had to add some weight to the versa plate at the front to get the Dec to balance.
Josh
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Good tip. I 'll look at shifting that around. I think I got that wrong, it was the bottom knob that screwed in. Pointing wasn't too bad - a bit off. Not a problem with the Proline as its a large FOV. With the Trius it was a bit off with its smaller FOV. Autoguiding though wasn't so great which surprised me as the last I used the mount with the AP140 it was spectacularly good. The heavier load is showing up its not perfect. I think the Polar Alignment needs to be tweaked. Balance was perfect. It had been raining recently so perhaps its shifted a tad. I noticed drift between subs so the PA is out a little.
Also the scope requires the camera to be very very square otherwise you get some odd shaped stars in the corners. My tilt tip adapter on the Trius was off.
Precise focus is another thing that I wasn't able to achieve manually although I got it pretty close. I am sure it can get closer with the Atlas focuser. It really is quite a small critical focus zone. Its the fastest scope I have ever used (F5 Tak BRC and my CDK 17 with reducer is F4.5 are the 2nd fastest).
I should look up exactly what a Riccardi Honders is. It looks a lot like an SCT with a corrector but its more than that with a different shaped corrector plate and mirrors with a corrector lens of some type. The mirror coating is on the underside of the primary mirror glass which is very unusual. I guess it can't get dirty or degrade there.
Greg.