Quote:
Originally Posted by gregbradley
Without a doubt you want the SBIG model with the built in off axis guider. I think its the STF (not sure of the model names).
If you don't have either self guiding, self guiding in the filter wheel or an off axis guider you are asking for trouble big time and will end up throwing the scope into the scrap heap it will be that annoying!
Guide scopes at that imaging focal length are going to be very tricky and an ED80 whilst a lovely APO scope has a weak, semi loose focuser which will not be up to the job.
I just installed an SBIG STi guider guide kit on my CDK17. I intend testing it first clear night to see if it will guide accurately at 3 metres focal length. it is very rigid even though its only a 100mm lens guide "scope".
I can let you know how it goes.
I have imaged semi successfully using a Vixen VMC 95 guide scope (over 1000mm focal length). I would sometimes get slightly eggy stars in some angles. With an offaxis guider I almost never do. And that was on a PME mount with PEC on.
Greg.
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Thanks Greg. I take it with self guiding you don't need the separate guide-camera like a Lodestar or something because there's a chip in the main camera that does the job?
What about the MOAG or MMOAG? Do you still need that? I wouldn't think so if the camera is self-guiding.... Trying to make sense of it having never seen one set up and had a play with it.
I just sent an email away to Peter looking for a total package to go on the back of the RC300. Let's see where that goes.
Hey you guys I much appreciate all this. Once it all comes together I am sure I will be far better armed to pull the trigger because of all of your advice/experience.
Cheers!
Baz.