Just a further update-
Luckily over the last couple of months I had to buy three adapters from the camera to the FLI Atlas focusor. One was 21mm, one was 27mm and one was 31.5mm. Now to remind others, I had to buy these as the ray trace diagram that was sent to me from GSO is not right. It says the back focus on the old tube is 281mm, when in fact it was not near that. It turned out to be something like 290mm. So I had to guess for the first two and then the final adapter got it right.
Now funnily enough the second adapter worked out right with the smaller adapters (mirror back to focusor) that GSO supply on their scopes.
Now for the sake of others not having to do the same stupid experiment I can say that it appears that the back focus on the new truss is 270-272mm. This assumes that the primary and secondary are the same distance apart (I used my mirrors from a Tubed RC12 from GSO) and that the primary adjustment screws are half way in. On my scope it is 271.84mm from the mirror back to the sensor.
Once I could collimate the scope I could collimate it too. See attached image. It needs a little tweek but it is pretty close to the mark. I will do some test images to see how sharp this collimation is compared to the previous one where I shot the meat hook.
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Originally Posted by Satchmo
So it is heavier than the steel tube version ?
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It looks that way Mark.
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Originally Posted by dpastern
Paul - do you think a 10" RC truss would be usable with a EQ6 Pro? I expect not due to weight/stress, but thought I'd ask. Not that I'm in a position to buy anything now. Hell, I haven't used my current setup in 3 years due to bad back and laziness and a lack of a permanent observatory and also poor skllls on my part.
Dave
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I would not like to say. Although there is not going to be much swing arm due to the truss. My opinion is maybe. Best bet though is to ask Michael from Bintel and see what he says.
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Originally Posted by Star Hunter
testing scopes is good for the soul..
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Yes, probably but I want to get on with imaging Jim.
