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Hi -
Used one with the reducer on a G-11 for a while. Can be wildly frustrating -
It has a definite lack of backfocus distance and I had to get special adapters machined for a FLI PDF - that was the only focuser I could use with a ST10 with CFW10.
In saying that as a portable scope it is amazingly robust and once collimated and locked it maintained it's collimation to the present day - I have had no need to touch it and we are talking in a time frame of years.
The only other problem was it's cool down time - but once cooled down it gave excellent pictures.
Cheers
Geof
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