Quote:
Originally Posted by multiweb
That new focuser really looks the part. Jealous. 
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Hi Marc
I used to shoot say 10x3 min subs, Pause, slew to a focusing star (field), fit Bahtinov Mask, touch up the focus, remove Bahtinov Mask, slew back, re-frame and shoot another set of subs. And I still suffered from focus drift, possibly mechanical rather than thermal.
Now, I can just inject an @Focus3 focus run in The Sky X Pro (Camera Add On) and in the 3 or 4 weeks where I have been doing this, it all seems to work very well.
The ESATTO has 0.04 micron steps and makes a lovely noise when focusing. Oh, and its also a nice, bright, Italian Red colour.
Cheers
Dennis