Preview of Skywatcher AZ EQ6 Mount
Posted 24 September 2012 - 10:08 PM
but here's a site with more photos
and a preview video of sorts
Let the wild speculation begin.
Posted 24 September 2012 - 10:57 PM
Posted 24 September 2012 - 11:39 PM
I think the fundamental periodic error will be OK. The bigger challenge is the gears. If they still use a stepper drive like the EQ6, the gearing should be simple and the periodic error due to the gears should be low.
Posted 25 September 2012 - 07:06 AM
APM had an announcement in the vendor forum a couple weeks back. They're showing a price of 1890 euros including VAT.
Posted 25 September 2012 - 02:26 PM
Not that there's anything wrong with that - I think every GEM should reach 0 and 90.
Posted 04 November 2012 - 10:28 PM
Posted 09 November 2012 - 03:44 PM
Posted 10 November 2012 - 06:05 AM
The encoder feedback is rather coarse: 6356 count (or 25424 ticks)/360 degrees (which is approx. 3.4 arc-min resolution) for push to. Note: 6356 = 2x2x7x227 so most likely the encoder is a Renishaw magnetic tape based.
Interesting good enough for goto but not really good enough for imaging.
I looked at using a mouse laser sensor with 5000 ticks/inch and a 8" ring - better but given you need a 10x sample rate to get better accuracy.. still beats this through!
Posted 10 November 2012 - 09:08 PM
Ps: I am sorry for the weird typing....me and the tablet are not very good friends.