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Thanks Gary,
I'll try your method to see if I like it.
In most sessions, I tend to concentrate on a particular part of the sky and if I don't stray too far from the selected (1 star) alignment star, I get good accuracy. if I do switch to a new part of the sky, it only a matter of selecting a new alignment star. -very quick.
Brisbane's sky has not been cooperating this year, and if I do get a good night, I don't want to waste any of that short window between dark and dew adjusting equipment.
I'll take on board your comments about the negligible nature of sender drag, however I did some experimenting last night, and the result was that if I un-balance my scope without the Dec sender belt on, it will pivot on the axis under its own weight, but with the belt attached it stays (firmly) where it is. The same happens with the RA axis cog disengaged, so there must be some drag. Static load only perhaps?
Regarding accuracy of any type of goto or push to device, my opinion is that if the object is in the ep field then the unit has acheived its function. Realistically its a bit too much to expect ultimate levels of accuracy out of portable mass-produced amateur equipment (such as Eq mounts). With an accurate polar alignment prior to starting, both Argo and Synscan acheive this. I recon they both do a good job.
regards Rider
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