Posted 04 March 2013 - 07:56 AM
Done with captatio, now the quaestio..
I own an Astrotrac (with polar wedge and a photgraphic ball head)and I am wondering if, with its Dec unit, it could be enjoyable (only for visual purpose of course) with my C8.
I can not try it myself because I do not own an adapter Vixen-> photo standard, so I ask you if anyone has already tried it (or whit a similar scope)
Thank you for every suggestion
Posted 12 March 2013 - 01:10 AM
I think the C8 is alittle too much weight for the astrotrac
Posted 12 March 2013 - 01:41 AM
Posted 12 March 2013 - 06:59 AM
@ core Yes, it is.
I think I could obtain greater stiffness using TH3010 instead some small AZ head (like the german-made "Giro") due to its multiple fixing point (vs the 3/8" only), and the "visual astrotrac thing" is in fact a mere palliation (sometimes on holydays I do not have the room for 2 full mounts in my car. Or at least, no room wife-wise...).
If it is not too O.T., may I ask you which is the biggest telescope fully exploitable(APO refractor or Cass-based catadioptric only) could I load on the Astrotrac?
Posted 12 March 2013 - 08:45 AM
Posted 13 March 2013 - 05:39 PM
The polar scope is indeed the main weakness, rather "crude" and willing to crash down exactly at the worst time.
Posted 26 March 2013 - 06:16 AM
The "mount" can manage the fat SCT but need more counterweights of those avaible to me for a proper AR balance (if the weather improves I will try with some iron disks). I tried it only on some pidgeons (very bad weather here): the damping of vibrations was quite good (at low power of course, i.e. 100x ca) using the maximum spread angle of my tripod, while targeting was indeed difficult (but as i said I could not obtain a proper balance)