Posted 22 August 2009 - 07:34 AM
Currently looking for a GEM for mostly visual use and start doing some AP. Looking at the Vixens as i've had experience with an EQ6pro/Atlas and I don't really consider it to be portable. Then the Heq5/Sirius is still quite heavy and for around a AUS$1000 more i could have a Sphinx SXW or GPD2 which by all reports are much better mounts and still very portable. Will probably be looking at it to hold a VMC200l with 6.3 focal reducer and an ED80. Using a DSLR for photos.
Would either the VMC200 or ED80 with a guidescope piggybacked be too much weight?
Could anyone with experience give an estimate on how long the subs could be taken on the Vixen mounts without quiding? Length of subs on HEQ5/Sirius without being guided?
How user friendly is the Starbook hand controller?
Posted 22 August 2009 - 08:10 AM
Would either the VMC200 or ED80 with a guidescope piggybacked be too much weight? ...Could anyone with experience give an estimate on how long the subs could be taken on the Vixen mounts without quiding?
Which guidescope are you using and how much does it weigh? The SXW can carry a 22 lb load according to their specs, so as a starting point you might want to weigh your gear, including the mounting brackets, camera, etc. I use a C6 SCT and an AT66ED refractor on my setup and with all the extra stuff it adds up to about 24 lbs.
Regarding the unguided exposure length question, your VMC200 with it's very long focal length will severely limit unguided exposures with any mount. With the ED80, you should be able to get 2 to 3 minute exposures before you start throwing away subs.
Posted 22 August 2009 - 09:28 AM
VMC seems like to much for mount with a scope piggybacked. Had this opinion in other forum as well. Will probably just use it for observing and keep ED for imaging.
Posted 23 August 2009 - 08:06 AM
The sphinx is very portable mount much more so than the cheaper mounts in my opinion because of the tripod. I have found the tripod to be good, its not in the same league as the chinese ones.