WOW! That's tight!!
Gemini, 3 star alignment then Polar Align Correction and I can place a star in the cross hair with a 100Â° slew! That is arc seconds would be my guess.
CGE Pro vs Losmandy Titan + any owners of CGE Pro?
Posted 15 March 2009 - 01:41 AM
Posted 15 March 2009 - 12:53 PM
Yes indeed, with a good polar alignment and 3 stars I can hit a target every time. When I ask for a star, it will many times land in the cross hair, not always as it can be slightly off, but many times.
The secret is Polar Align Correction and 3 stars on one side of the meridian. Then if I want I can do the other side of the meridian with a couple of stars, but not really needed unless I have to do a meridian flip.
That is another bonus of the system, it will track well beyond the meridian, which is important for imagers.
Gemini is not difficult to use or learn really, it is quite simple much like DOS compared to Windows, it has a directory type interface instead of an icon type.
Posted 15 March 2009 - 01:44 PM
The new All-Star Polar routine is really growing on me. Where I was reluctant to go go through anything more than a quick visual setup before (unless I was imaging then I was resigned to something like 30 minutes worth of setup), I can now do an effective polar alignment in just a few minutes.
With a 2 star alignment and the 4 calibration stars my goto targets all over the sky are consistently in the center 3rd of a 13mm T6 Nagler with my C11 (the Nagler is putting up 22 arc' fov with this scope). With a local Sync (within about 10Â° of a subject) the gotos are dead center. I figure I could rely on this to put an object on a small CCD sensor just about all the time.
I have no numbers to compare but the older 4.12 firmware did not appear this accurate.
Posted 15 March 2009 - 04:22 PM
i think the gemini system is fantastic but then i have been using it for quite some time.
drawbacks - mounts in this category are not easy to lift. they get heavy at 4 in the morning. i am happy to have my titan in a permanent home.
what an exciting time shopping for a new mount, good luck in your search!
Posted 15 March 2009 - 04:29 PM
Posted 16 March 2009 - 03:37 AM
Do you think it was possible to send in some tracking data? PE curve would be great. What about pointing accuracy (Blueman said his Geminy is deadly accurate when pointing, can you confirm that for your setup?).
Did you tune up your Titan or did it work 100% out of the box? Honestly, I am useless when it comes to mechanical stuff. I can't buy a mount which is "great after you make these little adjustments, tune up, hammer bumping :smash:"... i need something that performs great out of the box, without a need to disasemble it, tune up and put it all back together (I am good at analytical and managerial stuff, but give me a screwdriver or hammer and I am lost )
Sadly, I learned that Celestron often makes great mounts but they need to be tuned up (regreased, etc.) to perform well. My CG-5, for example, was shaky, inacurrate and almost useless for AP. But I found great tunning website (Anstronomy Boy?), and everyone reported great improvement after tuning the mount.... well, but I can't do these things, as I've said. So I've returned CG-5 with C8, and bought myself nice C14... and now I am at a hunt for reliable great-out-of-the-box mount, as you know :-)
Thank you for your help. Hope to hear from you soon
Posted 16 March 2009 - 08:38 PM
clean and regrease annually. it is not difficult. after a while you will get to know your mount no matter which you choose. i have been working on an article about pointing but there is lots left to do on the subject. here is what i have so far:
Posted 19 March 2009 - 09:29 AM
I was thinking about getting MI-250, too. God, Larry is such a great guy. Really supportive, always answered my questions in few hours and with elaborate answers. WOW! I am a newbie, but he was very patient and gave me really good recommendations and was trying to help me as much as one can. I almost bought the mount from him, but then I found out that after paying customs and VAT (I am importing the mount to Slovakia), I will pay additional $2150 just for these customs and VAT. That overpriced the mount tremendously if I only could have that MI-250, it looks great. Cloudy nights posters said its is a great mount, better than Losmandy Titan (but -15 lb payload though). Guys, lets fight against import tax