EQ in Alt-Az mode?
Posted 24 March 2009 - 04:57 AM
My thought is that I could use it for grab and go, and when I have more time set it up properly as an EQ. I am thinking head only as I am hoping to pick up a wooden tripod to put it on.
Thanks in advance for wise words and advice.
Posted 24 March 2009 - 06:58 AM
Posted 24 March 2009 - 07:12 AM
Some EQ mounts will work in alt-az mode some will not without a bit of modding.
I had an older EQ1 that went into in alt-az mode for my ST80 (no modding) . I also had an EQ3 that with a bit of grinding worked really well in alt-az, but it was too heavy so I went back to the EQ1 for the ST80.
I have some pics somewhere of the mod I did on the EQ3, I'll see if I can find them.
hope this helps
Posted 24 March 2009 - 07:17 AM
really?? alt-alt?? never heard of that mode. I'm not sure I'm following you? can you explain?
Posted 24 March 2009 - 07:29 AM
Posted 24 March 2009 - 08:08 AM
Posted 24 March 2009 - 09:04 AM
Thanks all. Any more suggestions welcome.
Posted 24 March 2009 - 11:52 AM
Posted 24 March 2009 - 12:16 PM
Alt alt has the first axis horizontal rather than vertical as in an alt-az or pointing at the pole as in a EQ. It's equivalent to a gimbal mount. There is no "Dob hole" at zenith. The equivalent of Dob holes occur on the horizon off the ends of the first axis. These types have traditionally been used in satellite tracking.
Posted 24 March 2009 - 12:22 PM
On the plus side, the scope at least looks a little more right-side-up on the mount most of the time. On the negative side, you still need the counterweight on the Dec shaft, and there's no good way to get the weight of that and the scope balanced near the center of the tripod.
Posted 24 March 2009 - 05:46 PM
Just my thoughts...
Posted 24 March 2009 - 05:55 PM
Posted 25 March 2009 - 05:58 AM
I shall keep my eyes peeled for a second hand EQ to experiment with I think.
Thanks again to all for all advice and info.
Posted 10 April 2009 - 11:32 AM