Can you help me please? I have an AVX and would like to have the thoughts on the community on an issue I have.
On the AVX there are 2 Orange decorative covers, under each one it covers a tension ring, which in turn one of them covers 3 grub screws. Now the question, how 'tight' should 1) the grub screws be? and 2) tension rings be?
Should they be VERY tight? moderately tight? or just nipped up? I suspect that it should just be nipped up and allow gravity to keep the mount in place when in use, but not sure.
Supplement question would be, how would these grub screws and tension rings effect the over all performance of the mount? as in, if they were set wrongly would that effect the performance with PHD2?
Thanks for taking the time to read this post!
Well... an update.
I should know better, my first thoughts, as a general rule, assume that there is a high probability of a case of user error when something goes wrong with your mount/scope/camera/focuser etc etc. However in this case I had checked everything, set-up, balance, polar alignment using ASPA, and what cemented my thoughts process was the fact that I had an excessive amount of 'play/movement' on the altitude part of the AVX. At the same time I'd connected PHD2 and after getting things up a running I found that my graphs were off the screen, they were all over the place, which left me scratching my head trying to work out what was going on here.
My first attempt to fix this was to try the Polar align within PHD2 to see if that would bring things back, well I've read so many reports about PHD2 having a great polar alignment routine, but nope... no joy with that and to be honest if anything, things were worse, if that was at all possible.
Weeks passed with the same results and being completely at a loss and at one point was all but going to negotiate with the good lady wife for a new mount. Now... that was not a particularly good prospect considering I've just spent a whack of money on another project, my chances of success for this year were slim to say the least!
Now you may start to wonder were this story is going, well, I was out again last night, with exactly the same results, hmmm have you ever seen a grown man the wrong side of fifty and closer to sixty sitting in my shed on the point of tears? that was me, my hobby was slipping away from me...
Then I stopped and thought of an inspirational speach I heard from Stephen Hawkins about looking up and not down at your feet, and try to make sense of what you see.
Then I had a thought, or maybe someone push the thought on to me but the thought was along the lines of, there's nothing wrong with the mount, its perfect, it's just been hyper tuned by David Woods at Dark frame Optics, the thing was working fine! so what has happened?
USER ERROR ALERT...
I'd ripped down the mount a fair few times and although loaded back on the same pier, as you know things don't go back in EXACTLY the same way. So when I started up PHD2 it was with the existing calibration information, and with time this was no longer a proper fit for the mount as I had changed and set up the mount so many times.
And this was the thought that came crashing into my head, "recalibrate PHD2, fool!" and I did, and guess what? it worked, perfectly! why had I not thought of this before?
no idea, I guess I got caught in the trap of thinking this must be a mechanical fault and not a user fault. However I was running out of time last night as I had a very busy day at work today and had to get some sleep but I did manage a full 300 second exposure with ZERO star trails! delighted is an understatement!
no asking the wife for £1500 GBP for a new mount!
going out again tonight with the last of the astronomical dark and see if I can get some imaging done to keep my going over the summer.
Thanks for reading this ramble and clear skys to you!
Edited by Philkib, 20 April 2018 - 02:06 PM.