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Question, is my pier out of level if I'm trying to PA (with asiair pro) and both directions are moving when I adjust the alt bolts? I can't get the mount polar aligned.
Mount neq6 pro
Pier mounted on a concrete slab
OTA c8 with .63 reducer
Camera asi294mc pro
Thanks in advance
As a newbie in AP I recently discovered that astro imaging isn't as simple as I imagined, it's not just "pointing and shooting".
The main point is that I need a tracker that will follow the sky's movement. But after seeing the prices at which decent trackers are sold I decided to see if I could build one myself from spare parts at my workshop. Turns out that I can, using two planks of wood a hinge, an arduino, a stepper motor, etc. So I decided to get to it, I have built the connection between both planks of wood with the hinge, but have now discovered a problem. After some investigation, I realized it's quite commonly named the "Tangent Problem" (the rod forms a 90º angle with the bottom plank). So the solutions offered vary from curved rods to involute pieces of plastic and tilting the rod.
I also saw another solution that was adjusting the speed at which the rod moves, and since I'm going to be using an arduino-driven stepper motor, I decided that this was the way to go. The problem is that I don't know in what ratio the speed has to increase over time to compensate the "Tangent problem".
That's why I decided to pose my question here as I'm sure someone must have done it already.
Sorry for my bad english, it isn't my first langnuage.
Thanks in advance and clear skies,
Just a quickie, I've moved and am relocating my steel pier. So, would postcrete do a decent job for the footing of my steel pier in conjunction with rebar and 14mm threaded bolts? I'd make the hole big enough to cater for the size of the pier base and threads, I'm just purely asking if it will be strong enough as it is designed to hold concrete fence posts up with fence panels in the wind. The alternative is to mix concrete but if postcrete in the right quantity will do the job satisfactorily I'd choose that for convenience.
Thoughts please 🙂
I am only a few weeks into astronomy and started off with a Celestron 9.25" Evo on the standard AZ mount. I guess with hindsight this wasn't the best place to start and also with hindsight I would have done better to have bought a GEM mount. Anyway, lesson learned and at 71 years old I have to speed up the learning process compared to younger enthusiasts I have 2 issues. 1/ Its a pain dragging the scope out into the garden and setting it up every time I think the fickled weather might be obliging. 2/ I now know that the mount I have is useless for long exposures and a wedge is fiddly to get polar aligned.
My question is, though I gather wedges are a PITA to setup etc is if I was to build or buy a pier for the backyard and use my existing mount + a wedge is this a reasonable way to go? Though it's fiddly to set the thing up once set I could leave the mount, wedge, etc covered up and would just need to drop the OTA on when I wanted to use it. Is this reasonable or am I missing something fundamental down near the bottom end of my learning curve
Any advice much appreciated and don't feel you have to spare my feelings