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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
I have a steel pier for sale. This was purchased along with a pulsar dome and believe it is an older Pulsar model. The pier sat in a yard, exposed to the elements for a few years before I purchased it so there is some surface rust and flaking paint but will clean up nicely. £250 and buyer will need to collect from Suffolk.
I've set my scope up on it's pier in my ROR observatory, done a few drift aligns and started to take some images.
I've noticed a 'quite' regular dip in my DEC line on several nights.
Would anyone be able to have a quick scan of my log and offer any insight?
Could it be backlash? Could it be something with each rotation of the gears? Faulty tooth?
It is quite regular, although not always, and always in the same direction.
It doesn't seem to be adversely affecting imaging yet, but I've not tried anything too taxing.
I am after a bit of advice please.
Groundworks are about to begin for the observatory and I want to use L bolts in a template and set the bolts into wet concrete.
I have been looking at prices on Fleabay and wow, the stainless steel ones are quite expensive (M16 x 300mm are £44 for 4). Could I get away with zinc coated mild steel at half the price (M16 x 440mm) or am I setting myself up for trouble ?
The pier is inside the observatory though appreciate when observing on a cold evening there is a possibility of moisture/ice building up.
Also, is 300mm enough - I have been googling and although see lots of photos I have struggled to get exact measurements.
Thanks in advance,
ps the holes on the base of the pier are pretty big hence thinking about M16 - again, if this is overkill and M12 would be suitable please advise