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First cut on my home brew mount adapter


triley4

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Going to drill my hole for my azimuth adjustment doul - my Magnetic declination is -2° 5' from my location and aparently the

Declination is NEGATIVE (WEST).

So question is - If 12 O'clock is as it is on the original tripod do I drill closer to 1 am or 11 pm on my mount apadtor? The mount / pier faces pretty much magnetic north according to my compass. Would 12 O'clock suffice on an az eq6?

Pictures of my double bull nose brick pier to follow pending an answer that oozes with authority and knowledge :)

Nb answers must be posted with a simpleton in mind and understanding.

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Lovely looking pier. Very nearly went this route although not as pretty I'm sure. May I ask, how are you going to protect those wires across the patio? And how are the bottom bricks attached to the patio? Thanks!

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There is a bin over it all at the moment - There is a roll off roof shed going over once I've got the adaptor in place. Keep an eye out as I'll start a thread on it shortly.

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There is a bin over it all at the moment - There is a roll off roof shed going over once I've got the adaptor in place. Keep an eye out as I'll start a thread on it shortly.

It's just sat on a bed of motar and brick with 2 rebars going through, up from the paving slabs, to the concrete cap. Will be drilling and fixing some M10 or M12 into that over the coming days. Just finishing off the adaptor. From the brick build posts I have read aparently a brick built pier with or without rebar is stable enough without anchors as long as the slabs don't move.
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The classic designs for this sort of thing usually show a gap between what the pier sits on and the area the observer walks around or sits on to get rid of that source of scope shake.

OTT? Don't really know but if you get any shake from that .............................. 

John

-

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If the mount/scope is just used for viewing the slabs should be fine, if it goes the AP route just set a timer so your a couple of slabs away when the shutter opens and don't go back until its shut.......very tidy brickwork....

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Yeah I'm going to float a deck around this in the coming weeks - then moving forwards build a roll off roof and warm room about 3 metres from the pier. As I havnt first lighted the set up yet I have no real idea about vibrations. I do notice a vibe if I lay my hand on the concrecte cap and mildly slap the brick work about 3/4's up. It disappears in a micro second but it'll prove trouble some when I start imaging. I'm hoping the az eq6 and my imaging rig will surpress this with its weight but then again it might make it worse. When i installed the rebar as I went further up the column laying bricks I had to put it under some mild force as I wasn't careful with correctly aligning it vertically. The vibe feels like a taught piece of metal being pinged except it's through brick. I'm really hoping this has not made the pier crucially flawed. The tick of the mounts motors might trigger the vibe.

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