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  #21  
Old 09-02-2012, 04:38 PM
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jenchris (Jennifer)
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The pic in the above post shows the panel overlap and ridge cap arrangement - doesn't leak - I have made up scissor clips to hold the two edges together when closed. I'll photo them later for y'all.
They are stainless M12 bolts (on the wedge)- and only quite short - they don't appear to flex much - the plates are 15mm steel.
Never used the wedge on a tripod - it used to vibrate a bit on the 100x100 steel post I had it on before but doesn't appear to now.
The rusted bracket behind the wedge is an old hacksaw I picked up and hung there and forgot to move !! lol

Since it is a Meade alt az mount, I would never expect to get more than about 5 mins per exposure without slop - simply because the machining of the gears is so pathetic. I've seen better gears on an Indian lawnmower. A Trabant would be classed as high end engineering in comparison. A little flex at the mounting plate is not going to be noticed.... even if it was significant - which it isn't.
If you do the engineering maths, with an off centre mass moving at 15 arcsec per second constant, the torsion would be less than 1gmcm/mm^2 on the bolts (divided by three for the three bolts) -
The affect of the OTA on the forks with droop and hz would be so much greater that it diminishes into insignificance.. The bolts stay. Besides I already shortened them by 50%.
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  #22  
Old 11-02-2012, 05:05 PM
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mozzie (Peter)
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well done !!!!!!!!!you won't know your self having a permanent setup....the ease of just closing the roof when the weather comes in.....
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  #23  
Old 18-02-2012, 09:30 AM
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jenchris (Jennifer)
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At last... I got a few hours in last night.
The humidity was a little high, but the sky was clear - so I went out to grab some photons and see if my guiding and setup could get decent stars on my new pier.
I did a run of 6 x 3 minute and 3 x 6 minute runs - flawlessly.
I was hoping I'd got cone nebula, but it is actually the wrong star I took so cone never appeared when I processed, but the stars remained round!
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