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Post			Author	Forum	Replies	Views	Posted [asc]
		Thread: Altitude correction, Sun, with reflecting artificial horizon Post: RE: Altitude correction, Sun, with reflecting arti... These are what I bought; http://www.amazon.com/Accuracy-Engineers-Workshop-Equipment-Building/dp/B014YHII8K?ie=UTF8&psc=1&redirect=true&ref_=oh_aui_detailpage_o02_s00  If my math is correct they work ...	bletso	General Topics Here	9	24,305	03-31-2016, 10:37 AM
		Thread: Altitude correction, Sun, with reflecting artificial horizon Post: RE: Altitude correction, Sun, with reflecting arti... I bought two 80 mm - 20' / 2mm levels for $11 ea.  That is about 0.4 degrees.  Amazon  I also resurrected an old telescope mount for easy of levelling	bletso	General Topics Here	9	24,305	03-29-2016, 02:51 PM
		Thread: Altitude correction, Sun, with reflecting artificial horizon Post: RE: Altitude correction, Sun, with reflecting arti... Get a 1st surface mirror, no ripples, no freezing, (well except for you).  Remember to level it.  $20 for a 6 X 6 1/4 thick glass unit from www.firstsurfacemirror.com  It is more accurate to measure l...	bletso	General Topics Here	9	24,305	03-27-2016, 09:16 PM

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