Well great session here, the hunidity actually dropped since my 11pm post, from 40% to 34% and the temperature rose by 2 degrees to 20C. No worries about condensation in these conditions. I did a more complete test on the ED150 tonight, visually, and got to put the Ronchi eyepiece on it for an optics test. Moving from Intrafocal to Extrafocal absolutely no aberration, the four thick lines stayed perfectly vertical with no spherical under or over correction, no depression or elevation, no astigmatism or zonal aberration. Seems perfect according to Gerd Neumann's chart.
Did a tour of the sky from Orion through the Tarantula and Eta C.
Tomorrow night, hopefully I will put the reducer corrector and Nikon on it.
Hope everyone's night is going well. Signing off.
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