Moon Phase Project

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Day 12 waxing gibbous

 

Approx. Moon Rise / Meridian / Set: 1617 / 2217 / 0417
% Illuminated: 96%
Approx. Terminator: 58 to 71 W
Hightlighted Features: oceanus Procellarum ; craters Pythagoras, Schickard, Wargentin, Phocylides, Bailly

Observations

Sept. 20, 2010, pm

  • 100% clear, 4/5 transparency, 3/5 to 4/5 seeing

  • ED80 mounted on Orion Atlas EQ-G (PC)

  • backyard, Ottawa, Canada

  • terminator ~ 64 W

Sky conditions supposed to be excellent tonight, too bad it is almost a full moon and the sky is totally washed out for deepsky viewing.  It is however an excellent opportunity for me to systematically compare the impact of different colour filters on the visible contrast of the Moon.  I used my Lumicon filter selector to rattle through my selection of filters.  Blue #80a and a single line polarizer (half of my variable polarizer) provided the best improvement in image contrast.

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ED80 + #12a (yellow) - 178kb ED80 + #15 (dk yellow) - 165kb ED80 + #21 (dk orange) - 224kb ED80 + #25a (red) - 152kb
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ED80 + #29 (dk red) - 127kb ED80 + #80a (blue) - 196kb ED80 + #39a (dk blue) - 221kb ED80 + #56 (green) - 183kb
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ED80 + #58 (dk green) - 216kb ED80 + #85 (orange) - 165kb ED80 + cc30m (magenta) - 190kb ED80 + Baader Moon & Sky - 183kb
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ED80 + single line polarizer - 156kb ED80 + no filter - 167kb ED80 + 2x Barlow + single line polarizer (mosaic of 6 frames) - 546kb  

Oct. 19, 2010, pm

  • 30% clear, 1/5 transparency, 2/5 seeing

  • ED80 mounted on Orion Atlas EQ-G (hand paddle)

  • backyard, Ottawa, Canada

  • terminator ~ 60 W

Seeing and transparency were supposed to be basically nil, but after kids in bed I noticed that I could clearly see the moon, albeit through a thin layer of high altitude cloud.  I figured I'd go out anyway.  You can tell the images are taken through thin cloud as they're somewhat washed-out.

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ED80 + SLP - 171kb ED80 + SLP + 2x Barlow (mosaic of 2 frames) - 373kb    

Jan. 16, 2011, pm

  • 100% clear, 2/5 transparency, 2/5 seeing

  • ED80 mounted on Orion Atlas EQ-G (PC)

  • backyard, Ottawa, Canada

  • terminator ~ 58 W

Another very cold night (-20degC).  Mount worked well, but laptop struggling.  Never did get very steady seeing, but then again the forecast didn't call for it.

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ED80 + M&S - 174kb ED80 + M&S + 2x Barlow (mosaic of 6 frames) - 630kb LX10 + M&S (mosaic of 15 frames) - 1.5Mb  

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Last updated: 07-Nov-11

 

Copyrights to all content from the webpages hosted here belongs to Jim Thompson. Nov. 2009.