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This evening the eastern sky was clear for a near/far Jupiter Luner DSLR camera trial and a near/far Jupiter Lunar using a 4x40 scoped Plath as a check.

10MP DSLR 50mm lens 1/200 sec. ISO 1600 F4 infinite focus
9/23/2010 UT 3:20:40 Lat.34° 10.4'N Lon.119° 13.8'W
Near Limb 5°31.4' clearing 45.3' longitude (-1.5')
Far Limb 6° 3.4' clearing 15.7' longitude ( 0.5')
cleared by Reed online program

Plath 4x40 scope
9/23/2010 UT 2:53:16 Lat.34° 10.4'N Lon.119° 13.8'W
Near Limb 5° 32.4' clearing 2.2' longitude (-0.1')
9/23/2010 UT 3:35:6
Far Limb 6° 3.0' clearing 7.6' longitude (-0.3')
cleared by Reed online program

The sextant is still the champion instrument when it comes to taking Lunars but the DSLR camera with a 50mm lens put in a respectable showing.

Greg Rudzinski
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