投稿

Detecting Crater O at Clavius

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July Moon day by day

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Apollo Landing Site 11 and 16 (Location finding)

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Atlair15 Jupiter ( late season ) under low Histgram

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Altair-15 ICE Moon (MA16.6)

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Diaphragm Discussion ( 9+inch vs 12inch )

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Focal Length for Moon shot by APS-C

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Moon on partial cloudy day

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Moon Shot on cloudy day (MA8.4)

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Diaphragm of SCT

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Moon Age 21.9 (MA21.9) by D=114mm Newton Ref

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Jupiter 4inch MV on May20th 20h 2017

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