(1620)Geographos
2019/10/10T18:30:02/18:52:12(+30sec)までの30秒間露光20枚を合成
露光時間：30秒*20=10分00秒 ISO3200 長時間ノイズリダクションをオン
Mewlon210FR/2050mm + LPS-P2 + 60D / EM200Temma2
StellaImage6.5で合成、レベル補正とリサイズ
2000*1500を切り取り、640*480にリサイズ
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(1620) Geographos
1620 Geographos (/d?i?o???raf?s/), provisional designation 1951 RA, is a highly elongated, stony asteroid, near-Earth object and potentially hazardous asteroid of the Apollo group, with a mean-diameter of approximately 2.5 km (1.6 mi). It was discovered on 14 September 1951, by astronomers Albert George Wilson and Rudolph Minkowski at the Palomar Observatory in California, United States.[3] The asteroid was named in honor of the National Geographic Society.[2]
Physical Parameter Table
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2019年10月10日 15.4等
