2025년 페르세우스자리 유성우 (Perseids) 예측 2025 Perseids prediction 2025년 페르세우스자리 유성우 (Perseids) 예측. 2025 Perseids prediction. https://cometsky.com/astronews/2025_perseids_forecast_bsyeom.jpgcf. 2021 Perseids photo. 2021년 페르세우스자리 유성우 사진. https://cometsky.tistory.com/1267http://cometsky.com/astrophotos/2021_perseids_20210813_med_rot_bsyeom.jpg - 활동 기간 : 7월 17일 ~ 8월 29일. - 올해 극대기 : 8월 12일 22:15 (한국시간, IMO 자료 기준). 8월 13일 04:47 (한국.. 2025. 7. 28. Celestial objects to observe in July 2025 2025년 7월의 천체 관측 대상들 Celestial objects to observe in July 2025. 2025년 7월의 천체 관측 대상들. Large photo: https://cometsky.com/astronews/2025_07_july_skyobject_large_bsyeom.jpgBum-Suk Yeom. 염범석. 2025. 7. 7. Nightsky brightness measured with SQM-L in the Govi Desert 고비 사막에서 SQM-L로 측정한 밤하늘 밝기 Night sky brightness measured with SQM-L (Sky Quality Meter with Lens) equipment in the Govi Desert. Because the night sky was cloudy, the measurement was darker than the actual brightness, 22.14 mag/arcsec^2, but when the weather was clear a few days later, the measurement was approximately 21.7 mag/arcsec^2. I think this value is probably correct. Based on the Bottle Scale, Bottle Class 1 corr.. 2025. 7. 3. 이전 1 다음
