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
