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Big Dipper 북두칠성 Big Dipper. 북두칠성. Large photos: https://cometsky.com/astrophotos/big_dipper_20250323_large_bsyeom.jpghttps://cometsky.com/astrophotos/big_dipper_20250323_large_ex_bsyeom.jpghttps://cometsky.com/astrophotos/big_dipper_20250323_web_bsyeom.jpghttps://cometsky.com/astrophotos/big_dipper_20250323_web_ex_bsyeom.jpg 염범석. Bum-Suk Yeom. Taken by Bum-Suk Yeom ( https://www.cometsky.com ) on Mar.. 2025. 5. 7.
Sagittarius, Scorpius, and the Summer Milky Way 궁수자리, 전갈자리, 그리고 여름철 은하수 Sagittarius, Scorpius, and the Summer Milky Way. 궁수자리, 전갈자리, 그리고 여름철 은하수. Large photos: https://cometsky.com/astrophotos/sgr_sco_20250501_large_new_bsyeom.jpghttps://cometsky.com/astrophotos/sgr_sco_20250501_web_new_bsyeom.jpg염범석. Bum-Suk Yeom. ​ Taken by Bum-Suk Yeom ( https://www.cometsky.com ) on April 30, 2025 UTC @ Jangsu, South Korea. Details: 18:37 UTC, Sigma Art 40mm F1.. 2025. 5. 6.
Naked-Eye Giant Sunspot 맨눈으로 관측 가능한 큰 태양 흑점 Naked-Eye Giant Sunspot using Solar Glasses (or Solar Filter). 태양 안경을 사용하여 맨눈으로 관측 가능한 큰 태양 흑점. Large photo: https://cometsky.com/astronews/sun_20250503_sdo_bsyeom.jpghttps://cometsky.com/astronews/sun_20250503_sdo_en_bsyeom.jpg A giant sunspot, visible to the naked eye, is crossing the sun's disk. I could see the sunspot clearly with the solar glasses. This sunspot is eight times.. 2025. 5. 3.
Naked-Eye Giant Sunspot using Solar Glasses (or Solar Filter) 태양 안경을 사용하여 맨눈으로 관측 가능한 큰 태양 흑점 Naked-Eye Giant Sunspot using Solar Glasses (or Solar Filter). 태양 안경을 사용하여 맨눈으로 관측 가능한 큰 태양 흑점. Large photo: https://cometsky.com/astronews/sun_20250502_sdo_bsyeom.jpgA giant sunspot, visible to the naked eye, is crossing the sun's disk. This sunspot is six times the size of Earth. (Caution) You must use Solar glasses or Solar filters to protect your eyes. 육안으로 볼 수 있는 거대한 흑점이.. 2025. 5. 2.
Celestial objects to observe in May 2025 2025년 5월의 천체 관측 대상들 Celestial objects to observe in May 2025. 2025년 5월의 천체 관측 대상들. Large photo: https://cometsky.com/astronews/2025_05_may_skyobject_large_bsyeom.jpgBum-Suk Yeom. 염범석. 2025. 4. 30.
Light Curve of Comet C/2025 F2 (SWAN) C/2025 F2 (스완) 혜성의 광도 곡선 Light Curve of Comet C/2025 F2 (SWAN). C/2025 F2 (스완) 혜성의 광도 곡선. C/2025 F2 혜성은 붕괴된 것으로 예상하며, 혜성의 밝기는 점차 어두워져가고 있는 것 같다. Comet C/2025 F2 (SWAN) appears to be disintegrating and becoming increasingly dimmer. Large image: https://cometsky.com/astronews/c2025f2_lc_250422_new_bsyeom.jpg Image credit: COBS Comet Observation Database, Crni Vrh observatory, Bum-Suk Yeom (염범석). 2025. 4. 22.
Messier 11 (The Wild Duck Cluster) M11 (야생오리 성단) Messier 11 (The Wild Duck Cluster). M11 (야생오리 성단). 2025. 4. 10. 18:37 UT (4. 11. 03:37 KST). Total exposure time : 15sec x 100 = 25 min. https://cometsky.com/astrophotos/m11_20250410_bsyeom.jpgTaken by Bum-Suk Yeom (염범석). 2025. 4. 10. 18:37 UT, Celestron 8” Rowe-Ackermann Schmidt Astrograph (RASA 8, D=200mm, f=400mm, f/2), iOptron HAE43 Harmonic Mount, ZWO ASI533MC Pro Camera, Sightr.. 2025. 4. 21.
SOLAR MINIMUM (2019) & SOLAR MAXIMUM (2024) 태양 활동 극소기(2019년)와 극대기(2024년) SOLAR MINIMUM (2019) & SOLAR MAXIMUM (2024).   태양 활동 극소기(2019년)와 극대기(2024년).     Large image: http://cometsky.com/astronews/solar_min_max_2019_2024_bsyeom.jpg  https://www.swpc.noaa.gov/products/solar-cycle-progression?fbclid=IwY2xjawJZ6illeHRuA2FlbQIxMAABHWpdRV7R93QVftTd6f1PX7Ewa-K1ulFGExCJNZezodx1idacFdpTXTL9aQ_aem_aClNaTNHRMeoomt-FxcfqQ Taken by Bum-Suk Yeom. 염범석. Solar activity appears to be.. 2025. 4. 3.
Spring constellations 봄철의 주요 별자리 Spring constellations. 봄철의 주요 별자리.   염범석. Bum-Suk Yeom.   Large size:  http://cometsky.com/astronews/spring_skymap_bw_bsyeom.jpg 2025. 4. 2.
Celestial objects to observe in April 2025 2025년 4월의 천체 관측 대상들 Celestial objects to observe in April 2025.     2025년 4월의 천체 관측 대상들.        Large photo:     https://cometsky.com/astronews/2025_04_apr_skyobject_large_bsyeom.jpg  Bum-Suk Yeom. 염범석. 2025. 4. 2.
LIVE: Partial Solar Eclipse - March 29, 2025 2025년 3월 29일 부분일식 생중계 2025년 3월 29일 부분일식 생중계. LIVE: Partial Solar Eclipse - March 29, 2025. 1. Time and Date    https://www.youtube.com/watch?v=j3T20T8k2h0     https://www.timeanddate.com/live/eclipse-solar-2025-march-292. Royal Observatory Greenwich    https://www.youtube.com/watch?v=NwOL-q1FuVM + 식의 진행 시간 (지구 전체 기준)    - 부분식 시작 : 3월 29일 17:50 한국시간)   - 식의 최대 : 3월 29일 19:47 한국시간)   - 부분식 종료 : 3월 29일 21:43 한국시간) + Whe.. 2025. 3. 29.
Winter constellations and the winter Milky Way 겨울철 별자리들과 겨울철 은하수 Winter constellations and the winter Milky Way rising above Jirisan Chotdaebong. 지리산 촛대봉 (1,703m) 위로 떠오르는 겨울철 별자리들과 겨울철 은하수. Large photos:  https://cometsky.com/astrophotos/wint_con_mw_20240930_med_bsyeom.jpg염범석. Bum-Suk Yeom.        ​  Winter constellations rising above Jirisan Chotdaebong (1,703m) in the eastern sky. The autumn constellation Perseus is at the top of the photo, and the winter c.. 2025. 3. 23.

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