Celestron 14" SCT F/3.6 (f 1278mm 1.1 arcsec/pixel resolution) +SBIG ST-10XME 自由追蹤 (POLEMASTER 2017 0805 校對) Showa 20E kai +NS5000 for SHOWA20E(測試中).+TheSky GOTO system.
觀測變星:03顆 CCD:03顆 目測:0顆 北冕座 GCVS Crb
Observations submitted since last login: ---------------------------------------------------------------------------------------------------------------------------- Name JD CalendarDate Mag Filter Chart ---------------------------------------------------------------------------------------------------------------------------- 1 T CRB 2460405.18194 2024 Apr 4.6819 10.1 Johnson V ensemble ASTROART5.0 N 2 T CRB 2460405.18472 2024 Apr 4.6847 11.6 Johnson B ensemble ASTROART5.0 N 3 T CRB 2460405.19097 2024 Apr 4.691 9.1 Cousins R ensemble ASTROART5.0 N 4 R CRB 2460405.19444 2024 Apr 4.6944 6.2 Johnson V ensemble ASTROART5.0 N 5 S CRB 2460405.19653 2024 Apr 4.6965 12.6 Johnson V ensemble ASTROART5.0 N 6 T ORI 2460404.97222 2024 Apr 4.4722 10.4 Johnson V ensemble ASTROART5.0 N 7 T CRB 2460429.16806 2024 Apr 28.6681 9.8 Johnson V ensemble ASTROART5.0 N 8 T CRB 2460429.17222 2024 Apr 28.6722 11.0 Johnson B ensemble ASTROART5.0 N 9 T CRB 2460429.18056 2024 Apr 28.6806 9.6 Cousins R ensemble ASTROART5.0 N ------------------------------------------------------------------------------------------------------------------------------ Celestron 14" SCT +Sbig ST-10XME 直焦點 溫度0度C 曝光 40-60秒 JOHNSON V,B,R FILTER / CHROMA V -Bessell AAVSO Observatory Code : TYGA TW (大溪天文台 台灣) 當晚極限星等 0404取樣 none ( JOHNSON UVBR / CHROMA V -Bessell V band filter ) image field: 26'x19' (ST-2000XM) 41'x34' (STL11K) 26'X21' (ST-10) 大溪及世界各地業餘觀測者的觀測資料及曲線可參考 http://www.aavso.org/data/lcg *.Vmag=photometry RADEC=astrometry by Astroart5.0 TYGA TW : AAVSO global obse cod
圖1,2,3: T Crb 變星 大溪天文台0404 2024 使用三色測光 (All astrometry and photometry bt Astroart 5.0 version)
Observations submitted since last login: 2024 0404: B-V=+1.6 1 T CRB 2024 Apr 4.6819 10.1mag Johnson V 2 T CRB 2024 Apr 4.6847 11.6mag Johnson B 3 T CRB 2024 Apr 4.691 9.1mag Cousins R
2024 0412 B-V=+1.2 *Suspected to have a tendency to slowly brightening! 1 T CRB 2024 Apr 12.6743 9.9mag Johnson V 2 T CRB 2024 Apr 12.6785 11.1mag Johnson B 3 T CRB 2024 Apr 12.6771 9.7mag Cousins R
2024 0429: B-V=+1.2 4 T CRB 2024 Apr 28.6681 9.8mag Johnson V 8 T CRB 2024 Apr 28.6722 11.0mag Johnson B 9 T CRB 2024 Apr 28.6806 9.6mag Cousins R
老貓物語: *.北冕座的T變星本身的色光觀測,重點是以V和B band的色光變化為主.如果在B色光的的亮度(B-V指數變大)有些變化(特別是變暗週期!),這和變星中的吸積塵埃吸收的增加是一致(increasing dust absorption),對於最近發生塵埃形成的離散物質拋射的情況(很像R CrB恆星)。所以這次觀測我加了 R Crb的變星觀測(很可惜,時間上在觀測B和R色光測光時,因為雲層干擾. 無法得到穩定星光影像.所以放棄觀測數據.)