大溪天文台觀測日誌 TYGA TW大溪天文台 TYGA TW(AAVSO)觀測全天長周期脈動變星 LPV (Long Period Variable star)2023年11月17日 - 18日 大溪 晴朗/多雲 風速:1-2級
溫度:15.1 -22.4度c 濕度:57- 65% SQM :18.69
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:15顆 CCD:12顆 目測:03顆 天鵝座 GCVS Cyg 白羊座 Ari
老貓物語:
*.這是大溪天文台少數下半夜觀測變星. 因為下半夜的視狀(seeing field) 接近 1.1 arc sec. SQM=18.87. 類似在6-800公尺標高的夜空狀態 . 在做Photometry的測量,亮度的精確度達到+/-0.02mag.(一般是+/-0.081mag)
Observations submitted since last login:
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Name JD CalendarDate Mag A Filter B Notes
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1 R CYG 2460266.02292 2023 Nov 17.5229 15.0 Johnson V ensemble ASTROART5.0 N
2 S CYG 2460266.03333 2023 Nov 17.5333 10.4 Johnson V ensemble ASTROART5.0 N
3 T CYG 2460266.03681 2023 Nov 17.5368 4.9 4.5 5.0 THESKY 6.0 N 8X30 Binoculars
4 U CYG 2460266.03958 2023 Nov 17.5396 8.9 Johnson V ensemble ASTROART5.0 N
5 V CYG 2460266.04097 2023 Nov 17.541 11.6 Johnson V ensemble ASTROART5.0 N
6 W CYG 2460266.04792 2023 Nov 17.5479 6.2 6.1 5.0 THESKY 6.0 N 8X30 Binoculars
7 X CYG 2460266.04236 2023 Nov 17.5424 7.1 Johnson V ensemble ASTROART5.0 N
8 Y CYG 2460266.04653 2023 Nov 17.5465 7.6 Johnson V ensemble ASTROART5.0 N
9 Z CYG 2460266.05 2023 Nov 17.55 12.2 Johnson V ensemble ASTROART5.0 N
10 R ARI 2460266.17153 2023 Nov 17.6715 11.6 Johnson V ensemble ASTROART5.0 N
11 S ARI 2460266.17708 2023 Nov 17.6771 15.0 Johnson V ensemble ASTROART5.0 N
12 T ARI 2460266.18056 2023 Nov 17.6806 8.6 Johnson V ensemble ASTROART5.0 N
13 U ARI 2460266.18472 2023 Nov 17.6847 13.0 Johnson V ensemble ASTROART5.0 N
14 W ARI 2460266.19028 2023 Nov 17.6903 14.7 Johnson V ensemble ASTROART5.0 N
15 P CYG 2460266.01458 2023 Nov 17.5146 4.8 4.6 5.0 THESKY 6.0 N 8X30 Binoculars
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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 11/17取樣 :16.02mag 11/18 取樣 :15.21mag ( JOHNSON UVBR / CHROMA V -Bessell V band filter )
image field: 26'x19' (ST-2000XM) 41'x34' (STL11K) 36'X24' (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
*.天鵝座P星 ,是天鵝座的一顆變星。距離地球約5,300光年,是一顆光譜類型為B1-2 Ia-0ep的超巨發光藍色變星(LBV),是銀河系中明亮的恆星之一。其光譜最大特色就是氫和氦氣在高溫下,呈現明亮的發射線.在H-alpha 的Balmer 可見到杜普勒效應的黑色吸收線(藍位移)和明亮發射線(紅位移).
https://familystar.org.tw/index.php?option=com_smf&Itemid=45&topic=25209.975曹大貓咪 2023 1129 台北市