M1及不明物體
M1及不明物體
昨天攞咗一個去年試機拍攝的影像, 跟之前拍的另外一張比較, 發覺多咗粒星.
位置是RA: 05h 35m Dec: +22°04' (2000)
我在電子星圖找, 卻找不到它是甚麼物體, 由於它在黃道面附近, 相信它是一粒約10.5等的小行星, 另一個可能性是新星.
HD244988 9.69等
HD245010 10.31等
GSC 1309:1609 11.28等
最近磅的, 可能是10.6等的19 Fortuna小行星, 但跟據電子星圖的計算, 19 Fortuna的位置不是exactly在這裡而是在RA: 05h 37m Dec: +22°07' (2000), 有可能是星圖的軌道計算不夠準確.
唔知有無同好可以印證一吓這個object?
右面張相的色調唔啱, 遲d要再執過.
拍攝資料:
左: 20091023 18:09-18:19UT, ε-180ED, QHY8 CCD, 600s, EM200, 60mm f/8.3導星鏡 + QHY5 + PHD自動追蹤, 氣温約21度, 相對濕度約80%, 攝於西貢.
右: 20090101 14:44-15:35UT, CN212 @f/3.9, EOS40D改, 300s x 10 @ISO800, EM200, Mini-Borg 50 + QHY5 + PHD 自動追蹤, 氣温約10度, 攝於西貢.
位置是RA: 05h 35m Dec: +22°04' (2000)
我在電子星圖找, 卻找不到它是甚麼物體, 由於它在黃道面附近, 相信它是一粒約10.5等的小行星, 另一個可能性是新星.
HD244988 9.69等
HD245010 10.31等
GSC 1309:1609 11.28等
最近磅的, 可能是10.6等的19 Fortuna小行星, 但跟據電子星圖的計算, 19 Fortuna的位置不是exactly在這裡而是在RA: 05h 37m Dec: +22°07' (2000), 有可能是星圖的軌道計算不夠準確.
唔知有無同好可以印證一吓這個object?
右面張相的色調唔啱, 遲d要再執過.
拍攝資料:
左: 20091023 18:09-18:19UT, ε-180ED, QHY8 CCD, 600s, EM200, 60mm f/8.3導星鏡 + QHY5 + PHD自動追蹤, 氣温約21度, 相對濕度約80%, 攝於西貢.
右: 20090101 14:44-15:35UT, CN212 @f/3.9, EOS40D改, 300s x 10 @ISO800, EM200, Mini-Borg 50 + QHY5 + PHD 自動追蹤, 氣温約10度, 攝於西貢.
- universe24
- 中子星
- 文章: 1930
- 註冊時間: 週五 11 7月, 2003 20:11
- 來自: Malaysia
Quite sure that the object is 19 Fortuna, this can be checked with the online program at the IAU Minor Planet Center:
http://scully.cfa.harvard.edu/~cgi/CheckMP
The following figure shows the result generated. The position of 19 Fortuna at that time was RA 5 hr 34 m 58.3 s and Decl 22 04 38. The RA matches exactly, the Decl is only 38 second off.
http://scully.cfa.harvard.edu/~cgi/CheckMP
The following figure shows the result generated. The position of 19 Fortuna at that time was RA 5 hr 34 m 58.3 s and Decl 22 04 38. The RA matches exactly, the Decl is only 38 second off.
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Thanks Dr. Tong. I bookmarked it.昇仔 寫:Quite sure that the object is 19 Fortuna, this can be checked with the online program at the IAU Minor Planet Center:
http://scully.cfa.harvard.edu/~cgi/CheckMP
The following figure shows the result generated. The position of 19 Fortuna at that time was RA 5 hr 34 m 58.3 s and Decl 22 04 38. The RA matches exactly, the Decl is only 38 second off.
誰在線上
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