Celestial hemisphere:  Southern  ·  Constellation: Ophiuchus (Oph)  ·  Contains:  IC 4592  ·  IC 4604  ·  IC 4605  ·  M 4  ·  NGC 6121  ·  Part of the constellation Lupus (Lup)  ·  Part of the constellation Ophiuchus (Oph)  ·  Part of the constellation Scorpius (Sco)  ·  The star Al Niyat (σSco)  ·  The star Antares (αSco)  ·  The star Dschubba (δSco)  ·  The star Graffias (β1Sco)  ·  The star Sabik (ηOph)  ·  The star ηLup  ·  The star θOph  ·  The star πSco  ·  The star τSco  ·  The star υLib  ·  rho Oph nebula
Scorpius and Pipe Nebula - Antares M4 and Rho Ophiuchus, Lee, Chi-Hsiang
Scorpius and Pipe Nebula - Antares M4 and Rho Ophiuchus
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Scorpius and Pipe Nebula - Antares M4 and Rho Ophiuchus

Scorpius and Pipe Nebula - Antares M4 and Rho Ophiuchus, Lee, Chi-Hsiang
Scorpius and Pipe Nebula - Antares M4 and Rho Ophiuchus
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Scorpius and Pipe Nebula - Antares M4 and Rho Ophiuchus

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Description

星空調色盤及其周邊@2017.04.02 凌晨

攝於冷到靠右邊走的鳶峰

Canon 6D 改 + 24-70mm L/F4@70mm/F4.0

Vixen POLARIE Star Tracker星空雲台

ISO 1600 / 180s x3 + 120s x 43 / Dark x10 / Flat x10

DSS 3.3.4 + Camera Raw + Photoshop CC

24-70mm L/F4 這支的遮光罩前面放魚骨板,根本沒用,可能是與鏡頭距離不足,所以只好靠 Live View 肉眼對焦法了...

顯然極軸沒有對得很精準,所以 180s 版本放大看有明顯小拖線,後來就統統改成曝光 120s 了。

By the way, 電子極軸鏡的 Vixen POLARIE Star Tracker 轉接座已經入手,下次來試試精準對極軸!

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Scorpius and Pipe Nebula - Antares M4 and Rho Ophiuchus, Lee, Chi-Hsiang