Movement of Galilean Satellites for 9.5 hours


Date & Time: Dec 9 2000, from 18:45 to 28:30, 2sec. exposed every 15 minutes
Optical: TAKAHASHI 12.5cm(4.9") fluorite refractor, afocal method with LV12mm eyepiece
Synthesized focal length f=1585mm (equivalent f=8715mm in 35mm film format)
Auto-guided with GOTO MX-II Equatorial
Digital Camera: OLYMPUS C-2020Z
Location: Ooizumi vil., Yamanashi pref.

Camera Settings: Mode.....SHQ (1600×1200, high-quality JPEG format)
Lens.....f=19.1mm (equivalent f=105mm in 35mm film format), Stop: F2.8
CCD sensitivity.....ISO100, White Balance.....Auto


This GIF animation consists of 40 shots of Galilean Satellites for 9.5 hours taken every 15 minutes.
You can observe the Galilean Satellites easily only with small telescopes, following up of their movements is one of most suitable theme for beginners. This animation shows you the second satellite of Europa is hidden behind the Jupiter and appear from the opposite edge. And as you can see, some last scenes look poor quality due to bad seeing because the altitude of Jupiter became very low.


Jupiter & Galilean Satellites
Saturn images in season of 2025

Copyright(c) 2000 by Naoyuki Kurita, All rights reserved.
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