Measures of the Galilean satellites of Jupiter
Abstract
Plates, which were measured, were taken with the 40 cm Cassegrain telescope (f = 640 cm) of Aarne Karjalainen Observatory. The geographical coordinates of the observing site are lambda = 1 hr 43 mins 35 secs (25 degs 53 mins 50 secs), phi = 65 degs 05 mins 09 secs. The exposure times were 1 to 5 secs. During this time Io moved less than 0.030 secs, Europa less than 0.024 secs, Ganymede less than 0.020 secs, and Callisto less than 0.014 secs. Relative positions of the satellites were measured with Zeiss MKS 1,000 measuring component system. For each exposure, the coordinates of the satellites in a system are given. The central point of Jupiter defines the origin and x-axis is approximately parallel to the Jupiter's equator. The x-axis points to the east and the y-axis to the north.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- 1976
- Bibcode:
- 1976STIN...7623133L
- Keywords:
-
- Europa;
- Io;
- Jupiter (Planet);
- Natural Satellites;
- Cassegrain Optics;
- Coordinates;
- Earth (Planet);
- Photographic Measurement;
- Stars;
- Lunar and Planetary Exploration