Observation were done using 12" Dobson with yellow, orange and grey filter for Jupiter. In all cases the filters did enhance the contrast. Three belts could be observed, aswell some darker spots in the northern belt. Callisto was on the west side of Jupiter, all others (Europa, Io and Ganymedes) on the east side.
I did try out the use of yellow, orange, grey and OIII filter for Saturnus but I can not make any conclusion at this stage. With Jupiter I was certain that the use filters can make a difference. I'm not sure for Saturnus.
No real structure could be observed on Saturnus. Probably because Saturnus was only 20° above the horizon. Three moons of Saturnus are observed, east of Saturnus : Rhea, Titan and Japetus.
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| Filters provide during test by Guido Gubbels |
