土星 ALPO-Japan Latest
Saturn Image 2016/07/27(UT)
Paul G. Abel,Paul Maxson
Paul G. Abel(203mm reflector)|
Please find attached an observation of Saturn I made with Dr Hugh Sasse using the 508mm Planewave Dall-Kirkham telescope
at the University of Leicester observatory. Seeing was around AIV and we had to contend with some passing clouds.
Of course the low altitude meant that the finer features were somewhat obscured,the main points of note are:
A broad NEB,the northern edge being the best defined part of the belt. The belt appears to be quite broad
and blends into the general hue of the disk further north.A dark NTB,thin but well defined and greyish in colour was present.
Greenish tint present to the NPR. No sign of the polar hexagon. Indeed,I have used this telescope over the last few years
at high powers and in better seeing conditions,and although sometimes a dark polar cap can be viewed at x400 it never shows
any structure and I have never suspected the polar hexagon feature. I am now satisfied that it is beyond the range of the human visual system.
A-Ring greyish,and the B ring was bright and had a slight yellowish tint. When the planet was at higher altitudes the B ring is white
but when viewed low down seems to take on a yellowish colour. C-Ring dark grey. Cassini division visible but not completely jet black.
[Paul G. Abel:Leicester:United Kingdom]
Tadashi Horiuchi(300mm Newtonian)|
《京都府宇治市、堀内直》[T.Horiuchi: Uji- City Kyoto Japan]
Paul Maxson(250mm DK or 315mm DK)|
Really good seeing.
[ Paul Maxson:Surprise,Arizona,United States]