その他惑星 ALPO-Japan Latest
ISS OBSERVATIONS Image 2010/08/14(UT)
Ralf Vandebergh(250mm Newton)|
Showed are 2 frames out of a favorable pass on Aug 14 during the
current morning-visibility period. It's interesting to see the
minor changes of the detail by the seeing, although the
conditions were quite good. This is a great illustration
of my general argument that stacking satellite images
must be considered with care. As we never have many frames
to stack, due to the fast movement and rapidly changing
observing angle of the objects, the obtained average could
be a more blurred result then one single frame provides.
Only in real exellent conditions, stacking satellite
images starts to show gain.
Imagery: manually tracked 10inch Newtonian @0.25''/p
in quite steady conditions (but not excellent).
[Ralf Vandebergh:Neighbourhood of Maastricht Netherlands]