Quote:
Originally Posted by PRejto
Hi Ray,
I'll think ore about the atmospheric turbulence idea. If star jumping around really isn't random then my idea would fail. How would one verify such a thing?
Peter
|
Your mount is good enough that tracking a target low down in the west and then comparing with low down in the north should show if there actually is a turbulence pattern difference - I think that vertical turbulent flow should be aligned predominantly RA when west and DEC when north.
I have certainly seen seeing blur that distorts the image more strongly in the turbulent flow direction when doing planetary imaging, but couldn't find any references to suggest that the same applies to DSO imaging - come to think of it though, this might just possibly explain some odd star elongation that I sometimes get - might do some testing
.