|
nobody seems to be in a hurry to offer any opinions, so I thought I'd
jump in. Firstly, I know nothing about CCD cameras, being a film man
from way back, but some things seem obvious in your post. Firstly,
your DSLR colour images are sharper than the monochrome ones, so
maybe something is slightly awry with your CCD optical train, spacing
of components or something. I find A Bahtinov mask the most
convenient, cheap, and quick way of focusing. Secondly, a barlow
will soften the image a little, or quite a lot, depending on it's quality.
Thirdly, the images taken at lower magnification are sharper. To Take sharp pics at 468x with any scope is only possible when the atmosphere
permits it, which is not that often. Many quality planetary images are
taken with longer focal length scopes which removes the need for a
barlow. I don't know if any of this helped.
raymo
|