Quote:
Originally Posted by OzEclipse
Hi Tim,
Very nice image.
There are two dark marks on the image, one midway between NGC 1055 and M77 and the other just off the midpoint between NGC 1055 and NGC 1032 from frost/stains on the sensor window or are they something inherent in the sensor? How difficult is is to clean the sensor window without leaving more marks? What do you use?
cheers
Joe
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I think they are dust motes on the inside surface of the objective cell. V difficult to remove without disassembly of the scope. I clean all the other surfaces with isopropyl alcohol and a soft lint-free cloth
Tim
Tim