Reply To: Impurities on the ccd sensor?

Forums General Discussion Impurities on the ccd sensor? Reply To: Impurities on the ccd sensor?

#628609
Dawson
Participant

It is dust and dirt in the optical path somewhere. Things directly on the sensor can appear nearly focussed, things on the lens of a refractor can appear grossly out of focus. These things look to be between the two. Are you using any filters near the sensor?