My 8300m has performed nicely Until this year when a few things have reared their ugly head. 1. filters are not centering over the chip. Have run the filter wheel exercise but problem persists. 2. Have been getting strong gradients somewhat diagonally which flats don’t eliminate. Never had this issue before this past summer. 3. Have noticed a strong sickle shaped abboration in one corner of my flat frames. The silke shape shows up light. Would love to provide frames but my laptop hard drive died and hoping to make a data recovery this week. in the meantime, if anybody has thoughts I would love to hear from you. Dave
Sounds like your filter wheel may need service. That would cause all of the symptoms you report. Contact bill@sbig.com for service.
