Forums Telescopes Coranado PST help PST

David Arditti

So it used to work and now it doesn’t, you are saying? There is a clear difference between the images it gave more than 18 months ago and now, even allowing for the decline in sunspots?

All solar equipment does degrade with time, and always needs servicing eventually. If there’s no detail, then one of the filters inside is not performing correctly, and likely needs replacing, which can only be done by Coronado.