
The 0III taken 7.11.08 with a high half Moon and haze. Guiding was terrible, perhaps the old Meade is getting sick.
I took the 0III with the camera 90° to the Ha so could only use the central portion.
4x900sec exposure using the M25C and 80ED, and a Meade 0III filter.
I'll leave this on as a reminder not to do it this way, but the 0III frames, taken through a Meade 0III filter have degraded the picture as a whole, rather than improved it.
The reason seems to be that the Meade filter, bought as a visual one, lets the infra-red through and more of that comes through than the 0III, adding to the H-alpha and bringing more noise with it.