Thanks Martin.
I can email you a luminance.
I also got another 2 hours or so last night under good conditions.
The scope is good. Flats are more important on this scope than on others for some reason. On brighter objects its not a problem but on some dimmer ones it is. Part of that is it will obviously perform best under very dark skies. My skies at home at quite dark to the west and poor to the east and resonable to the south. Certainly star sizes are well corrected over the field.
Greg.
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