[Dennis]

Hi

This is my first image through my new William Optics 80mm f7 triplet ED refractor. It was taken from light polluted Brisbane. Exposure details are:

5 images
30 secs exp (auto-dark subtracted in-camera)
Pentax *istDS DSLR

The original image has been cropped in the centre (appox ½ size) and resampled down to 800x600

Can anyone explain why there are red haloes around some of the field stars? If this was chromatic aberration, I would have expected blue haloes? Or, have I got a duff objective? The inside and outside of focus images look textbook.

Thanks!

Dennis