Quote:
Originally Posted by alistairsam
Thats superb Gordon, any idea why the halo around the two bright stars are in different directions and off-centre? are they due to reflections?
Cheers
Alistair
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Hi Alistair
The halos are due to some reflection in the optical train and could be due to the telescope, filters or the camera window, as the bright stars go towards the edges of the field so the halos go off centre in the same direction as seen here, the seeing wasn't good when I took a lot of the data and I've found that halos always tend to be worse in these circumstances in the same way as you often see a faint halo round the moon when there is some thin mist in the sky, I could process them out or minimise them but I didn't want it to affect the rest of the image
Best wishes
Gordon
