Quote:
Originally Posted by SimmoW
Lovely Greg! That Southern Cross area shot is very nice.
Stay tuned for some of my own widefield shots taken with the A7s, I finally worked out a convenient way to mount the cam inverted beneath the scope after all this time, loving the 85mm and 200mm f/l's
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Thanks Simon. I have been reading threads about the star eating spatial filtering that Sony uses on its RAWs (like Nikon uses but they toned it down so doesn't eat stars anymore). It kicks in when you use bulb. These images were 30 seconds so no star eater. The earlier images I posted were 60 seconds so they would have been affected. I think it may be an overblown issue but worth checking. I saw one image online with dark holes in the centre of stars.
I use a Losmandy D mount clamping bracket to mount my camera and also on the dovetail that sticks out the front of a scope. Or on top if the scope has a rail on top (both mine do). You can slide it that way which you need to do it using widefield lenses otherwise the scope is shown in the image!
Greg.
