Quote:
Originally Posted by Mickoid
While Carina seems to be in vogue at the moment, here's a widefield view to add to the collection. I took this last night from my Bortle 6 suburban backyard with a 40 year old SUN 200mm lens. I made an external aperture of around f 5.6 to fit on the front of the lens (the internal aperture is stuck wide open). Tried to get as much colour as I could from the light polluted skies and so combined two sets of data, some Triband filtered and UVIR cut filter shots to help achieve this. The stars have some fringing if you look closely but the overall picture came out OK. Taken with a modded Canon 550d, unguided on an old HEQ5 non-GOTO mount.
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Those are impressive stars with an older lens - especially a third party one. What sun lens is it exactly? I have a Sun 70-210mm macro zoom for OM mount and would be keen to try it out. Might even try out the OM 300mm f/4.5 I have.
I do notice that with a lot of older lenses at all focal lengths that they are as sharp as newer ones when stopped down, but have a lot more purple fringing. I guess that was difficult to control cheaply back in the day.