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Old 27-10-2006, 06:57 PM
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strongmanmike (Michael)
Highest Observatory in Oz

strongmanmike is offline
 
Join Date: May 2006
Location: Canberra
Posts: 17,152
Quote:
Originally Posted by Dennis
Hi Mike

Wow - that is an excellent image at 200mm F4. I'm really surprised that stopping the lens down only by a single stop has produced such tight, round stars right to the edge. Is this a modern era digital lens, or an older 35mm SLR lens?

Cheers

Dennis
Hi Dennis

The lens was purchased in 1985 but is a genuine Pentax 200mm SMC lens. It wouldn't have ED glass so there is a bit of Chromatic abberation. The chip in my SXV-H9 is pretty small so I was confident there would be no edge distortion. My intention is to use for B&W and Halpha imaging.

Cheers

Mike
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