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Yours truly

A  New  Horse Head  Nebula

This is a single 60 minute exposure on Ektachrome 200 with a one-stop processing push. The scope is the Ritchey-Chretien 12.5 inch f9 (focal length 2850 mm), no light pollution filters, on an A-P 1200 GTO mount. I used my ST-4 with a Lumicon off-axis guider and got good tracking (errors in the A3-A5 range) considering the focal length. The sky appeared quite clear although it fogged over one hour after this exposure was completed. The processed slide is quite grainy and I used PhotoShop's blur to reduce the grain. The image above represents the full 35 mm frame, scanned at 2700 ppi on a Polaroid 35+.