Having returned from TSP 2009, I'm excited to talk about things that other people have done or are doing. The above picture was captured at TSP by John Davis, a fellow imager in my astronomy club. He used a modified DSLR camera on an AstroTrac mount. But here's the neato part: he used two different lenses. Here's his explanation of how he did this:
I imaged Scorpius over 2 nights with my Canon XSI: one night with a 28mm to get the entire constellation and the next night with a 85mm focused on the Rho region. I then used RegiStar to create this 2 frame mosaic to bring out extra detail in the Rho region.
Here are the stats:
Canon XSI (Hutech Modded, IDAS filter)
Sigma 28mm f/4, ISO 1600
45 x 2 min
Canon XSI (Hutech Modded, IDAS filter)
Nikon 85mm f/4, ISO 1600
53 x 2 min
I used the AstroTrac for unguided tracking.
Amazing, huh? I think he did a stellar job on the processing.
Tomorrow I'll talk about a cool transit captured with photometry by another friend.
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