This is my first try at Wide field imaging (comparing to the focal length I usually use) in San Bruno – on 7/4/2010! Transparency was 3/6 (magnitude 3 stars seen at best) and M8 was quite low (below 30 deg.) so imaging was a challenge! But what can be done in a highly light polluted environment with a fast optical system, the CLS CCD anti pollution filter, and digital processing still surprises me…
Mount: Astrotrack travel system
Camera: Canon XTi with Canon 200mm prime lens f/d 2.8 teleobjective open at f/d 3.5 – at Iso 400
30 exposure of 90 seconds with Astronomik CLS CCD clip filter
I am still experimenting with the Astrotrack – and can improve tracking accuracy. Also unfortunately the 200mm Lens is somewhat out of collimation (in the process of returning it). But given the conditions I am happy with the result. Hoping to use these gears on a trip in New Mexico in September…
Astrophotography in Urban Environment 