The sky was clear, so I was able to get a couple more test images with the Hoya Sparkle 6x filter. Both were obtained with an Olympus E-M5iii camera and Sigma 30mm f/1.4 lens: 15-sec exposures (on a tracking mount) at ISO 1600. Downtown Santa Fe is not the ideal location for doing wide-angle astrophotography. The sky brightness measured after taking these two shots was sqml=19.42, more than six times brighter than a mediocre dark sky in Creede. You can see the murk of city lights in the lower part of the Orion image. On the other hand, the temperature in Creede was 6° F and falling vs 31° F here.
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| Orion |
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The Hyades and the Pleiades.
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