At 7:15 p.m. MST on the evening of March 16, longtime Astronomy magazine contributor Chris Schur obtained a more close-up image of Comet PANSTARRS than we've been receiving. He attached his Canon XTi DSLR to a 3.2-inch Zeiss apochromatic refractor at f/4.6. He set the ISO to 200 and took a 5-minute exposure from his home in Payson, Arizona. The comet still had a total integrated magnitude of 1.5. As a comparison, the two brightest stars in the image (to the upper right) shine at magnitude 6.3.
Chris Schur