ISS
- Date Posted: March 25, 2013
- Resolutions: 673x570 , 673x570 , 200x169
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We had a favorable pass of the International Space Station, soaring nearly overhead for locations in southern New England during the early dawn of St. Patrick's Day. These shots were done using a Nikon D5100 camera body attached prime focus to my 12.5" telescope, using the telescope as a 1600mm telephoto lens. These are single shots, not video frames. My telescope does not track the space station, so in order to capture images of it I aim my telescope just ahead of the moving space station, and wait for it to come into view of my Telrad finder. Keep in mind that the space station is only in the telescope's view for less than a second, so you have to be ready. Just as the ISS comes into view of the center bulls eye of my Telrad finder, I tripped the camera's shutter, which is set to continuous exposures, taking approximately 5 frames. I then repositioned the telescope again, just ahead of the ISS, and repeated the process. In all I got about 20 shots in less than a minutes worth of opportunity as the station flew overhead. Exposures were 1/2,000 second at ISO 1,250. The best shots were then cropped, and minimal processing applied to sharpen slightly and boost contrast some. Frankly, I was surprised by the level of detail I was able to capture. It's actually possible to identify many of the space station's components! Getting photos like this is a lot easier than you might think, so if you have a DSLR, give it a try. Bob Horton
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- Robert Horton
- January 19, 2022