Selection of Philippine avian wildlife all captured in habitat, plus nature and miscellaneous images.

ISS over Manila (April 18, 2011)

The International Space Station was scheduled to pass directly over Manila this April 18th, with a magnitude of -3.8 and an altitude of about 348 km.

With the skies over our islands virtually cloudless the last few days and nights, there was a good chance of clear seeing on this pass, especially since the space bird would do its fly-by at dawn when the atmosphere over our urban area is not as turbulent as at other times of the day.  

I was encouraged to get out of bed a couple of hours before sunrise to set up my gear in my backyard. In between puffs of smoke from my favorite mentholated lung-buster, I gazed at the stars in the dawn sky and I was happy to note that the seeing conditions were quite decent.

I opted to stack 5.6x worth of teleconverters on my supersharp 400 2.8 IS for a focal length of about 2263 mm. This should make the tiny subject a bit larger in the 7D’s frame. I pre-focused manually on the setting moon minutes before the pass. Acquiring the streaking ISS through such a narrow angle of view was tough, but I eventually caught the subject in the viewfinder a few seconds after it appeared above the NNW skyline.

This frame was the sharpest among 121 shots I took. 🙂

ISS Over Manila - April 18, 2011 (04:47:48 local time), max. mag. - 3.8, min. dist. @ 348 km, Canon 7D + EF 400 2.8 IS + Canon 2x II + Sigma 2x + Sigma 1.4x, 2263 mm, f/22, ISO 3200, 1/640 sec, manual exposure, pre-focused manually, 475B/516 support.

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2 responses

  1. Very cool. Thanks for sharing!

    July 12, 2011 at 8:45 am

  2. WOW

    April 21, 2011 at 1:38 am

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