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Isotri

Subject: Venus, Castor, and Pollux Date: May 21, 1999 Time: ~9:30 pm Location: Provo, UT Lens: Macro F-stop: 1.7 Exposure time: 5, 10 s Filters: none Film: Kodak Max ISO/ASA: 800 About the Title: On this night, Venus (bottom middle) made an isosceles triangle with Castor (top right) and Pollux (top left). "Isotri" is just an abbreviation from isosceles and triangle.

This is a triple combination of two pictures -- a five-second exposure and a ten-second exposure. I decreased the brightness and increased the contrast significantly on the ten-second exposure to bring out more definition in Venus, which was behind a thin cloud. I merged this with the original version of the ten-second exposure, as well as with the five-second exposure. This increased the stars' visibility, as it was not only still light, but also cloudy. I did not get another opportunity to see the triangle, as a cloud cover came in shortly after and remained for the rest of the time it was in the sky. See also Filial Love.