Elizabeth W.

Prelude to Planetary Conjunction

Eliz's Prelude to Planetary Conjunction
© Elizabeth W.

date: 06 December 2006, 06:27am
location: Alexandria, VA (bldg roof)
film: CMOS chip ISO 400 equivalent, f/5.6
exposure: 0.5 sec.
camera setup: Canon EOS 20Da, 80mm (28-135mm lens)
telescope setup: none

comments: Mercury (high) and Jupiter (near horizon) are easy, Mars is about halfway between them
original image: IMG_4841.CR2
Processing in Photoshop:
1) make duplicate
2) to copy, apply Gaussian blur (radius 15), then reduce brightness and contrast (-65, -65)
3) from orig, apply image, subtract
4) resultant image, unsharp mask
5) adjust levels, curves
6) reduce size for web

Oh! And the string of lights along the bottom? Cars on the inner loop of the Beltway (495).