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Note that if a "hand" symbol appears when a cursor passes over an image then clicking will expand the image.
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Handdrawn sketch of sunspot activity across
the equator. Symbols a, b and b* in the sketch indicate the following:
a. 12 June 2004 @
4:37 pm @ 39 deg elevation. Elongated shape. Penumbra twice the diameter of spot. Image slightly exceeds 0.94 deg FOV of a
24mm Questar Brandon eyepiece. Magnification 53. Spot almost stationary but if moving then inward toward center.
b. 19 June 2004 @ 6:30
pm @ 28 deg elevation. More spots than a week ago. They have crossed the equator. See especially the smudges near 2 o'clock
and the spot at 6 o'clock.
b*. Spot under Barlow for
a magnification of 85.
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My observation of a partial solar eclipse on May 10, 1994 as projected via binoculars
onto a white background.
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I tracked Comet Swift-Tuttle using 10 x 70 binoculars
in November 1992. These images describe my observations.
I was in Montrose Park in Georgetown, Washington, DC,
gazing at the western night sky when, in one of my binocular passes, I noticed a light gray blob. I made several more runs
to confirm that something was really out there. Having read about Comet Swift-Tuttle which was wending its way, at that
time, through the constellation of Hercules, 27.4 light years from earth, I felt that I had, in fact, spotted it.
Over the next couple of days, I returned to the Park
and made the observations described above. Using Uranometria 2000.0, I checked my observations against computer predictions.
There was disagreement which generated a letter.
Swift-Tuttle's track plotted in Uranometria 2000.0.
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