This morning's calculations were made in a hurry, and I mistook minutes of arc for seconds of arc. The ring will actually have a thickness of 15.75 seconds of arc (1/4 minute of arc). That is still pretty small, but larger than my morning erroneous calculation. The solar diameter on the 20th during the eclipse is 31.558 minutes of arc. The ring thickness will be only 0.83% of the diameter. Now for the excuse: I had to hurry off to a class this morning. I must have gotten a bit smarter in the class. This shows the need for peer review. Anyone feel like checking this calculation? From: Brent Watson <brentjwatson@yahoo.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, May 9, 2012 7:46 AM Subject: [Utah-astronomy] Annular but not by much This looks to be annular only by a very small margin. My initial calculations show the the uncovered disk of the sun will be a ring only 1/4 second of arc thick. Does this jive with other's calculations? If this is correct, it will be very interesting to see what that small amount of sunlight will do to destroy the view of the corona and prominences. If anything is visible, it will be only fleeting. Perhaps Baily's Beads will be the star of the show. _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Send messages to the list to Utah-Astronomy@mailman.xmission.com The Utah-Astronomy mailing list is not affiliated with any astronomy club. To unsubscribe go to: http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Then enter your email address in the space provided and click on "Unsubscribe or edit options".