Active Region 10537, or Sunspot 537 if you will, was visible without magnification (using polymer solar eclipse shades) on Sunday afternoon. On Saturday afternoon I could see AR 10536 without magnification but it was too close to the preceding limb on Sunday. Through my 114mm f/7.9 Celestron C4.5 Newtonian at 36 and 72x the multiple umbrae of both sunspots were visible on both days.
Dave Mitsky
Dave Mitsky
Chance favors the prepared mind.
De gustibus non est disputandum.
