23 Jul
2010
23 Jul
'10
5:59 p.m.
I just tried with a #14 welding filter. "Hints of suspicion" but nothing for sure. patrick On 23 Jul 2010, at 17:20 , Chuck Hards wrote:
It's a nice "double spot" complex in the 50mm f/9 at 16X, but not quite naked-eye, at least for this observer, using Baader mylar and a 25% transmission moon filter together.
On 7/22/10, Canopus56 <canopus56@yahoo.com> wrote:
Active Region 1089 has grown so large, that it appears this sunspot is now a naked-eye object (through suitable solar protective screening.)