The filter works well when ambient temp is 90 degrees, we may need to send it back to resolve this issue. Roger Butz has been in contact with DayStar, we will have all issues worked out in time for solar max.
Those who arrived a SPOC early yesterday got a real treat.
Siegfried Jachmann brought a large rejection filter with him which Bruce Grim was able to kluge to the front of the Bogdan refractor. Roger Butz then attached SLAS's newly refurbished .5 â« research grade H-Alpha filter in front of the eyepiece.
The results were spectacular!
Grandularity in the photosphere practically jumped out of the eyepiece at the viewer and while there weren't many prominences those that were there were contrasty and a delight to the eye.
I can't wait until there's a chance to use the set up when the Sun's high in the sky (like at next month's Stansbury Day and at the Star-B- Q).
Better still will be when there's more solar activity (yesterday's prominences were not very big and there were no sunspots).
'Course in order to do that SLAS is going to need to buy the rejection filter since the one Siegfried brought was only on loan from someone out of state. I think Sieg said the owner wants $400 for it.
patrick _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://gallery.utahastronomy.com Visit the Wiki: http://www.utahastronomy.com