20081121 Sun

That worm yesterday was gone apparently, but after processing it can still be seen. Seeing 3/10, transparency 4/10. This is an equipment day, I have more time than I usally have to play around. First up is my regular setup, i.e. Borg 45ED II with Solarmax 40 and BF10. Next is my C5 PST setup, and then I went back to my regular setup plus double stacked with the PST etalon.

First two are taken with my Borg 45ED II, Solarmax 40 and BF10, DMK 31AF03:-

1353 (GMT+8):-


1354 (GMT+8):-


Next three are taken with my Cheapy-ERF/C5/PST/BF10 setup, first is a close up of the small prominence, 1409 (GMT+8), everything looked big with 1250mm:-


And even tiny active regions (no number) can be shown quite nicely, 1417 (GMT+8):-


Some surface detail near that small prominences, 1419 (GMT+8):-


A short clip taken with the C5/PST to show how poor the day time seeing was at 1250mm! The contrast is no good for this one, but you could see glimpse some dim prominences here:-


Time to try out double stacking, it's a Borg 45ED II setup, with Solarmax 40 and BF10 as usual, but the PST etalon is also installed, taken at 1427 (GMT+8):-


1428 (GMT+8):-


I guess I will need to pay more time to fine tune the two etalons, this time I basically kick out the internal reflection rather than maximizing the contrast and minimizing the uneven illumination.