Proc bubble at 1.5 hrs under exceptional seeing

ptc (Richard) · #1 14-09-2010, 10:23 AM

from Friday night: no moon exceptional seeing conditions

I measured 1.88" stars in 15 minute guided subexposures!

http://www.narrowbandimaging.com/ngc...s4_ha_page.htm

FIT data included this time

processing was simple stretch and curves; no further processing

star size quote was based on an image scaleof 0.453"/pixel

renormalised (Carl) · #2 14-09-2010, 10:36 AM

Nice shot

How did you manage with such a large scope!!!!. That'd take a month of Sunday's to setup!!!.

multiweb (Marc) · #3 14-09-2010, 05:44 PM

Very sharp. Amazing clarity.

ptc (Richard) · #4 16-09-2010, 12:43 AM

Quote:

Originally Posted by multiweb

Very sharp. Amazing clarity.

Thanks Marc

The conditions were nearly unbelievable. I've had exceptional seeing a lot recently but never with calm winds. Until I can get the beast into a building (observatory) I am held hostage by the winds.

This past weekend I had the fortunate combination of exceptional seeing and calm winds such that in a stack of 6 x 15 minutes I measured stars in the 1.88" range.

Wow!