October 18th sun
Posted 18 October 2012 - 06:14 PM
Finally a clear day. I've been able to do two sketches at 300X before the seeing degrade drastically.
Posted 18 October 2012 - 07:45 PM
Posted 19 October 2012 - 06:38 AM
I did some tests yesterday and I have to adjust my stencils because the circle representing the eyepiece's FOV is much larger when looking at the eyepiece than the one I have on my 8" 1/2 X 11" sheet of paper. So the drawing area on my sheet is smaller than the actual image even at 50º FOV and certainly worst if I use a 82º FOV eyepiece.
Posted 20 October 2012 - 02:13 PM
Very well done. You get some remarkably good views with your scope/eyepiece setup. 152mm of aperture is probably close to optimal for solar observing.
One suggestion--you might want to take note of how much of a curve you're giving the solar limb in your closeup drawings. The tendency is to put more curve than is actually there.
Posted 22 October 2012 - 08:54 AM
I'm not sure to get your point ? You find the closeup curve is too much ? Certainly it represent what I see in the eyepiece actually. I have to redo my stencils of those with less magnification.
Posted 24 October 2012 - 05:13 AM
I know you are trying to render a realistic view. Your drawings are quite good and if the proportions are off at all, it's not by much. I could well be wrong--it's just the way it looks to my eye.
Posted 24 October 2012 - 06:55 AM
Today I'll try new stencils where the curve is less prononced.