Our Questars are quite capable of excellent solar imaging. This might be a good place to show what can be accomplished with the right techniques and equipment. As the activity on the sun increases over the next few years it should be exciting to see what interesting features await discovery and capture.
Todays sun 7/19 had little to offer, other than the usual heat and light, when seen in white light. The low resolution full disk image shows two numbered active regions and a new spot just coming into view from the East. Next week should be more interesting as two active regions come into view.
The resolution of full disk images are severely limited by the posting restrictions here but our Questars are capable of much finer details. The extreme magnification produced using a 5x Powermate gives a hint of what is possible. Seeing conditions need to be better than they were today though.
The full disk image was taken using the Baader solar film and 540nm continuum filter. A .5x focal reducer was attached to the camera. The camera has a Sony 694 CCD, 1”, 6MP chip. The Sun’s image just fit and focus was almost at the end of it’s range (screwed all the way in). 500 individual frames were recorded and 50 frames were stacked. The resulting image was sharpened , colorized , cropped, and scaled down to 54% of the original and compressed.
The magnified images used the solar film and 540nm filter followed by a 5x Powermate and camera with a Sony ICX285, 2/3” CCD chip with 6.45um pixels. The processing was similar.
I hope to learn from the experts here in time for the solar maximum.