I am trying to understand how to get a statistic from my images that I can use for manual focusing. I normally use FWHM or HFD. I normally use the “Information Panel” in Maximdl. I have place an image in dropbox, https://www.dropbox.com/s/lrbe4erxeo3lrke/E2_15sec_1x1_L_frame1.fit?dl=0. I have read the help system and tells me to click on the “Star” icon to calculate HFR. All that happens when I do is that the HFR number in the image statistics panel changes from N/A to 0.00.
I do not have an electronic focuser and would like to get to focus by having SGP do continuous short, 5 sec, exposures calculating and displaying a statistic, FWHM , HFR or HFD for each exposure without the need for me to press any buttons in between exposures.
I have been struggling to figure out how to do this and would very much appreciate some assistance.