Saturday, August 26, 2017

Sunspot Report for NearSys Station, 26 August 2017

I am going to investigate making weekly sunspot counts using a Sunspotter telescope and a cell phone camera. I want to find a procedure using Fiji image analyzing software to increase contrast of the image and count the number of sunspots.

Here's the first image. Unfortunately I haven't been able to design a procedure to detect and count sunspots yet. I expect the procedure will involve thresholding the solar image.
At least the image has been enhanced. Next is to sharpen it and then threshold it to isolate sunspots. Fiji the could count them more consistently than I can. Note, there's one sunspot group near the middle of the disk.

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