Calibration:
* uncheck "Two Axies"
* uncheck "Remove DEC backslash in guide calibration"
GPG RA Guider:
* enable GPG
Guide: as screenshot below. Please note that I have yet to test those settings due to cloudy weather. And also I have no precise idea on how to configure them, so that's why I'm posting this
My questions:
Based on info I've read online, the Pixels value for a DSLR should be between 15 and 20. Therefore, for my setup the number would be roughly 13 pixels. (15*(2.47/2.92), where 15 is the wanted pixel for my d7500, 2.47 the image scale of imaging setup and 2.92 image scale of guiding setup). The problem is that I cannot choose a value higher that 10 pixels, why's that?
From what I got, the threshold value should be equal or a bit higher than my average total RMS. Is that correct? Considering that I'll be guiding RA only, I should then consider the average RA RMS right? Or should I use the total average RMS event though I guide only in RA?
Does your guide scope have the same focal length as your imaging scope? If yes then your computation of the number of pixels to dither over is correct. If no then you need to take into account the ratio of the focal lengths of your telescopes. If, for instance, you image at F=400 mm and your guide scope has F=160 mm then you need to correct as follows: 15 * (2.47/2.92) * (160/400) = 5.075 pixels.