Arc Minute / Pixel Per Degree
Hello everyone,
i previously wrote an email to one of your members and was told to repost my question here.
So, I am currently working on a project where I am defining requirements for simulators, more specifically the display quality/requirements.
For a few days now I have been trying to learn about "arc minute" and "pixel per degree", because my previous "instrument" (pixel per inch) does not take into account the human factor (sitting position, distance to the display). To make sure I understand the calculation and to be able to decide which one (arc minute or pixel per degree) to use, I have created a small Excel file to perform these calculations, but I am encountering some difficulties with certain aspects of the formulas. I have 2 different versions (the orange part), one where the arc minute calculation seems correct, and one where the pixel per degree calculation seems correct, but I am not sure, I have a feeling I am doing something wrong. Would you guys be able to take a look and help me out?
Also, I have been looking at papers/literature and it seems like Arc Minute is the right "instrument" to use for recommendations for simulators/displays, although Pixel per Degree seems to be used as well, what do you guys think about that? Any help you can offer would be greatly appreciated.
Thanks in advance.