Capturing the ISS with the Nikon P900

Next Observation- Camera- Nikon P900 w/ homemade solar filter & my cellphone Date- 10/15/2017 & 10/16/2017 ISS TRANSIT FINDER- ISS Angular size math- So lets over-simplify and utilize some right-triangles to figure this out. Now lets say my Camera had a tilt of about 45 degrees. This would mean that our line of sight would be the hypotenuse of our right triangle and would equal 354 miles. Now the angular size of the Sun is degrees. Now lets see what the angular size of the ISS would be at 350 miles. Well the ISS is 350 feet on it’s longest size. So at 350 miles, that would equal degrees. Now the sun is 1,240 pixels wide on my screen. The ISS is 24 pixels on my screen. So if 1,240 pixels = degrees, that means 24 pixels = degrees. This means an error of only 4% from what we would expect. It’s practically EXACTLY what we would expect for a craft that size at that distance.