Yes, that's all there is to it, apart from a few adjustments, of course! I bought Tom's book and it is excellent - a great introduction to "astro" or "celestial" whichever you prefer...

Could you please give me two Sun Shots from a stationary position? Time/Date UTC, and altitude corrected for upper or lower limb and refraction. I believe I came up with a super easy method to reduce I would like to try out.