Is the loss of resolution due to the 40mm narrower aperture worth the extra 250mm focal length? Would the shorter-wider Newtonian be better with a 2x Barlow? I have access to a selection of point grey and ximea cameras that have c/cs mounts.
Reminds me of the analogy my maths teacher used to explain the difference between accuracy and precision. There appears to be a systematic error in your aim, which although very precise, is inaccurate.
It's quite neat scrolling down and seeing all the jobs for those that have filled in their G+ profile. Software, Engineer and Scientist would be dominant if I made a word cloud of my contacts' professions. Although, one stands out as a clear winner, Astronaut.