[Aavso-photometry] In defense of the ST-9 & CCD choiceConsiderations

[Keith Graham]

Hi Tim,

Your explanation of the ST-9 match to the SCT f/10 scopes agrees precisely with my reasoning for chosing the ST-9 for my SCT f/10 system. I am a believer is matching resident chip pixel size with the scope. The smaller pixel (ST-7 and ST-8) cameras are a great match for the faster scopes, but for the f/10 systems, I much prefer the ST-9. 

Keith Graham