Did anyone perform a side-by-side comparison between Synta (Skywatcher, Orion, Celestron, Vixen) 100 mm F/9 ED refractor and Synta (Skywatcher, Orion) 120 mm F/7.5 ED refractor as far as color correction and contrast for lunar and planetary observation?
I understand that both doublets use FPL53 ED glass and have the same 900 mm focal length. Of course the 120 mm refractor will collect more light, but this is not a big issue for the Moon or planets.
What I am after is this: If you have a very good example of the Synta 100 mm F/9 ED, would moving to the 120 mm F/7.5 ED is worth the extra cost and the extra physical weight when it comes to lunar and planetary observation?
I understand that both doublets use FPL53 ED glass and have the same 900 mm focal length. Of course the 120 mm refractor will collect more light, but this is not a big issue for the Moon or planets.
What I am after is this: If you have a very good example of the Synta 100 mm F/9 ED, would moving to the 120 mm F/7.5 ED is worth the extra cost and the extra physical weight when it comes to lunar and planetary observation?
