This photo of Jupiter was taken on 22-Jul-2008 using an EF-300mm lens with TWO Teleconverters !!
Jupiter was quite high in the sky (around 70 degrees up)
Seeing was quite good.
Canon EOS Digital Rebel XTi ,Canon EF-300mm f/4L IS USM
300mm lens + two(!) 2x Teleconverters (TC1=Canon, TC2=Teleplus)
Shutter speed: 1/50s
Effective Focal Length: 1200mm
Effective Aperture: f/16
Mirror Lock-up enabled
Camera triggered with RC-1 remote control
28 frames stacked with Registax
you are most welcome to check out some of my other photos at: