Nikon D200
Sigma 120-300 f2.8 EX HSM
Sigma EX 2x teleconverter
Sigma EX 1.4x teleconverter
ISO 400
F10, 1/250 second
Provo, UT
The moon. I bracketed my exposure and used a tripod.
With the teleconverters this is 840mm — equivalent to 1260mm in 35mm format — and I still had to crop the image a bit. The image quality also suffers when you use both teleconverters at the same time.