I Reprocessed the old Eta Carinae data to bring out more detail in the Keyhole. The image is not very sharp and detailed it really shows the limitations of the alt/az with No guiding setup.
360 x 25sec subs at iso 1600, darks and bias (150mins data)
12' LX200 (alt/az setup, no guiding)
Sony Nex-3 DSLR
Stacked in DSS
Processed in GIMP
Higher res
http://www.astrobin.com/45433/