It can get very confusing using a telescope. The LX-90 through an eyepiece fitted to a diagonal will invert left-right but not up-down. Then add a camera and it behaves differently again. I experimented and devised some tables to help me understand.
Or has it just made me even more confused?
LX-90
in ALT-AZ Mode with diagonal fitted:
ARROW
|
OTA
|
EYEPIECE
|
CANON
60D CAMERA LIVE VIEW
|
VIEW
|
OBJECT
|
VIEW
|
OBJECT
|
^
Up
|
Up
|
Up
|
Down
|
Up
|
Up
|
v
Down
|
Down
|
Down
|
Up
|
Down
|
Down
|
>
Right
|
Right
|
Right
|
Right
|
Right
|
Left
|
<
Left
|
Left
|
Left
|
Left
|
Left
|
Right
|
So,
When
Using the Eyepiece:
TO
MOVE THE OBJECT IN THE VIEW
|
USE
THE KEY
|
Up
|
Down
|
Down
|
Up
|
Right
|
Right
|
Left
|
Left
|
In
the eyepiece, vertical is intuitive and horizontal is inverted.
When
Using the Camera:
TO
MOVE THE OBJECT IN LIVE VIEW
|
USE
THE KEY
|
Up
|
Up
|
Down
|
Down
|
Right
|
Left
|
Left
|
Right
|
In
the camera, horizontal is intuitive vertical is inverted. Oh, boy, that's confusing!
LX90-08 rp