Lacerta M-Gen User Manual page 51


Time
: (real, 0 ... 99.99 seconds) profile
Holds the backlash time.

Apply
: (decimal, 0 ... 99 %) profile
The physically applied percentage of
You can trim the applied backlash time with this. Doing a precise (or more) amount of
corrections may make the DEC oscillate (slowly) if the mount's reaction is not that
exact.

Measure
: (button)
Starts measuring the backlash time. It can be done only when there is no autoguiding
in progress and there is calibration data available. The measuring procedure is very
similar to the DEC calibration and can be interrupted. (If doing so, the mount is not
moved back to the original position.)
If the measurement is successful, the result is written into the
of an error it is displayed. If zero is measured, the mount may have no or less backlash
than the seeing and polar misalignment's drift during the procedure.
Extra page (5/5)
5.1.10.4
This page is reserved for miscellaneous settings and functions.
The screen items:

ImgProc.
: (special)
Selects the image processing method. OLD and NEW are the options.
OLD is fully identical with the one used in the previous Firmwares (below 2.10).
NEW is a more complex method of measuring the star. It does not require a threshold
value and behaves always as 'partial' (see at the next item).

Full wnd. / Partial
This sets the image processing details of the OLD mode. "Full wnd." (="full
window") processes the guiding window image on the whole, so only one star should
be seen through the window. This was the default in the oldest Firmwares.
The other method is called "Partial", which means that one star (point) and it's
environment is processed only, other pixels are discarded. The next frame's search
point is the previous frame's (or latest known) star position. The search is done with a
growing-radius set of octagons, which ends when no more star pixels are found in the
last octagon's pixels. The pixels 'outside' this shape are discarded (but still displayed).

Camera OFF
To turn ON/OFF the camera. Useful if You have to plug out the camera cable for
some purpose and then You can restart the star following from the latest position by
selecting ON from here:
: (switch)
: (button)
Time
value.
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Time
item. In the case