The StellarMate Plus Manual
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calibration settings unless you want to close the dust cover to ensure no light at
all passes through the optical tube. For flat fields, you must specify the flat field
light source, and then specify the duration of the flat field frame. The duration
can be either manual, or based on ADU calculations.
1. Flat Field Source
o Manual: The flat light source is manual.
o Dust Cover with Built-In Flat Light: If using a dust cover with built-in
light source (e.g. FlipFlat). For dark and bias frames, close the dust cap
before proceeding. For flat frames, close the dust cap and turn on the
light source.
o Dust Cover with External Flat Light: If using a dust cover with external
flat light source. For dark and bias frames, close the dust cap before
proceeding. For flat frames, open the dust cap and turn on the light
source. The external flat light source location is presumed to be the
parking location.
o Wall: Light source is a panel on the observatory wall. Specify the
Azimuth and Altitude coordinates of the panel and the mount shall slew
there before capturing the flat field frames. If the light panel is
controllable from INDI, Ekos shall turn it on/off as required.
2. Flat Field Duration
o Manual: Duration is as specified in the Sequence Queue.
o ADU: Duration is variable until specified ADU is met.
Before the calibration capture process is started, you can request Ekos to park
the mount and/or dome. Depending on your flat source selection above, Ekos will
use the appropiate flat light source before starting flat frames capture. If ADU is
specified, Ekos begins by capturing a couple of preview images to establish the
curve required to achieve the desired ADU count. Once an appropiate value is
calculated, another capture is taken and ADU is recounted until a satisfactory
value is achived.
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