The StellarMate Plus Manual
237 / 341
· Initial Step Size: Initial step size in ticks to cause a noticeable change in HFR
value. For timer-based focuser, it is the initial time in milliseconds to move the
focuser inward or outward.
· Max Step size: The maximum single step size the algorithm is allowed to
command as it searches for the critical focus zone. The calculated step size
would be limited to this maximum value.
· Settle: Sets the amount of seconds to wait after moving the focuser before
capturing the next image during Auto Focus.
· Max Travel: Maximum travel in ticks before the autofocus process aborts.
· Frames: Number of average frames to capture. During each capture, an HFR is
recorded. If the instantaneous HFR value is unreliable, you can average a
number of frames to increase the signal to noise ratio.
· Out Step Multiple: This is the number that is multiplied by initial-step-size to
get the number of outward steps that the Linear Focus algorithm moves away
from the initial position at the start of focusing.
V-Curve
The V-shaped curve displays absolute position versus Half-Flux-Radius (HFR)
values. The center of the V-curve is the optimal focus position. Once Ekos
crosses from one side of the V-curve to the other, it backtracks and tries to find
the optimal focus position. The final focus position is decided by which algorithm
is selected.
To Next Page
Loading...
