Hi All,
And please forgive if this has been asked before, but I can’t find anything on it.
Question is simply, how does the Firecapture “focus help” feature work?
When I activate it, eg pointing at Saturn a couple of nights ago, I see a screen with red at the top, green at the bottom, a black dividing zone in the middle, and a graph line marching from left to right in time with the camera’s exposures.
The faster the exposures, the faster the graph updates, and vice-versa. As I adjust the focus, the graph’s trend line shifts up or down accordingly.
What I do not yet understand, is what is the optimum location for this trend line for optimum focus. Should it be in the middle (intuitive), in the green zone (also intuitive), or in the red zone (counter-intuitive)?
And yes I know some may say just eyeball-focus using the planet’s image on-screen, but even with good seeing and a fast exposure (tried 0.1s, 0.2s and 0.3s with Saturn the other night), the screen image still bounces a bit and shimmers in and out of focus a lot.
What I’m hoping to do with the focus help feature, is “load the dice” for the lucky imaging method by finding an optimum focus point.
Thanks
Mike