Resolution and splitting doubles.
- I am imaging at 1.35 as/p. Is it the case that if I try split double stars,that I can use their separation as an indicator of seeing, by looking at the image and checking the smallest double star separation where I can see some space between the stars?
- --- "Robert" <robert.hertel@...> wrote:
> I am imaging at 1.35 as/p.It only complicates interpreting the image. A straight-forward FWHM reading is an easier and accurate measure of resolution. However, any measure of image resolution is not a measure of actual seeing, but rather a convolved measure of all the factors that affect the image (optical quality, defocus, collimation, sampling, tracking, guiding, vibrations, etc.)
> Is it the case that if I try split double stars,
> that I can use their separation as an indicator of seeing
BTW that is a pretty crude sample rate that seems rather unsuitable for close doubles (e.g. I doubt that you have ever split a 1" double with that sampling). You might be interested in the controlled (artificial) double stars in the sampling illustrations here: