Is your sampling matched to the seeing?
Calculate your arcseconds per pixel and find out if your setup is oversampled, undersampled, or in the sweet spot for your local conditions.
Inputs
1 = none, <1 = reducer, >1 = Barlow
Typical FWHM for your imaging site
Results
Adjust the inputs to see results.
Image scale formula: arcsec/px = 206.265 × pixel size (µm) × binning / focal length (mm)
All formulas verified by automated tests.