While perusing one of the sample science programs for the JWST (NIRCam WFSS Deep Galaxy Observations), I came across Step 5, “Decide on dither pattern.”
Instead of guessing — or worse, assuming — what a “dither pattern” is, I thought I’d ask (within the context of program planning and image acquisition):
What is a dither pattern?
Why might one be needed?
How are dither patterns implemented on the JWST?
Extra “points” for sample imagery (real or simulated), that shows the effects of using a dither pattern in this context.