Quote:
Originally Posted by Steffen
Is that some kind of focussing mask on the bottom right?
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A Bartinov Mask Steffen

hehe,,
Pic attached showing names of each Filter in the Wheel - from Link 4 below
Fun Fact : JWST has an effective f/number of f/16.67, and an effective focal length of 131.4 m.
Have found some other interesting info on this Miri Filterwheel -->
1st; is an 'Animation' of the Light travelling through the MIRI Imaging System, quite remarkable,,,
https://www.youtube.com/watch?v=UfG5wqsM3Bk
2nd; YouTube showing the Filterwheel moving through its Positions 'Testing'
https://www.youtube.com/watch?v=fu7TH8FWmoc
3rd; PDF (Particularly Slides 4-8 showing some of the Corongraphic filters used,,
http://ircamera.as.arizona.edu/MIRI/...oronagraph.pdf
4th; MIRI Filters and Dispersers
https://jwst-docs.stsci.edu/jwst-mid...and-dispersers