Editing Talk:2564: Sunshield
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Also, the JWST is drawn here to resemble the old Polaroid Land SX-70 Instant Camera (of just about 50 years ago.) Hmmmm. "Instant" raises issues of relativistic simultaeity.... | Also, the JWST is drawn here to resemble the old Polaroid Land SX-70 Instant Camera (of just about 50 years ago.) Hmmmm. "Instant" raises issues of relativistic simultaeity.... | ||
:Worse than that, shutter-click and ''then'' a flash (at least a frame of time apart) isn't that useful. | :Worse than that, shutter-click and ''then'' a flash (at least a frame of time apart) isn't that useful. | ||
β | :Trigger the flash and ''then'' the shutter around the time the flash returns. Depending upon distance and depth-of-field involved (also the duration of the flash and the movement of the subjects) you might have a longer shutter-open taking in passive light | + | :Trigger the flash and ''then'' the shutter around the time the flash returns. Depending upon distance and depth-of-field involved (also the duration of the flash and the movement of the subjects) you might have a longer shutter-open taking in passive light but mostly registering the 'bounce-back' from any given distance as the overwhelming flash gets there and back. |
:(See various planetary nebulae photos where 'shells' of illumination, from subsequent flareups in the active centre, make it look like there's shells of matter, when it's more that these are volumes of debris that were in the right place at the right time to give us the current reflected glory. It makes for interesting mind-experiments.) [[Special:Contributions/172.70.85.73|172.70.85.73]] 18:39, 5 January 2022 (UTC) | :(See various planetary nebulae photos where 'shells' of illumination, from subsequent flareups in the active centre, make it look like there's shells of matter, when it's more that these are volumes of debris that were in the right place at the right time to give us the current reflected glory. It makes for interesting mind-experiments.) [[Special:Contributions/172.70.85.73|172.70.85.73]] 18:39, 5 January 2022 (UTC) | ||
The JWST doesn't have a physical shutter, but makes a clicking sound so that it can't secretly take voyeuristic photographs of the universe.[[Special:Contributions/162.158.187.92|162.158.187.92]] 21:24, 5 January 2022 (UTC) | The JWST doesn't have a physical shutter, but makes a clicking sound so that it can't secretly take voyeuristic photographs of the universe.[[Special:Contributions/162.158.187.92|162.158.187.92]] 21:24, 5 January 2022 (UTC) |