3 ms·
Yes, just 0.5nm of spectrum in the instrument used (https://dkist.virtualsolar.org/vanNoortfastcam/ https://dkist.virtualsolar.org/vanNoortfastcam/, see under “
by mturmon 2mo ago
Yes, just 0.5nm of spectrum in the instrument used (https://dkist.virtualsolar.org/vanNoortfastcam/ https://dkist.virtualsolar.org/vanNoortfastcam/, see under “DataSetDescriptions.pdf”).
If the pixels really are 20x20km, located at 1AU, I get 500k photons (within that bandpass) per pixel per frame at 740 Hz, not counting optical losses.
Space solar instruments like HMI on SDO (https://science.nasa.gov/mission/sdo/ https://science.nasa.gov/mission/sdo/) have one or more pre-filters in front of the instrument to block some light far from the passband and keep heating under control. I’m not sure if DKIST has such filters.
- left-struck 2mo ago740hz is the frame rate you’re capturing at?
- mturmon 2mo agoNot “me,” but yes, that’s the rate quoted in the document I linked about the instrument that captured the images in OP.