The image may be projected onto a translucent screen for real-time viewing -LRB- popular for observing solar eclipses ; see also camera obscura -RRB- , or can expose film or a charge coupled device -LRB- CCD -RRB- .

The image may be projected on a translucent screen for real-time viewing -LRB- popular for viewing solar eclipses ; see also camera obscura -RRB- .
