STScI Logo

Hubble Space Telescope
Exposure Time

WFPC2 allows only certain quantized exposure times. This quantization is disregarded during computations herein.

Allowed exposure times (seconds):

 0.11  0.12  0.14  0.16  0.18  0.20  0.23  0.26  
 0.30  0.35  0.4   0.5   0.6   0.7   0.8  
 1.0   1.2   1.4   1.6   1.8   2.0   2.3    2.6  
 3.0   3.5     4     5     6     7     8
 10     12    14    16    18    20    23     26 
 30     35    40    50    60    70    80 
 100   120   140   160   180   200   230   260
 300   350   400   500   600   700   800   900
1000  1100  1200  1300  1400  1500  1600  1700
1800  1900  2000  2100  2200  2300  2400  2500  
2600  2700  2800  2900  3000  3100  3200  3300
3400  3500  3600  3700  3800  3900  4000  4100
4200  4300  4400  4500  4600  4700  4800  4900
5000  5100  5200  5300  5400  5500  5600  5800
6000  6200  6400  6600  6800  7000  7500  8000
8500  9000 10000 15000 20000 25000 30000 40000
50000 75000 100000