Pixel Sizes for the Gatan MegaScan 794 CCD
Camera on the JEOL JEM 1010

Here is a table with the nominal magnifications of the JEOL JEM 1010 and the corresponding pixel sizes and calibrated (or calculated) magnifications for the MegaScan 794 CCD camera (determined using DigitalMicrograph and a replica diffraction grating, a so-called waffle grid). The values shown in blue correspond to the Low Mag mode of operation while the values in black correspond to the normal Mag mode. Magnifications in magenta are those determined by DigitalMicrograph during the calibration procedure while the other magnifications (shown in black) are pure calculations.

 
Calibrated Pixel Size (TEM Mode)
 
 
 
nominal magnification
pixel size (nm)
calibrated
or calculated magnification
 
 
 
50
410.488
58.47
60
342.073
70.16
80
256.555
93.55
100
205.244
116.93
120
118.264
202.94 *
150
137.087
175.07
200
100.865
237.94
250
78.397
306.14
300
61.962
387.34
400
46.974
510.93
500
36.807
625.06
600
30.091
797.59
800
22.629
1060.58
1000
18.560
1293.13
600
24.902
963.8
750
18.907
1296.4
1000
15.037
1596.1
1200
12.781
1877.7
1500
10.467
2292.9
2000
8.459
2837.2
2500
6.680
3592.9
3000
5.576
4303.8
4000
4.352
5514.4
5000
3.506
6845.6
6000
2.921
8216.9
7500
2.363
10156.6
10000
1.733
13848.5
12000
1.453
16520.4
15000
1.172
20477.5
20000
0.879013
27303.4
25000
0.70321
34129.2
30000
0.586008
40955.0
40000
0.439506
54606.7
50000
0.351605
68258.4
60000
0.293004
81810.1
75000
0.234403
102387.6
100000
0.175803
136516.8
120000
0.146502
163820.2
150000
0.117202
204775.2
200000
0.087901
273033.6
500000
0.03516
682584.0
 
*the recorded calibration image appears to be at a magnification between the 200x and 150x images

Due to the small field of view of the MegaScan 1000 camera, and the camera's large pixel size, it is quit difficult to do calibrations of the camera at magnifications higher than ~12,000x: there are too few (or even less than one) waffle squares to measure their size accurately for mags greater than ~12,000x and only magnifications above 150,000x (where the 1010 has issues with brightness and overall performance) can be used to record the atomic spacings of graphite or crystalline gold. The EMC staff is working on ways to calibrate better the magnifications and pixels sizes for magnifications above 12,000x, and will let users know when things change.

NOTE: The pixel sizes shown in this chart are exactly those reported by Digital Micrograph on June 7, 2016 (and July 26, 2016, for the Low Mag mode data). Further attempts to calibrate the camera are likely to change some of these values.