|
The following table indicates the field of view rotations for inertial targets
during continuous viewing intervals with Spitzer.
NOTES: "Total rotation" refers to the total FOV rotation during a single,
continuous viewing interval.
59 degrees is a special case since it is very close to the edge of one of the
viewing zones. In reality, there are two complete viewing intervals per year
at this latitude, each about 115.5 days long (231/2) with a FOV rotation of
0.93 degrees/day.
Ecliptic Latitude
(degrees) |
# days in the OPZ |
FOV Rotation
(deg/day) |
Total Rotation
(degrees) |
|
0 |
41 |
0.02 |
0.65 |
|
1 |
41 |
0.03 |
1.38 |
|
2 |
41 |
0.05 |
2.12 |
|
3 |
41 |
0.07 |
2.81 |
|
4 |
41 |
0.09 |
3.52 |
|
5 |
41 |
0.1 |
4.3 |
|
6 |
41 |
0.12 |
5.00 |
|
7 |
42 |
0.14 |
5.83 |
|
8 |
42 |
0.16 |
6.70 |
|
9 |
42 |
0.17 |
7.29 |
|
10 |
42 |
0.19 |
8.12 |
|
11 |
42 |
0.21 |
8.87 |
|
12 |
42 |
0.23 |
9.47 |
|
13 |
43 |
0.24 |
10.53 |
|
14 |
43 |
0.26 |
11.37 |
|
15 |
43 |
0.28 |
12.13 |
|
16 |
43 |
0.30 |
12.75 |
|
17 |
43 |
0.31 |
13.36 |
|
18 |
44 |
0.33 |
14.49 |
|
19 |
44 |
0.35 |
15.31 |
|
20 |
44 |
0.37 |
16.13 |
|
21 |
45 |
0.39 |
17.36 |
|
22 |
45 |
0.40 |
17.97 |
|
23 |
45 |
0.41 |
18.56 |
|
24 |
46 |
0.43 |
19.68 |
|
25 |
46 |
0.44 |
20.46 |
|
26 |
47 |
0.48 |
21.85 |
|
27 |
47 |
0.48 |
22.69 |
|
28 |
48 |
0.50 |
24.05 |
|
29 |
48 |
0.51 |
24.60 |
|
30 |
49 |
0.54 |
25.79 |
|
31 |
49 |
0.54 |
26.32 |
|
32 |
50 |
0.56 |
27.85 |
|
33 |
50 |
0.57 |
28.69 |
|
34 |
51 |
0.59 |
30.28 |
|
35 |
52 |
0.61 |
31.51 |
|
36 |
53 |
0.62 |
32.73 |
|
37 |
53 |
0.63 |
33.22 |
|
38 |
54 |
0.65 |
34.89 |
|
39 |
55 |
0.67 |
36.60 |
|
40 |
56 |
0.68 |
37.99 |
|
41 |
57 |
0.69 |
39.18 |
|
42 |
58 |
0.70 |
40.55 |
|
43 |
59 |
0.72 |
42.35 |
|
44 |
61 |
0.74 |
44.92 |
|
45 |
62 |
0.74 |
46.06 |
|
46 |
63 |
0.75 |
47.44 |
|
47 |
65 |
0.77 |
50.30 |
|
48 |
67 |
0.79 |
52.67 |
|
49 |
68 |
0.79 |
53.70 |
|
50 |
70 |
0.81 |
56.70 |
|
51 |
72 |
0.82 |
59.13 |
|
52 |
75 |
0.83 |
62.28 |
|
53 |
77 |
0.85 |
65.42 |
|
54 |
80 |
0.85 |
68.36 |
|
55 |
83 |
0.87 |
72.30 |
|
56 |
87 |
0.88 |
76.61 |
|
57 |
92 |
0.90 |
82.57 |
|
58 |
98 |
0.91 |
88.93 |
|
59 |
231 |
0.93 |
214.89 |
|
60 |
232 |
0.93 |
215.59 |
|
61 |
233 |
0.93 |
216.41 |
|
62 |
235 |
0.93 |
219.24 |
|
63 |
237 |
0.93 |
221.48 |
|
64 |
239 |
0.94 |
223.47 |
|
65 |
241 |
0.94 |
225.46 |
|
66 |
243 |
0.94 |
227.80 |
|
67 |
245 |
0.94 |
230.07 |
|
68 |
248 |
0.94 |
232.52 |
|
69 |
251 |
0.94 |
235.79 |
|
70 |
255 |
0.94 |
239.48 |
|
71 |
259 |
0.94 |
244.16 |
|
72 |
263 |
0.94 |
247.87 |
|
73 |
269 |
0.94 |
254.20 |
|
74 |
275 |
0.95 |
259.89 |
|
75 |
282 |
0.95 |
267.65 |
|
76 |
291 |
0.95 |
275.87 |
|
77 |
303 |
0.95 |
288.63 |
| 
