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ACA Trending: Oct 2026

Click an image to enlarge it. The slopes are in Mag / day.

ACIS
Slope: -4.017e-04 STD: 5.886e-02

Slope: -4.056e-03 STD: 9.098e-02

Slope: -6.915e-04 STD: 6.609e-02
 

Slope: -1.603e-03 STD: 6.834e-02

Slope: -1.409e-03 STD: 6.553e-02

Slope: -6.708e-05 STD: 8.134e-02
 
HRCI
Slope: -4.077e-04 STD: 1.739e-02

Slope: -2.038e-04 STD: 2.007e-02

Slope: -3.712e-05 STD: 2.036e-02

Slope: -4.636e-05 STD: 6.088e-03
HRCS
Slope: -2.411e-03 STD: 1.342e-02

Slope: -1.375e-03 STD: 1.201e-02

Slope: -1.844e-03 STD: 1.262e-02

Slope: nan STD: nan
IDID StringMagnitudeData Quality (%)Total Data
AverageMinMaxGoodMarginalBad
1 ACIS-1 7.235 4.809 7.370 100 0 0 66
2 ACIS-2 7.107 6.305 7.324 100 0 0 46
3 ACIS-3 7.404 7.001 7.548 100 0 0 55
4 ACIS-4 7.201 6.566 7.354 100 0 0 53
5 ACIS-5 7.194 6.367 7.358 97 0 2 95
6 ACIS-6 7.240 6.917 7.429 96 0 3 30
7 HRC-I-1 6.820 6.628 6.862 100 0 0 7
8 HRC-I-2 6.856 6.242 6.907 100 0 0 8
9 HRC-I-3 6.884 6.827 6.930 100 0 0 6
10 HRC-I-4 6.808 6.624 6.836 100 0 0 3
11 HRC-S-1 6.812 6.714 6.840 100 0 0 4
12 HRC-S-2 6.820 6.610 6.855 100 0 0 5
13 HRC-S-3 6.863 6.787 6.890 100 0 0 5
14 HRC-S-4 6.823 6.784 6.839 100 0 0 1

Level 1 Slot Trending: Oct 2026

Click an image to enlarge it. The slopes are per day.

SlotPos_ErrDelta MagnitudeAngyneaAngznea
0
Slope: nan STD: 8.957e-03

Slope: nan STD: 8.957e-03

Slope: 3.522e-06 STD: 2.716e-06

Slope: 2.716e-06 STD: 1.149e-03
1
Slope: nan STD: 9.174e-02

Slope: nan STD: 9.174e-02

Slope: -3.640e-05 STD: -9.107e-05

Slope: -9.107e-05 STD: 1.319e-03
2
Slope: nan STD: 1.682e-02

Slope: nan STD: 1.682e-02

Slope: 2.773e-05 STD: 1.790e-05

Slope: 1.790e-05 STD: 1.930e-03
3
Slope: -2.245e-05 STD: 2.242e-02

Slope: -2.245e-05 STD: 2.242e-02

Slope: -1.419e-04 STD: -1.645e-04

Slope: -1.645e-04 STD: 7.820e-03
4
Slope: 1.687e-04 STD: 2.589e-02

Slope: 1.687e-04 STD: 2.589e-02

Slope: -2.173e-04 STD: -1.754e-04

Slope: -1.754e-04 STD: 7.912e-03
5
Slope: 4.709e-05 STD: 1.907e-02

Slope: 4.709e-05 STD: 1.907e-02

Slope: -1.879e-04 STD: -1.873e-04

Slope: -1.873e-04 STD: 8.392e-03
6
Slope: 2.956e-04 STD: 3.285e-02

Slope: 2.956e-04 STD: 3.285e-02

Slope: -6.706e-05 STD: -6.362e-05

Slope: -6.362e-05 STD: 1.175e-02
7
Slope: -1.444e-04 STD: 1.451e-02

Slope: -1.444e-04 STD: 1.451e-02

Slope: 3.233e-04 STD: 1.670e-04

Slope: 1.670e-04 STD: 5.153e-02

Note

pos_err: ((ra_err*cos(dec))^2 + dec_err^2)^0.5
diff: mag_aca - mag_aca_avg
slope: slope agaist time (sec)
std: standard deviation of the data

When looking at Guide Stars

slotrms_ra_err (deg)rms_dec_err (deg) rms_delta_mag (marcsec)number avg_angynea (arcsec)avg_angznea (arcsec) number_nea goodmarginalbad
00.000e+000.000e+000.000e+00 00.000e+000.000e+00 00.000.000.00
10.000e+000.000e+000.000e+00 00.000e+000.000e+00 00.000.000.00
20.000e+000.000e+000.000e+00 00.000e+000.000e+00 00.000.000.00
31.327e-051.506e-054.704e-03 1253.045e-022.908e-02429570100.000.000.00
41.195e-051.325e-055.441e-03 1253.394e-023.324e-02429579100.000.000.00
51.369e-051.451e-055.867e-03 1253.836e-023.847e-02429543100.000.000.00
61.167e-051.635e-057.176e-03 1254.625e-024.735e-02429494100.000.000.00
71.222e-051.413e-056.434e-03 1205.241e-025.164e-02424623100.000.000.00
AVG7.850e-069.163e-063.703e-03 772.518e-022.497e-0226785162.500.000.00

When Looking at FIDs

slotrms_ra_err (deg)rms_dec_err (deg) rms_delta_mag (marcsec)number avg_angynea (arcsec)avg_angznea (arcsec) number_nea goodmarginalbad
00.000e+000.000e+001.051e-01 1281.024e-021.218e-02429563100.000.000.00
10.000e+000.000e+009.901e-02 1281.102e-021.353e-02429560100.000.000.00
20.000e+000.000e+001.050e-01 1281.092e-021.350e-0242630897.660.002.34
30.000e+000.000e+000.000e+00 00.000e+000.000e+00 00.000.000.00
40.000e+000.000e+000.000e+00 00.000e+000.000e+00 00.000.000.00
50.000e+000.000e+000.000e+00 00.000e+000.000e+00 00.000.000.00
60.000e+000.000e+000.000e+00 00.000e+000.000e+00 00.000.000.00
70.000e+000.000e+000.000e+00 00.000e+000.000e+00 00.000.000.00
AVG0.000e+000.000e+003.864e-02 484.023e-034.900e-0316067837.210.000.29

When looking at Monitor Stars

slotrms_ra_err (deg)rms_dec_err (deg) rms_delta_mag (marcsec)number avg_angynea (arcsec)avg_angznea (arcsec) number_nea goodmarginalbad
00.000e+000.000e+000.000e+00 00.000e+000.000e+00 00.000.000.00
10.000e+000.000e+000.000e+00 00.000e+000.000e+00 00.000.000.00
20.000e+000.000e+000.000e+00 00.000e+000.000e+00 00.000.000.00
30.000e+000.000e+000.000e+00 00.000e+000.000e+00 00.000.000.00
40.000e+000.000e+000.000e+00 00.000e+000.000e+00 00.000.000.00
50.000e+000.000e+000.000e+00 00.000e+000.000e+00 00.000.000.00
60.000e+000.000e+000.000e+00 00.000e+000.000e+00 00.000.000.00
70.000e+000.000e+000.000e+00 00.000e+000.000e+00 00.000.000.00
AVG0.000e+000.000e+000.000e+00 00.000e+000.000e+00 00.000.000.00

If you have any questions about this page, please contact swolk@cfa.harvard.edu.