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ACA Trending: Apr 2026

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

ACIS
Slope: 1.157e-03 STD: 5.802e-02

Slope: 3.923e-04 STD: 5.879e-02

Slope: 1.753e-03 STD: 7.421e-02
 

Slope: 1.491e-03 STD: 5.123e-02

Slope: 1.130e-03 STD: 6.079e-02

Slope: 1.882e-03 STD: 5.956e-02
 
HRCI
Slope: -2.643e-03 STD: 9.610e-03

Slope: -3.307e-03 STD: 1.197e-02

Slope: -2.342e-03 STD: 9.594e-03

Slope: nan STD: nan
HRCS
Slope: nan STD: nan

Slope: nan STD: nan

Slope: nan STD: nan

Slope: nan STD: nan
IDID StringMagnitudeData Quality (%)Total Data
AverageMinMaxGoodMarginalBad
1 ACIS-1 7.266 6.914 7.395 100 0 0 26
2 ACIS-2 7.102 4.995 7.287 100 0 0 82
3 ACIS-3 7.402 6.740 7.590 100 0 0 35
4 ACIS-4 7.204 6.415 7.376 100 0 0 84
5 ACIS-5 7.213 6.652 7.370 100 0 0 97
6 ACIS-6 7.330 6.117 7.461 100 0 0 27
7 HRC-I-1 6.793 6.754 6.829 100 0 0 4
8 HRC-I-2 6.825 6.767 6.859 100 0 0 3
9 HRC-I-3 6.868 6.810 6.900 100 0 0 4
10 HRC-I-4 6.794 6.775 6.808 100 0 0 1
11 HRC-S-1 0.000 0.000 0.000 0 0 0 0
12 HRC-S-2 0.000 0.000 0.000 0 0 0 0
13 HRC-S-3 0.000 0.000 0.000 0 0 0 0
14 HRC-S-4 0.000 0.000 0.000 0 0 0 0

Level 1 Slot Trending: Apr 2026

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

SlotPos_ErrDelta MagnitudeAngyneaAngznea
0
Slope: -6.154e-03 STD: 1.705e-01

Slope: -6.154e-03 STD: 1.705e-01

Slope: -2.353e-05 STD: -7.622e-05

Slope: -7.622e-05 STD: 1.257e-03
1
Slope: -1.700e-02 STD: 1.910e-01

Slope: -1.700e-02 STD: 1.910e-01

Slope: 2.464e-07 STD: -1.201e-05

Slope: -1.201e-05 STD: 9.906e-04
2
Slope: -1.209e-03 STD: 1.658e-01

Slope: -1.209e-03 STD: 1.658e-01

Slope: -6.214e-06 STD: -3.068e-05

Slope: -3.068e-05 STD: 9.836e-04
3
Slope: -4.280e-04 STD: 4.662e-02

Slope: -4.280e-04 STD: 4.662e-02

Slope: 1.123e-04 STD: 6.655e-05

Slope: 6.655e-05 STD: 8.295e-03
4
Slope: 4.078e-04 STD: 1.560e-02

Slope: 4.078e-04 STD: 1.560e-02

Slope: 9.467e-05 STD: 1.808e-05

Slope: 1.808e-05 STD: 8.989e-03
5
Slope: -6.082e-05 STD: 2.656e-02

Slope: -6.082e-05 STD: 2.656e-02

Slope: 1.560e-04 STD: 8.043e-05

Slope: 8.043e-05 STD: 8.765e-03
6
Slope: -3.597e-04 STD: 2.655e-02

Slope: -3.597e-04 STD: 2.655e-02

Slope: 9.518e-05 STD: 5.372e-05

Slope: 5.372e-05 STD: 1.167e-02
7
Slope: 6.483e-04 STD: 4.683e-02

Slope: 6.483e-04 STD: 4.683e-02

Slope: 3.679e-04 STD: 2.520e-04

Slope: 2.520e-04 STD: 3.657e-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
31.945e-051.508e-057.526e-03 1103.618e-023.411e-02465579100.000.000.00
41.898e-051.601e-056.722e-03 1134.114e-023.888e-02465513100.000.000.00
51.903e-051.529e-056.934e-03 1134.587e-024.528e-02465550100.000.000.00
61.962e-051.690e-057.296e-03 1135.031e-025.053e-02465547100.000.000.00
71.893e-051.880e-058.325e-03 1066.092e-026.098e-02465350100.000.000.00
AVG1.200e-051.026e-054.600e-03 692.930e-022.872e-0229094262.500.000.00

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+001.092e-01 1211.028e-021.191e-02465571100.000.000.00
10.000e+000.000e+001.004e-01 1211.090e-021.309e-02465570100.000.000.00
20.000e+000.000e+001.019e-01 1211.099e-021.335e-02465584100.000.000.00
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+003.895e-02 454.022e-034.794e-0317459037.500.000.00

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.