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ACA Trending: Aug 2026

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

ACIS
Slope: 5.165e-04 STD: 5.383e-02

Slope: 1.611e-04 STD: 5.529e-02

Slope: -9.572e-04 STD: 6.401e-02
 

Slope: 5.103e-04 STD: 4.592e-02

Slope: -3.121e-04 STD: 5.068e-02

Slope: 3.760e-03 STD: 7.829e-02
 
HRCI
Slope: 6.184e-04 STD: 8.986e-03

Slope: -6.907e-04 STD: 1.110e-02

Slope: -1.513e-03 STD: 1.370e-02

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

Slope: nan STD: nan

Slope: nan STD: nan

Slope: 1.366e-02 STD: 1.397e-02
IDID StringMagnitudeData Quality (%)Total Data
AverageMinMaxGoodMarginalBad
1 ACIS-1 7.234 6.518 7.404 100 0 0 38
2 ACIS-2 7.081 5.920 7.325 100 0 0 59
3 ACIS-3 7.390 7.048 7.592 100 0 0 30
4 ACIS-4 7.192 5.262 7.359 100 0 0 64
5 ACIS-5 7.195 6.526 7.382 100 0 0 88
6 ACIS-6 7.310 5.762 7.502 100 0 0 21
7 HRC-I-1 6.797 6.729 6.828 100 0 0 8
8 HRC-I-2 6.836 6.759 6.876 100 0 0 9
9 HRC-I-3 6.860 6.757 6.913 100 0 0 9
10 HRC-I-4 6.796 6.775 6.813 100 0 0 1
11 HRC-S-1 6.808 6.765 6.844 100 0 0 2
12 HRC-S-2 6.815 6.773 6.827 100 0 0 2
13 HRC-S-3 6.851 6.779 6.879 100 0 0 2
14 HRC-S-4 6.810 6.777 6.835 100 0 0 3

Level 1 Slot Trending: Aug 2026

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

SlotPos_ErrDelta MagnitudeAngyneaAngznea
0
Slope: 1.292e-02 STD: 1.641e-01

Slope: 1.292e-02 STD: 1.641e-01

Slope: -6.303e-06 STD: 4.231e-06

Slope: 4.231e-06 STD: 1.219e-03
1
Slope: 1.491e-02 STD: 1.580e-01

Slope: 1.491e-02 STD: 1.580e-01

Slope: -2.320e-05 STD: -2.979e-05

Slope: -2.979e-05 STD: 1.607e-03
2
Slope: 9.691e-03 STD: 1.511e-01

Slope: 9.691e-03 STD: 1.511e-01

Slope: 6.848e-06 STD: 2.261e-05

Slope: 2.261e-05 STD: 1.350e-03
3
Slope: 1.334e-03 STD: 4.728e-02

Slope: 1.334e-03 STD: 4.728e-02

Slope: 6.266e-05 STD: -9.356e-05

Slope: -9.356e-05 STD: 1.074e-02
4
Slope: -7.561e-05 STD: 2.086e-02

Slope: -7.561e-05 STD: 2.086e-02

Slope: -1.083e-04 STD: -8.387e-05

Slope: -8.387e-05 STD: 1.080e-02
5
Slope: -1.233e-04 STD: 3.069e-02

Slope: -1.233e-04 STD: 3.069e-02

Slope: 5.453e-05 STD: 7.170e-05

Slope: 7.170e-05 STD: 1.137e-02
6
Slope: -2.622e-04 STD: 2.783e-02

Slope: -2.622e-04 STD: 2.783e-02

Slope: 4.172e-06 STD: 1.487e-05

Slope: 1.487e-05 STD: 1.509e-02
7
Slope: -3.572e-05 STD: 2.435e-02

Slope: -3.572e-05 STD: 2.435e-02

Slope: 5.526e-05 STD: 2.579e-05

Slope: 2.579e-05 STD: 2.349e-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
31.949e-052.178e-057.241e-03 973.741e-023.204e-02453126100.000.000.00
41.762e-052.063e-057.367e-03 984.274e-023.831e-02453095100.000.000.00
51.759e-051.988e-057.460e-03 984.755e-024.441e-02453097100.000.000.00
61.799e-052.029e-057.978e-03 965.312e-025.079e-02453062100.000.000.00
71.898e-051.838e-057.686e-03 925.842e-025.710e-02449489100.000.000.00
AVG1.146e-051.262e-054.717e-03 602.991e-022.783e-0228273362.500.000.00

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+001.163e-01 1129.928e-031.148e-02453131100.000.000.00
10.000e+000.000e+001.088e-01 1121.092e-021.295e-02453132100.000.000.00
20.000e+000.000e+001.109e-01 1121.078e-021.298e-02453102100.000.000.00
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+004.199e-02 423.953e-034.677e-0316992037.500.000.00

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
71.186e-043.516e-056.521e+00 20.000e+000.000e+00 0100.000.000.00
AVG1.482e-054.395e-068.151e-01 00.000e+000.000e+00 012.500.000.00

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