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ACA Trending: Aug 2026

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

ACIS
Slope: 1.544e-03 STD: 5.596e-02

Slope: 1.323e-04 STD: 5.188e-02

Slope: 1.242e-03 STD: 6.388e-02
 

Slope: 8.086e-04 STD: 4.312e-02

Slope: -1.256e-04 STD: 4.663e-02

Slope: 4.051e-03 STD: 7.886e-02
 
HRCI
Slope: 2.127e-03 STD: 1.021e-02

Slope: -2.131e-03 STD: 1.185e-02

Slope: -4.109e-03 STD: 1.384e-02

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 7.236 6.518 7.404 100 0 0 32
2 ACIS-2 7.079 5.920 7.325 100 0 0 47
3 ACIS-3 7.399 7.048 7.592 100 0 0 24
4 ACIS-4 7.191 5.262 7.359 100 0 0 52
5 ACIS-5 7.196 6.526 7.382 100 0 0 75
6 ACIS-6 7.304 5.762 7.502 100 0 0 19
7 HRC-I-1 6.796 6.729 6.828 100 0 0 6
8 HRC-I-2 6.838 6.771 6.876 100 0 0 7
9 HRC-I-3 6.863 6.784 6.913 100 0 0 7
10 HRC-I-4 6.796 6.775 6.813 100 0 0 1
11 HRC-S-1 6.785 6.765 6.802 100 0 0 1
12 HRC-S-2 6.813 6.773 6.825 100 0 0 1
13 HRC-S-3 6.851 6.779 6.879 100 0 0 2
14 HRC-S-4 6.805 6.777 6.835 100 0 0 2

Level 1 Slot Trending: Aug 2026

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

SlotPos_ErrDelta MagnitudeAngyneaAngznea
0
Slope: 4.822e-03 STD: 1.020e-01

Slope: 4.822e-03 STD: 1.020e-01

Slope: -1.930e-05 STD: -1.869e-05

Slope: -1.869e-05 STD: 1.302e-03
1
Slope: 7.315e-03 STD: 7.355e-02

Slope: 7.315e-03 STD: 7.355e-02

Slope: -3.563e-05 STD: -4.827e-05

Slope: -4.827e-05 STD: 1.628e-03
2
Slope: -1.211e-03 STD: 6.749e-02

Slope: -1.211e-03 STD: 6.749e-02

Slope: -5.066e-06 STD: 1.505e-05

Slope: 1.505e-05 STD: 1.349e-03
3
Slope: 1.892e-03 STD: 4.477e-02

Slope: 1.892e-03 STD: 4.477e-02

Slope: 2.545e-04 STD: -1.133e-05

Slope: -1.133e-05 STD: 1.028e-02
4
Slope: -2.162e-04 STD: 2.224e-02

Slope: -2.162e-04 STD: 2.224e-02

Slope: 1.059e-04 STD: -1.509e-05

Slope: -1.509e-05 STD: 1.116e-02
5
Slope: 1.528e-04 STD: 3.329e-02

Slope: 1.528e-04 STD: 3.329e-02

Slope: 2.783e-04 STD: 2.886e-04

Slope: 2.886e-04 STD: 1.142e-02
6
Slope: -1.482e-04 STD: 3.017e-02

Slope: -1.482e-04 STD: 3.017e-02

Slope: 2.761e-04 STD: 2.612e-04

Slope: 2.612e-04 STD: 1.588e-02
7
Slope: -7.304e-05 STD: 2.612e-02

Slope: -7.304e-05 STD: 2.612e-02

Slope: 3.588e-04 STD: 2.512e-04

Slope: 2.512e-04 STD: 2.510e-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
32.202e-052.401e-057.957e-03 793.842e-023.288e-02375021100.000.000.00
42.008e-052.216e-058.229e-03 804.401e-023.906e-02374993100.000.000.00
52.028e-052.228e-058.237e-03 804.856e-024.516e-02374992100.000.000.00
62.037e-052.145e-058.830e-03 785.418e-025.169e-02374956100.000.000.00
72.206e-052.099e-058.600e-03 755.906e-025.737e-02371421100.000.000.00
AVG1.310e-051.386e-055.232e-03 493.053e-022.827e-0223392262.500.000.00

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+001.278e-01 929.910e-031.147e-02375026100.000.000.00
10.000e+000.000e+001.195e-01 921.092e-021.299e-02375031100.000.000.00
20.000e+000.000e+001.218e-01 921.074e-021.294e-02375000100.000.000.00
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+004.613e-02 343.947e-034.674e-0314063237.500.000.00

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.