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ACA Trending: Mar 2026

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

ACIS
Slope: -9.875e-04 STD: 5.515e-02

Slope: -6.584e-03 STD: 6.781e-02

Slope: 5.650e-03 STD: 6.631e-02
 

Slope: -3.945e-03 STD: 4.906e-02

Slope: -1.694e-03 STD: 5.185e-02

Slope: -1.023e-03 STD: 6.708e-02
 
HRCI
Slope: nan STD: nan

Slope: nan STD: nan

Slope: nan STD: nan

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 7.252 6.480 7.360 100 0 0 52
2 ACIS-2 7.116 5.884 7.266 100 0 0 38
3 ACIS-3 7.430 6.863 7.527 100 0 0 16
4 ACIS-4 7.215 6.382 7.341 100 0 0 43
5 ACIS-5 7.214 5.755 7.352 100 0 0 88
6 ACIS-6 7.248 6.665 7.493 100 0 0 57
7 HRC-I-1 6.804 6.778 6.827 100 0 0 2
8 HRC-I-2 6.840 6.827 6.858 100 0 0 1
9 HRC-I-3 6.878 6.706 6.899 100 0 0 2
10 HRC-I-4 6.829 6.806 6.840 100 0 0 1
11 HRC-S-1 6.840 6.821 6.857 100 0 0 1
12 HRC-S-2 6.837 6.825 6.850 100 0 0 1
13 HRC-S-3 6.881 6.869 6.895 100 0 0 1
14 HRC-S-4 0.000 0.000 0.000 0 0 0 0

Level 1 Slot Trending: Mar 2026

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

SlotPos_ErrDelta MagnitudeAngyneaAngznea
0
Slope: 7.370e-03 STD: 6.684e-02

Slope: 7.370e-03 STD: 6.684e-02

Slope: -6.666e-05 STD: -1.358e-04

Slope: -1.358e-04 STD: 1.348e-03
1
Slope: -2.002e-03 STD: 2.798e-02

Slope: -2.002e-03 STD: 2.798e-02

Slope: -4.147e-05 STD: -8.377e-05

Slope: -8.377e-05 STD: 1.290e-03
2
Slope: -4.600e-04 STD: 3.335e-02

Slope: -4.600e-04 STD: 3.335e-02

Slope: -1.767e-06 STD: 5.150e-06

Slope: 5.150e-06 STD: 7.749e-04
3
Slope: -1.772e-04 STD: 3.095e-02

Slope: -1.772e-04 STD: 3.095e-02

Slope: -1.132e-04 STD: -1.694e-04

Slope: -1.694e-04 STD: 6.117e-03
4
Slope: 1.000e-03 STD: 2.216e-02

Slope: 1.000e-03 STD: 2.216e-02

Slope: -7.115e-05 STD: -5.578e-05

Slope: -5.578e-05 STD: 8.931e-03
5
Slope: 1.002e-03 STD: 5.241e-02

Slope: 1.002e-03 STD: 5.241e-02

Slope: 1.815e-04 STD: 1.594e-04

Slope: 1.594e-04 STD: 1.132e-02
6
Slope: 8.182e-04 STD: 3.156e-02

Slope: 8.182e-04 STD: 3.156e-02

Slope: 4.191e-04 STD: 5.169e-04

Slope: 5.169e-04 STD: 1.340e-02
7
Slope: 2.866e-04 STD: 1.876e-02

Slope: 2.866e-04 STD: 1.876e-02

Slope: 7.542e-04 STD: 8.790e-04

Slope: 8.790e-04 STD: 1.642e-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
31.889e-051.437e-057.087e-03 943.371e-023.378e-02310932100.000.000.00
41.739e-051.662e-057.083e-03 943.880e-023.981e-02310910100.000.000.00
51.951e-051.576e-058.231e-03 944.519e-024.633e-02310904100.000.000.00
62.026e-051.770e-057.951e-03 944.929e-025.124e-02310904100.000.000.00
71.700e-051.571e-057.251e-03 945.382e-025.591e-02310910100.000.000.00
AVG1.163e-051.002e-054.700e-03 582.760e-022.838e-0219432062.500.000.00

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+001.147e-01 1011.045e-021.255e-02310898100.000.000.00
10.000e+000.000e+001.109e-01 1011.128e-021.388e-02310936100.000.000.00
20.000e+000.000e+001.117e-01 1011.078e-021.305e-02310931100.000.000.00
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+004.216e-02 374.063e-034.935e-0311659537.500.000.00

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.