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ACA Trending: Apr 2026

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

ACIS
Slope: -2.589e-04 STD: 5.617e-02

Slope: 1.517e-03 STD: 5.977e-02

Slope: 4.195e-04 STD: 6.866e-02
 

Slope: 2.804e-03 STD: 5.212e-02

Slope: 2.063e-03 STD: 5.985e-02

Slope: 3.052e-03 STD: 5.882e-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 7.260 6.914 7.395 100 0 0 24
2 ACIS-2 7.105 4.995 7.287 100 0 0 75
3 ACIS-3 7.394 6.740 7.584 100 0 0 33
4 ACIS-4 7.207 6.415 7.376 100 0 0 76
5 ACIS-5 7.215 6.652 7.370 100 0 0 87
6 ACIS-6 7.333 6.117 7.461 100 0 0 26
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: 1.381e-02 STD: 1.748e-01

Slope: 1.381e-02 STD: 1.748e-01

Slope: -2.034e-05 STD: -8.030e-05

Slope: -8.030e-05 STD: 1.292e-03
1
Slope: -9.809e-03 STD: 1.879e-01

Slope: -9.809e-03 STD: 1.879e-01

Slope: -4.531e-06 STD: -1.540e-05

Slope: -1.540e-05 STD: 1.009e-03
2
Slope: 1.248e-02 STD: 1.758e-01

Slope: 1.248e-02 STD: 1.758e-01

Slope: -4.343e-06 STD: -3.571e-05

Slope: -3.571e-05 STD: 1.013e-03
3
Slope: -1.428e-04 STD: 4.648e-02

Slope: -1.428e-04 STD: 4.648e-02

Slope: 1.447e-04 STD: 8.641e-05

Slope: 8.641e-05 STD: 8.019e-03
4
Slope: 3.554e-04 STD: 1.573e-02

Slope: 3.554e-04 STD: 1.573e-02

Slope: 1.294e-04 STD: 4.739e-05

Slope: 4.739e-05 STD: 8.906e-03
5
Slope: -4.618e-04 STD: 2.301e-02

Slope: -4.618e-04 STD: 2.301e-02

Slope: 2.117e-04 STD: 9.959e-05

Slope: 9.959e-05 STD: 8.684e-03
6
Slope: -4.886e-04 STD: 2.750e-02

Slope: -4.886e-04 STD: 2.750e-02

Slope: 1.732e-04 STD: 8.969e-05

Slope: 8.969e-05 STD: 1.175e-02
7
Slope: 4.234e-04 STD: 4.713e-02

Slope: 4.234e-04 STD: 4.713e-02

Slope: 5.918e-04 STD: 4.326e-04

Slope: 4.326e-04 STD: 3.797e-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
32.052e-051.593e-057.702e-03 1013.586e-023.377e-02405848100.000.000.00
42.042e-051.722e-057.080e-03 1044.081e-023.873e-02405783100.000.000.00
52.034e-051.622e-057.239e-03 1044.550e-024.478e-02405820100.000.000.00
62.054e-051.799e-057.642e-03 1044.990e-024.994e-02405823100.000.000.00
71.963e-052.002e-058.861e-03 976.104e-026.083e-02405617100.000.000.00
AVG1.268e-051.092e-054.816e-03 632.914e-022.851e-0225361162.500.000.00

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+001.138e-01 1111.035e-021.207e-02405842100.000.000.00
10.000e+000.000e+001.049e-01 1111.090e-021.312e-02405842100.000.000.00
20.000e+000.000e+001.064e-01 1111.102e-021.339e-02405850100.000.000.00
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+004.064e-02 414.035e-034.822e-0315219137.500.000.00

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.