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ACA Trending: Jan 2026

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

ACIS
Slope: -6.996e-04 STD: 4.961e-02

Slope: 1.649e-03 STD: 5.358e-02

Slope: -2.487e-03 STD: 4.016e-02
 

Slope: 5.523e-04 STD: 5.143e-02

Slope: -2.532e-04 STD: 5.075e-02

Slope: 9.536e-06 STD: 8.583e-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 7.218 6.780 7.352 100 0 0 17
2 ACIS-2 7.106 6.545 7.244 100 0 0 41
3 ACIS-3 7.421 7.284 7.522 100 0 0 7
4 ACIS-4 7.225 6.939 7.356 100 0 0 42
5 ACIS-5 7.222 6.495 7.363 100 0 0 55
6 ACIS-6 7.311 7.003 7.500 100 0 0 18
7 HRC-I-1 6.798 6.757 6.827 100 0 0 1
8 HRC-I-2 0.000 0.000 0.000 0 0 0 0
9 HRC-I-3 6.868 6.504 6.889 100 0 0 1
10 HRC-I-4 6.797 6.777 6.820 100 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: Jan 2026

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

SlotPos_ErrDelta MagnitudeAngyneaAngznea
0
Slope: -1.200e-02 STD: 7.765e-02

Slope: -1.200e-02 STD: 7.765e-02

Slope: -1.391e-05 STD: -1.793e-05

Slope: -1.793e-05 STD: 8.348e-04
1
Slope: -1.517e-03 STD: 5.232e-02

Slope: -1.517e-03 STD: 5.232e-02

Slope: 1.030e-05 STD: -3.054e-08

Slope: -3.054e-08 STD: 6.526e-04
2
Slope: -1.167e-02 STD: 8.942e-02

Slope: -1.167e-02 STD: 8.942e-02

Slope: -2.473e-05 STD: 2.256e-05

Slope: 2.256e-05 STD: 5.925e-04
3
Slope: -1.664e-04 STD: 1.688e-02

Slope: -1.664e-04 STD: 1.688e-02

Slope: -4.537e-05 STD: -9.446e-05

Slope: -9.446e-05 STD: 7.125e-03
4
Slope: 4.219e-04 STD: 2.375e-02

Slope: 4.219e-04 STD: 2.375e-02

Slope: -2.852e-05 STD: -8.866e-05

Slope: -8.866e-05 STD: 7.936e-03
5
Slope: -2.390e-04 STD: 1.877e-02

Slope: -2.390e-04 STD: 1.877e-02

Slope: 6.689e-05 STD: -1.273e-04

Slope: -1.273e-04 STD: 1.058e-02
6
Slope: 5.450e-05 STD: 2.714e-02

Slope: 5.450e-05 STD: 2.714e-02

Slope: -3.189e-04 STD: -2.832e-04

Slope: -2.832e-04 STD: 1.405e-02
7
Slope: 1.407e-03 STD: 2.827e-02

Slope: 1.407e-03 STD: 2.827e-02

Slope: -8.387e-05 STD: -2.726e-04

Slope: -2.726e-04 STD: 1.701e-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
31.951e-052.351e-059.755e-03 513.244e-023.333e-02245696100.000.000.00
42.513e-052.668e-051.113e-02 513.819e-023.883e-02245676100.000.000.00
52.173e-052.837e-051.108e-02 514.419e-024.604e-02245693100.000.000.00
62.377e-052.407e-051.113e-02 515.039e-025.241e-02245588100.000.000.00
72.563e-052.851e-051.123e-02 495.521e-025.973e-02245653100.000.000.00
AVG1.447e-051.639e-056.790e-03 312.755e-022.879e-0215353862.500.000.00

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+001.517e-01 619.952e-031.124e-02245699100.000.000.00
10.000e+000.000e+001.441e-01 611.077e-021.268e-02245705100.000.000.00
20.000e+000.000e+001.413e-01 611.089e-021.307e-02245698100.000.000.00
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+005.464e-02 223.950e-034.624e-039213737.500.000.00

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.