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ACA Trending: Oct 2026

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

ACIS
Slope: -5.972e-03 STD: 5.593e-02

Slope: -1.551e-02 STD: 9.709e-02

Slope: -7.315e-03 STD: 5.737e-02
 

Slope: -8.159e-03 STD: 7.112e-02

Slope: -8.000e-03 STD: 6.518e-02

Slope: -2.454e-03 STD: 8.417e-02
 
HRCI
Slope: -4.482e-03 STD: 1.820e-02

Slope: -5.173e-03 STD: 2.166e-02

Slope: -4.798e-03 STD: 2.240e-02

Slope: nan STD: nan
HRCS
Slope: -2.411e-03 STD: 1.342e-02

Slope: -1.375e-03 STD: 1.201e-02

Slope: -1.844e-03 STD: 1.262e-02

Slope: nan STD: nan
IDID StringMagnitudeData Quality (%)Total Data
AverageMinMaxGoodMarginalBad
1 ACIS-1 7.227 6.838 7.370 100 0 0 38
2 ACIS-2 7.124 6.686 7.324 100 0 0 24
3 ACIS-3 7.401 7.001 7.548 100 0 0 25
4 ACIS-4 7.204 7.000 7.348 100 0 0 24
5 ACIS-5 7.195 6.367 7.358 100 0 0 56
6 ACIS-6 7.218 6.945 7.418 100 0 0 10
7 HRC-I-1 6.819 6.628 6.862 100 0 0 6
8 HRC-I-2 6.854 6.654 6.905 100 0 0 6
9 HRC-I-3 6.880 6.827 6.930 100 0 0 4
10 HRC-I-4 6.808 6.624 6.836 100 0 0 2
11 HRC-S-1 6.812 6.714 6.840 100 0 0 4
12 HRC-S-2 6.820 6.610 6.855 100 0 0 5
13 HRC-S-3 6.863 6.787 6.890 100 0 0 5
14 HRC-S-4 6.823 6.784 6.839 100 0 0 1

Level 1 Slot Trending: Oct 2026

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

SlotPos_ErrDelta MagnitudeAngyneaAngznea
0
Slope: nan STD: 8.957e-03

Slope: nan STD: 8.957e-03

Slope: -8.645e-05 STD: -1.771e-04

Slope: -1.771e-04 STD: 1.067e-03
1
Slope: nan STD: 9.174e-02

Slope: nan STD: 9.174e-02

Slope: -1.567e-04 STD: -2.896e-04

Slope: -2.896e-04 STD: 1.561e-03
2
Slope: nan STD: 1.682e-02

Slope: nan STD: 1.682e-02

Slope: -5.233e-05 STD: -6.349e-05

Slope: -6.349e-05 STD: 8.223e-04
3
Slope: 9.830e-04 STD: 1.570e-02

Slope: 9.830e-04 STD: 1.570e-02

Slope: -7.413e-05 STD: -1.049e-04

Slope: -1.049e-04 STD: 8.988e-03
4
Slope: -2.484e-04 STD: 2.054e-02

Slope: -2.484e-04 STD: 2.054e-02

Slope: -1.543e-04 STD: -2.327e-05

Slope: -2.327e-05 STD: 8.318e-03
5
Slope: 1.211e-03 STD: 1.700e-02

Slope: 1.211e-03 STD: 1.700e-02

Slope: -3.516e-04 STD: -4.090e-04

Slope: -4.090e-04 STD: 8.911e-03
6
Slope: 1.197e-03 STD: 4.324e-02

Slope: 1.197e-03 STD: 4.324e-02

Slope: -6.537e-04 STD: -7.025e-04

Slope: -7.025e-04 STD: 1.103e-02
7
Slope: -3.701e-04 STD: 1.557e-02

Slope: -3.701e-04 STD: 1.557e-02

Slope: -5.899e-05 STD: -2.497e-06

Slope: -2.497e-06 STD: 1.602e-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
31.960e-052.016e-056.001e-03 673.167e-023.030e-02233045100.000.000.00
41.652e-051.736e-057.616e-03 673.557e-023.442e-02233051100.000.000.00
51.958e-052.059e-057.897e-03 673.985e-023.974e-02233020100.000.000.00
61.568e-052.318e-051.045e-02 674.667e-024.769e-02232966100.000.000.00
71.614e-051.676e-058.616e-03 654.810e-025.051e-02229070100.000.000.00
AVG1.094e-051.226e-055.073e-03 412.523e-022.533e-0214514462.500.000.00

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+001.456e-01 701.013e-021.207e-02233038100.000.000.00
10.000e+000.000e+001.371e-01 701.106e-021.381e-02233038100.000.000.00
20.000e+000.000e+001.436e-01 701.049e-021.313e-02233050100.000.000.00
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+005.328e-02 263.959e-034.877e-038739037.500.000.00

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.