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ACA Trending: Aug 2026

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

ACIS
Slope: 6.791e-03 STD: 5.563e-02

Slope: -3.225e-03 STD: 6.154e-02

Slope: -3.813e-03 STD: 5.075e-02
 

Slope: -1.696e-03 STD: 4.295e-02

Slope: 6.364e-04 STD: 4.698e-02

Slope: 3.721e-03 STD: 7.461e-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 7.228 6.518 7.353 100 0 0 17
2 ACIS-2 7.081 6.850 7.325 100 0 0 19
3 ACIS-3 7.389 7.097 7.480 100 0 0 8
4 ACIS-4 7.188 5.262 7.350 100 0 0 25
5 ACIS-5 7.201 6.839 7.335 100 0 0 34
6 ACIS-6 7.284 5.762 7.441 100 0 0 14
7 HRC-I-1 0.000 0.000 0.000 0 0 0 0
8 HRC-I-2 0.000 0.000 0.000 0 0 0 0
9 HRC-I-3 0.000 0.000 0.000 0 0 0 0
10 HRC-I-4 0.000 0.000 0.000 0 0 0 0
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: Aug 2026

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

SlotPos_ErrDelta MagnitudeAngyneaAngznea
0
Slope: -3.234e-03 STD: 1.077e-01

Slope: -3.234e-03 STD: 1.077e-01

Slope: 7.068e-06 STD: -4.194e-05

Slope: -4.194e-05 STD: 8.628e-04
1
Slope: 1.610e-02 STD: 5.410e-02

Slope: 1.610e-02 STD: 5.410e-02

Slope: 2.029e-06 STD: -1.901e-05

Slope: -1.901e-05 STD: 8.513e-04
2
Slope: -4.262e-03 STD: 7.046e-02

Slope: -4.262e-03 STD: 7.046e-02

Slope: 5.079e-06 STD: 3.841e-05

Slope: 3.841e-05 STD: 4.757e-04
3
Slope: 1.271e-03 STD: 1.517e-02

Slope: 1.271e-03 STD: 1.517e-02

Slope: 2.351e-04 STD: -2.924e-04

Slope: -2.924e-04 STD: 8.398e-03
4
Slope: -1.142e-03 STD: 1.353e-02

Slope: -1.142e-03 STD: 1.353e-02

Slope: 1.036e-03 STD: 5.866e-04

Slope: 5.866e-04 STD: 1.106e-02
5
Slope: -2.483e-03 STD: 3.605e-02

Slope: -2.483e-03 STD: 3.605e-02

Slope: 1.305e-03 STD: 1.025e-03

Slope: 1.025e-03 STD: 1.061e-02
6
Slope: -1.110e-03 STD: 1.355e-02

Slope: -1.110e-03 STD: 1.355e-02

Slope: 1.762e-03 STD: 1.492e-03

Slope: 1.492e-03 STD: 1.406e-02
7
Slope: -6.416e-04 STD: 9.706e-03

Slope: -6.416e-04 STD: 9.706e-03

Slope: 1.254e-03 STD: 1.141e-03

Slope: 1.141e-03 STD: 2.295e-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
32.487e-053.904e-051.182e-02 333.681e-023.361e-02160104100.000.000.00
42.484e-053.366e-051.192e-02 334.290e-023.966e-02160079100.000.000.00
52.382e-053.532e-051.356e-02 334.566e-024.303e-02160108100.000.000.00
62.780e-053.812e-051.242e-02 335.082e-024.899e-02160099100.000.000.00
72.627e-052.924e-051.310e-02 315.722e-025.698e-02160000100.000.000.00
AVG1.595e-052.192e-057.851e-03 202.917e-022.778e-0210004862.500.000.00

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+001.890e-01 391.000e-021.166e-02160103100.000.000.00
10.000e+000.000e+001.781e-01 391.095e-021.314e-02160108100.000.000.00
20.000e+000.000e+001.795e-01 391.070e-021.291e-02160094100.000.000.00
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+006.833e-02 143.957e-034.714e-036003837.500.000.00

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.