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ACA Trending: Jan 2026

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

ACIS
Slope: 1.314e-03 STD: 5.834e-02

Slope: 6.715e-04 STD: 5.340e-02

Slope: -6.940e-04 STD: 5.952e-02
 

Slope: -2.936e-04 STD: 5.204e-02

Slope: 3.176e-05 STD: 5.590e-02

Slope: -8.583e-04 STD: 7.906e-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 7.238 6.769 7.404 100 0 0 31
2 ACIS-2 7.107 6.545 7.257 100 0 0 65
3 ACIS-3 7.411 6.924 7.542 100 0 0 17
4 ACIS-4 7.224 6.703 7.356 100 0 0 64
5 ACIS-5 7.227 6.495 7.394 100 0 0 91
6 ACIS-6 7.316 6.656 7.520 100 0 0 38
7 HRC-I-1 6.796 6.724 6.827 100 0 0 2
8 HRC-I-2 0.000 0.000 0.000 0 0 0 0
9 HRC-I-3 6.867 6.504 6.889 100 0 0 2
10 HRC-I-4 6.798 6.771 6.822 100 0 0 2
11 HRC-S-1 6.788 6.773 6.806 100 0 0 1
12 HRC-S-2 6.808 6.760 6.821 100 0 0 1
13 HRC-S-3 0.000 0.000 0.000 0 0 0 0
14 HRC-S-4 6.809 6.793 6.826 100 0 0 1

Level 1 Slot Trending: Jan 2026

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

SlotPos_ErrDelta MagnitudeAngyneaAngznea
0
Slope: -9.323e-04 STD: 7.594e-02

Slope: -9.323e-04 STD: 7.594e-02

Slope: 2.938e-07 STD: 5.776e-06

Slope: 5.776e-06 STD: 8.300e-04
1
Slope: 3.385e-04 STD: 5.111e-02

Slope: 3.385e-04 STD: 5.111e-02

Slope: 2.100e-06 STD: 1.694e-05

Slope: 1.694e-05 STD: 7.656e-04
2
Slope: 5.921e-04 STD: 7.624e-02

Slope: 5.921e-04 STD: 7.624e-02

Slope: -4.547e-06 STD: 2.070e-05

Slope: 2.070e-05 STD: 6.575e-04
3
Slope: 1.175e-04 STD: 2.277e-02

Slope: 1.175e-04 STD: 2.277e-02

Slope: 8.983e-05 STD: 1.628e-05

Slope: 1.628e-05 STD: 7.435e-03
4
Slope: 6.754e-04 STD: 2.816e-02

Slope: 6.754e-04 STD: 2.816e-02

Slope: -2.412e-05 STD: -2.387e-05

Slope: -2.387e-05 STD: 7.394e-03
5
Slope: 4.095e-05 STD: 1.579e-02

Slope: 4.095e-05 STD: 1.579e-02

Slope: 5.840e-05 STD: -4.892e-06

Slope: -4.892e-06 STD: 1.052e-02
6
Slope: -2.544e-04 STD: 2.261e-02

Slope: -2.544e-04 STD: 2.261e-02

Slope: -8.454e-05 STD: -3.938e-05

Slope: -3.938e-05 STD: 1.365e-02
7
Slope: -8.687e-05 STD: 2.324e-02

Slope: -8.687e-05 STD: 2.324e-02

Slope: -1.679e-04 STD: -2.014e-04

Slope: -2.014e-04 STD: 1.480e-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
31.738e-052.013e-057.572e-03 863.316e-023.358e-02412806100.000.000.00
42.078e-052.133e-058.254e-03 863.830e-023.871e-02412785100.000.000.00
51.926e-052.243e-058.412e-03 854.461e-024.613e-02412800100.000.000.00
61.937e-052.170e-058.709e-03 855.060e-025.287e-02412673100.000.000.00
72.038e-052.079e-058.799e-03 835.480e-025.860e-02412743100.000.000.00
AVG1.215e-051.330e-055.218e-03 532.768e-022.874e-0225797562.500.000.00

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+001.149e-01 1051.005e-021.142e-02412808100.000.000.00
10.000e+000.000e+001.095e-01 1051.087e-021.297e-02412814100.000.000.00
20.000e+000.000e+001.076e-01 1051.098e-021.324e-02412808100.000.000.00
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+004.150e-02 393.987e-034.705e-0315480337.500.000.00

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.