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ACA Trending: Mar 2026

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

ACIS
Slope: -2.863e-03 STD: 4.352e-02

Slope: -1.030e-02 STD: 7.300e-02

Slope: -9.338e-03 STD: 5.766e-02
 

Slope: -7.735e-03 STD: 5.247e-02

Slope: -4.652e-03 STD: 5.012e-02

Slope: -2.033e-03 STD: 6.561e-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 7.254 6.480 7.360 100 0 0 33
2 ACIS-2 7.126 6.428 7.266 100 0 0 29
3 ACIS-3 7.389 6.863 7.520 100 0 0 6
4 ACIS-4 7.217 6.382 7.341 100 0 0 34
5 ACIS-5 7.215 5.755 7.352 100 0 0 60
6 ACIS-6 7.249 6.665 7.493 100 0 0 48
7 HRC-I-1 6.811 6.794 6.827 100 0 0 1
8 HRC-I-2 0.000 0.000 0.000 0 0 0 0
9 HRC-I-3 6.887 6.873 6.899 100 0 0 1
10 HRC-I-4 6.829 6.806 6.840 100 0 0 1
11 HRC-S-1 6.840 6.821 6.857 100 0 0 1
12 HRC-S-2 6.837 6.825 6.850 100 0 0 1
13 HRC-S-3 6.881 6.869 6.895 100 0 0 1
14 HRC-S-4 0.000 0.000 0.000 0 0 0 0

Level 1 Slot Trending: Mar 2026

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

SlotPos_ErrDelta MagnitudeAngyneaAngznea
0
Slope: nan STD: 8.500e-02

Slope: nan STD: 8.500e-02

Slope: -6.562e-05 STD: -1.139e-04

Slope: -1.139e-04 STD: 1.502e-03
1
Slope: nan STD: 1.900e-02

Slope: nan STD: 1.900e-02

Slope: -5.566e-05 STD: -9.781e-05

Slope: -9.781e-05 STD: 1.393e-03
2
Slope: nan STD: 1.850e-02

Slope: nan STD: 1.850e-02

Slope: 2.045e-06 STD: -4.598e-06

Slope: -4.598e-06 STD: 8.080e-04
3
Slope: 4.682e-04 STD: 1.700e-02

Slope: 4.682e-04 STD: 1.700e-02

Slope: -2.350e-04 STD: -3.353e-04

Slope: -3.353e-04 STD: 6.311e-03
4
Slope: 6.626e-04 STD: 1.510e-02

Slope: 6.626e-04 STD: 1.510e-02

Slope: 5.259e-05 STD: 3.254e-05

Slope: 3.254e-05 STD: 9.715e-03
5
Slope: -5.329e-04 STD: 1.092e-02

Slope: -5.329e-04 STD: 1.092e-02

Slope: 8.022e-04 STD: 7.990e-04

Slope: 7.990e-04 STD: 1.259e-02
6
Slope: 5.593e-04 STD: 1.193e-02

Slope: 5.593e-04 STD: 1.193e-02

Slope: 7.874e-04 STD: 9.818e-04

Slope: 9.818e-04 STD: 1.335e-02
7
Slope: 1.052e-03 STD: 2.049e-02

Slope: 1.052e-03 STD: 2.049e-02

Slope: 5.252e-04 STD: 6.194e-04

Slope: 6.194e-04 STD: 1.374e-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
32.048e-051.846e-057.440e-03 693.352e-023.350e-02240364100.000.000.00
41.904e-052.084e-058.375e-03 693.882e-023.959e-02240341100.000.000.00
52.111e-051.891e-058.343e-03 694.548e-024.660e-02240337100.000.000.00
62.066e-052.157e-059.094e-03 694.839e-025.008e-02240338100.000.000.00
71.772e-051.893e-058.454e-03 695.183e-025.366e-02240343100.000.000.00
AVG1.238e-051.234e-055.213e-03 432.726e-022.793e-0215021562.500.000.00

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+001.352e-01 721.062e-021.295e-02240331100.000.000.00
10.000e+000.000e+001.331e-01 721.136e-021.403e-02240365100.000.000.00
20.000e+000.000e+001.320e-01 721.078e-021.301e-02240368100.000.000.00
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+005.005e-02 274.094e-035.000e-039013337.500.000.00

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.