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ACA Trending: Apr 2026

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

ACIS
Slope: 4.351e-02 STD: 6.388e-02

Slope: -1.087e-02 STD: 7.966e-02

Slope: -1.812e-02 STD: 4.791e-02
 

Slope: 6.293e-03 STD: 6.104e-02

Slope: 5.170e-03 STD: 7.217e-02

Slope: -2.661e-02 STD: 6.535e-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 7.241 6.914 7.330 100 0 0 7
2 ACIS-2 7.093 4.995 7.229 100 0 0 24
3 ACIS-3 7.391 7.129 7.477 100 0 0 13
4 ACIS-4 7.175 6.958 7.324 100 0 0 21
5 ACIS-5 7.189 6.874 7.314 100 0 0 24
6 ACIS-6 7.292 6.117 7.412 100 0 0 7
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: Apr 2026

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

SlotPos_ErrDelta MagnitudeAngyneaAngznea
0
Slope: nan STD: nan

Slope: nan STD: nan

Slope: -2.399e-04 STD: -7.946e-04

Slope: -7.946e-04 STD: 1.665e-03
1
Slope: nan STD: nan

Slope: nan STD: nan

Slope: 7.006e-05 STD: 9.874e-05

Slope: 9.874e-05 STD: 9.291e-04
2
Slope: nan STD: nan

Slope: nan STD: nan

Slope: -1.286e-04 STD: -2.917e-04

Slope: -2.917e-04 STD: 1.256e-03
3
Slope: -4.844e-03 STD: 3.555e-02

Slope: -4.844e-03 STD: 3.555e-02

Slope: -1.824e-04 STD: -1.242e-03

Slope: -1.242e-03 STD: 5.703e-03
4
Slope: -2.498e-03 STD: 9.605e-03

Slope: -2.498e-03 STD: 9.605e-03

Slope: 6.876e-04 STD: 2.066e-04

Slope: 2.066e-04 STD: 5.347e-03
5
Slope: 7.329e-04 STD: 2.828e-02

Slope: 7.329e-04 STD: 2.828e-02

Slope: 2.393e-04 STD: -1.123e-04

Slope: -1.123e-04 STD: 5.718e-03
6
Slope: -1.122e-03 STD: 3.076e-02

Slope: -1.122e-03 STD: 3.076e-02

Slope: 2.143e-03 STD: 1.045e-03

Slope: 1.045e-03 STD: 1.200e-02
7
Slope: -2.638e-03 STD: 1.630e-02

Slope: -2.638e-03 STD: 1.630e-02

Slope: 2.529e-03 STD: 2.385e-03

Slope: 2.385e-03 STD: 2.316e-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
34.014e-052.718e-051.268e-02 323.334e-023.181e-02106358100.000.000.00
44.032e-053.038e-051.295e-02 323.865e-023.749e-02106327100.000.000.00
53.774e-052.363e-051.224e-02 324.234e-024.224e-02106356100.000.000.00
64.102e-052.234e-051.294e-02 324.595e-024.675e-02106359100.000.000.00
73.629e-052.760e-051.396e-02 295.210e-025.478e-02106242100.000.000.00
AVG2.444e-051.639e-058.096e-03 192.655e-022.663e-026645562.500.000.00

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+002.138e-01 321.093e-021.384e-02106352100.000.000.00
10.000e+000.000e+001.909e-01 321.106e-021.347e-02106353100.000.000.00
20.000e+000.000e+002.021e-01 321.114e-021.409e-02106360100.000.000.00
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+007.585e-02 124.141e-035.176e-033988337.500.000.00

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.