# uvot_fluxes_wget.pl vrs. 2024-08-27 fem at 250930d09h19m57s402742usUT
# /Home/eud/uvot_tdrss/perl/uvot_fluxes_wget.pl -seq=01351039001 -use_uvot -rebin -plot_mag -sens_corr -search_src_reg -wrk_dir=/data/uvot/swift_data/home/uvot_lc -web -useprev -zp_2011 -gamma=1.0 -use_filter_wtd=white v b u
# Current directory: /data/uvot/swift_data/home/uvot_lc
# ========= GRB250920C ===================
Could not find/read custom source region custom_1351039_src.reg
Used archived XRT position of 51.46554 -29.65536 4.00
Reference: GCN_Circulars-41922-Sat,_20_Sep_2025_22:43:48_+0000
The position is (03:25:51.73, -29:39:19.3)
Using source region:
# Region file format: DS9 version 3.0
# uvot_fluxes.pl xrt
global font="helvetica 12 bold" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source=1
fk5;circle(51.46554,-29.65536,4") # color=red dash=0
Source region spec. is: 51.46554 -29.65536 4"
Region file centered at (51.46554,-29.65536), which is (03:25:51.73, -29:39:19.3)
Could not find/read custom background region custom_1351039_bkg.reg
Made source region file with 5" aper with name uvot_flux_src5.reg
Coincidence losses are calculated using a 5" aperture.
Exposure times (t_exp) have NOT been corrected for coinc. loss, but rates and mags have been.
The no. of background pixels has been corrected by the ratio of coincidence loss corrections in the source and background regions.
The errors have been adjusted to account for the binomial distribution of counts at large rates.
A table entry starting with # is an exposure with no aspect solution.
A table entry starting with ! has no pixels in either source or background region.
A table entry starting with % is unreliable because it is not well inside the image.
Upper limits in tables give the 0.9987 confidence limit using Bayesian analysis for detection taking the observed counts into account.
Upper limits in plots give the 0.9772 confidence limit using Bayesian analysis.
Weighted rates in tables (wtd_rate) combine rates from different exposures weighted by the expected source rate divided by the background rate
The source is assumed to produce the same magnitude in all filters.
The source is assumed to decay as t**(-1.0), and the rate is normalized so that the white filter produces 1 cps at 1000 sec.
The Rebinned Data for All_files combine rates from different exposures weighted by the expected rate divided by the observed sigma squared.
A plot of these data is stored in uvot_fluxes_wtd_date.ps and .gif.
A zero point of 20.29 is adopted for weighting rates.
Subtract UTCF of -36.3628 from uncorrected trigger time of 780074717.42 in BAT summary file
# ============ Reading file sw01351039992uwh_sk.img ================
Use keyword TRIGTIME of 780074753.792 for trigger time.
Long-term sensitivity correction to zero point is -0.175 at 780074885
The processing date in extension 0 is: 2025-09-20T22:22:21
The trigger time is: 780074753.792. The reference is keyword in image file
Using zero point of 20.115 for filter WHITE
Use aperture correction of 1.035 based on aperture of 4.00
Using background region based on sources found in extension 1:
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(51.46554,-29.65536,25")
fk5;-circle(51.46554,-29.65536,12.5")
Ext Exposure t-trig coinc t_exp src pix bkg pix net_rate +/- mag UL sum_rate +/- mag UL sumexp wtd_rate +/- mag wt/t
1 wh780074884I 130.8 0.45 63.1 4743.1 199 4672 12670 170.044 2.873 14.54 14.5 170.0439 2.8731 14.54 14.5 63 32.554 0.550 16.51 2.023
above line uses coinc_corr_src: 0.450 corr_bkg: 0.976
2 wh780074884E 133.5 0.45 60.5 4522.9 200 4477 12657 169.113 2.921 14.54 14.5
above line uses coinc_corr_src: 0.450 corr_bkg: 0.976
Sum (T+ 131 to 195): 4743.1 73.4 (est. in src region) SNR_unwtd_sum: 59.18 0.9987 signif. UL: 14.48
0 63 780074917 162.9 32.1 -32.1 170.0439 2.8731 14.538 0.019 -0.018
Total wtd_rate (for all exposures so far): 32.554 +/- 0.480 snr: 67.8 mag: 16.51 UL: 16.29
# ============ Reading file sw01351039001uwh_sk.img ================
Use keyword TRIGTIME of 780074753.792 for trigger time.
Long-term sensitivity correction to zero point is -0.175 at 780076945
The processing date in extension 0 is: 2025-09-30T08:48:35
The trigger time is: 780074753.792. The reference is keyword in image file
Using zero point of 20.115 for filter WHITE
Use aperture correction of 1.035 based on aperture of 4.00
Using background region based on sources found in extension 1:
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(51.46554,-29.65536,25")
fk5;-circle(51.46554,-29.65536,12.5")
Ext Exposure t-trig coinc t_exp src pix bkg pix net_rate +/- mag UL sum_rate +/- mag UL sumexp wtd_rate +/- mag wt/t
1 wh780076944E 2190.8 0.89 19.5 263.9 198 4012 6131 8.048 0.981 17.85 17.5 8.0479 0.9808 17.85 17.5 19 20.812 2.536 16.99 0.052
above line uses coinc_corr_src: 0.888 corr_bkg: 0.933
Sum (T+ 2191 to 2211): 263.9 129.6 (est. in src region) SNR_unwtd_sum: 8.21 0.9987 signif. UL: 17.51
0 19 780076954 2200.7 9.9 -9.9 8.0479 0.9808 17.851 0.141 -0.125
Total wtd_rate (for all exposures so far): 32.540 +/- 0.480 snr: 67.9 mag: 16.51 UL: 16.29
Rebinned Data for sw01351039001uwh_sk.img using a zero point of 20.115:
No Exposure t-avg + / - net_rate +/- mag +/- t-avg sum_rate +/- mag +/- UL3
0 28.4 162.9 32.1 -32.1 170.0439 2.8731 14.54 0.02 162.9 170.0439 2.8731 14.54 0.02 14.48
1 17.3 2200.7 9.9 -9.9 8.0479 0.9808 17.85 0.12 933.4 108.7946 1.8249 15.02 0.02 14.97
=========================================================
================ Start New Filter V ==================
=========================================================
# ============ Reading file sw01351039992uvv_sk.img ================
Use keyword TRIGTIME of 780074753.792 for trigger time.
Long-term sensitivity correction to zero point is -0.230 at 780074865
The processing date in extension 0 is: 2025-09-20T22:22:19
The trigger time is: 780074753.792. The reference is keyword in image file
Using zero point of 17.660 for filter V
Use aperture correction of 1.030 based on aperture of 4.00
Using background region based on sources found in extension 1:
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(51.46554,-29.65536,25")
fk5;-circle(51.46554,-29.65536,12.5")
Ext Exposure t-trig coinc t_exp src pix bkg pix net_rate +/- mag UL sum_rate +/- mag UL sumexp wtd_rate +/- mag wt/t
1 vv780074864E 110.8 0.88 10.1 191.9 203 183 6636 21.611 1.607 14.32 14.1
above line uses coinc_corr_src: 0.875 corr_bkg: 0.994
# ============ Reading file sw01351039001uvv_sk.img ================
Use keyword TRIGTIME of 780074753.792 for trigger time.
Long-term sensitivity correction to zero point is -0.230 at 780076822
The processing date in extension 0 is: 2025-09-30T08:48:34
The trigger time is: 780074753.792. The reference is keyword in image file
Using zero point of 17.660 for filter V
Use aperture correction of 1.030 based on aperture of 4.00
Using background region based on sources found in extension 2:
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(51.46554,-29.65536,25")
fk5;-circle(51.46554,-29.65536,12.5")
Ext Exposure t-trig coinc t_exp src pix bkg pix net_rate +/- mag UL sum_rate +/- mag UL sumexp wtd_rate +/- mag wt/t
1 vv780076822E 2068.3 0.98 19.4 39.6 197 508 5890 1.219 0.341 17.45 16.8 1.2186 0.3412 17.45 16.8 19 28.546 7.994 16.65 0.048
2 vv780076995E 2241.8 0.99 19.5 29.8 197 757 5844 0.229 0.297 19.26 17.5 0.7229 0.2260 18.01 17.3 39 20.278 5.777 17.02 0.037
Sum (T+ 2068 to 2262): 69.4 42.5 (est. in src region) SNR_unwtd_sum: 3.20 0.9987 signif. UL: 17.29
0 39 780076919 2165.0 96.6 -96.7 0.7229 0.2260 18.012 0.408 -0.295
Total wtd_rate (for all exposures so far): 32.388 +/- 0.477 snr: 67.9 mag: 16.51 UL: 13.84
Rebinned Data for sw01351039001uvv_sk.img using a zero point of 17.660:
No Exposure t-avg + / - net_rate +/- mag +/- t-avg sum_rate +/- mag +/- UL3
0 38.3 2165.1 96.5 -96.8 0.7229 0.2260 18.01 0.30 2165.1 0.7229 0.2260 18.01 0.30 17.29
=========================================================
================ Start New Filter B ==================
=========================================================
# ============ Reading file sw01351039001ubb_sk.img ================
Use keyword TRIGTIME of 780074753.792 for trigger time.
Long-term sensitivity correction to zero point is -0.228 at 780076920
The processing date in extension 0 is: 2025-09-30T08:48:37
The trigger time is: 780074753.792. The reference is keyword in image file
Using zero point of 18.882 for filter B
Use aperture correction of 1.035 based on aperture of 4.00
Using background region based on sources found in extension 3:
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(51.46554,-29.65536,25")
fk5;-circle(51.46554,-29.65536,12.5")
Ext Exposure t-trig coinc t_exp src pix bkg pix net_rate +/- mag UL sum_rate +/- mag UL sumexp wtd_rate +/- mag wt/t
1 bb780076920E 2166.5 0.97 19.5 79.5 197 1653 5883 1.327 0.497 18.57 17.8 1.3269 0.4967 18.57 17.8 19 10.567 3.956 17.73 0.043
2 bb780082213I 7460.1 0.98 88.2 173.7 200 3168 5903 0.792 0.159 19.14 18.6 0.8874 0.1578 19.01 18.5 108 15.938 2.936 17.28 0.034
3 bb780093438I 18685.1 0.98 295.0 707.1 200 17670 5839 0.365 0.097 19.97 19.3 0.5052 0.0825 19.62 19.2 403 17.143 2.698 17.20 0.013
4 bb780093742I 18988.8 0.97 107.5 386.7 200 10428 5848 0.299 0.199 20.19 19.0 0.4622 0.0774 19.72 19.3 510 17.244 2.651 17.20 0.010
Sum (T+ 2167 to 19098): 1347.0 1124.6 (est. in src region) SNR_unwtd_sum: 5.97 0.9987 signif. UL: 19.28
0 510 780091039 16285.5 2812.6 -14119.0 0.4622 0.0774 19.720 0.198 -0.168
Total wtd_rate (for all exposures so far): 32.526 +/- 0.479 snr: 67.9 mag: 16.51 UL: 15.05
Rebinned Data for sw01351039001ubb_sk.img using a zero point of 18.882:
No Exposure t-avg + / - net_rate +/- mag +/- t-avg sum_rate +/- mag +/- UL3
0 18.8 2176.4 9.9 -9.9 1.3269 0.4967 18.57 0.35 2176.4 1.3269 0.4967 18.57 0.35 17.75
1 86.7 7504.9 44.8 -44.8 0.7922 0.1590 19.14 0.20 6555.8 0.8874 0.1578 19.01 0.18 18.55
2 392 18890.1 207.9 -205.1 0.3479 0.0885 20.03 0.25 16277.3 0.4622 0.0774 19.72 0.17 19.28
=========================================================
================ Start New Filter U ==================
=========================================================
# ============ Reading file sw01351039001uuu_sk.img ================
Use keyword TRIGTIME of 780074753.792 for trigger time.
Long-term sensitivity correction to zero point is -0.247 at 780076896
The processing date in extension 0 is: 2025-09-30T08:48:37
The trigger time is: 780074753.792. The reference is keyword in image file
Using zero point of 18.093 for filter U
Use aperture correction of 1.032 based on aperture of 4.00
Using background region based on sources found in extension 2:
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(51.46554,-29.65536,25")
fk5;-circle(51.46554,-29.65536,12.5")
Ext Exposure t-trig coinc t_exp src pix bkg pix net_rate +/- mag UL sum_rate +/- mag UL sumexp wtd_rate +/- mag wt/t
1 uu780076895E 2141.8 0.97 19.5 84.6 199 765 5955 3.232 0.506 16.82 16.4 3.2320 0.5062 16.82 16.4 19 52.630 8.242 15.99 0.045
2 uu780082008I 7254.9 0.99 196.6 317.0 200 3520 5862 1.047 0.095 18.04 17.8 1.2399 0.0977 17.86 17.6 216 56.339 4.483 15.91 0.032
3 uu780116080I 41326.5 0.98 146.8 368.0 204 10064 5835 0.117 0.140 20.42 18.7 0.7882 0.0812 18.35 18.1 363 56.263 4.469 15.91 0.010
Sum (T+ 2142 to 41476): 769.7 497.4 (est. in src region) SNR_unwtd_sum: 9.70 0.9987 signif. UL: 18.06
0 363 780095602 20848.1 20627.6 -18706.2 0.7882 0.0812 18.351 0.118 -0.106
Total wtd_rate (for all exposures so far): 32.449 +/- 0.478 snr: 67.9 mag: 16.51 UL: 14.27
Rebinned Data for sw01351039001uuu_sk.img using a zero point of 18.093:
No Exposure t-avg + / - net_rate +/- mag +/- t-avg sum_rate +/- mag +/- UL3
0 18.8 2151.7 9.9 -9.9 3.2320 0.5062 16.82 0.16 2151.7 3.2320 0.5062 16.82 0.16 16.40
1 194 7354.8 99.9 -99.9 1.0466 0.0952 18.04 0.09 6894.5 1.2399 0.0977 17.86 0.08 17.63
2 143 41401.1 74.6 -74.6 0.1168 0.1404 20.42 0.86 20773.7 0.7882 0.0812 18.35 0.11 18.06
=========================================================
================ Start New Filter UVW1 ==================
=========================================================
# ============ Reading file sw01351039001uw1_sk.img ================
Use keyword TRIGTIME of 780074753.792 for trigger time.
Long-term sensitivity correction to zero point is -0.271 at 780076871
The processing date in extension 0 is: 2025-09-30T08:48:37
The trigger time is: 780074753.792. The reference is keyword in image file
Using zero point of 17.169 for filter UVW1
Use aperture correction of 1.035 based on aperture of 4.00
Using background region based on sources found in extension 5:
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(51.46554,-29.65536,25")
fk5;-circle(51.46554,-29.65536,12.5")
Ext Exposure t-trig coinc t_exp src pix bkg pix net_rate +/- mag UL sum_rate +/- mag UL sumexp wtd_rate +/- mag wt/t
1 w1780076871E 2117.6 0.99 19.4 30.0 202 82 5894 1.462 0.295 16.76 16.2 1.4619 0.2950 16.76 16.2 19 55.111 11.120 15.94 0.182
3 w1780081803I 7050.1 1.00 196.6 115.6 204 353 5855 0.546 0.057 17.83 17.5 0.6278 0.0582 17.67 17.4 216 64.615 6.061 15.76 0.136
4 w1780110166I 35412.3 1.00 403.2 100.2 204 1991 5831 0.079 0.026 19.93 19.2 0.2698 0.0264 18.59 18.3 619 64.315 5.949 15.77 0.032
5 w1780115173I 40420.2 1.00 885.6 134.3 196 2620 5874 0.055 0.014 20.32 19.7 0.1432 0.0135 19.28 19.0 1505 62.961 5.648 15.79 0.023
Sum (T+ 2118 to 41320): 380.1 172.2 (est. in src region) SNR_unwtd_sum: 10.58 0.9987 signif. UL: 19.01
0 1505 780109310 34556.4 6763.6 -32438.8 0.1432 0.0135 19.279 0.107 -0.098
Total wtd_rate (for all exposures so far): 32.570 +/- 0.478 snr: 68.1 mag: 16.51 UL: 13.34
Rebinned Data for sw01351039001uw1_sk.img using a zero point of 17.169:
No Exposure t-avg + / - net_rate +/- mag +/- t-avg sum_rate +/- mag +/- UL3
0 19.2 2127.5 9.9 -9.9 1.4619 0.2950 16.76 0.20 2127.5 1.4619 0.2950 16.76 0.20 16.24
1 196 7150.0 99.9 -99.9 0.5458 0.0569 17.83 0.11 6700.7 0.6278 0.0582 17.67 0.10 17.41
2 1.29e+03 39227.4 2092.6 -3815.1 0.0622 0.0125 20.18 0.20 34568.9 0.1432 0.0135 19.28 0.10 19.01
=========================================================
================ Start New Filter UVM2 ==================
=========================================================
# ============ Reading file sw01351039001um2_sk.img ================
Use keyword TRIGTIME of 780074753.792 for trigger time.
Long-term sensitivity correction to zero point is -0.259 at 780076847
The processing date in extension 0 is: 2025-09-30T08:48:38
The trigger time is: 780074753.792. The reference is keyword in image file
Using zero point of 16.591 for filter UVM2
Use aperture correction of 1.031 based on aperture of 4.00
Using background region based on sources found in extension 3:
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(51.46554,-29.65536,25")
fk5;-circle(51.46554,-29.65536,12.5")
Ext Exposure t-trig coinc t_exp src pix bkg pix net_rate +/- mag UL sum_rate +/- mag UL sumexp wtd_rate +/- mag wt/t
# 1 m2780076846E 2092.9 1.00 19.4 4.0 198 19 5845
# 2 m2780077020E 2266.7 1.00 19.4 6.1 198 42 5847
3 m2780109259I 34505.5 1.00 885.6 56.0 200 559 5857 0.043 0.009 20.01 19.5 0.0430 0.0088 20.01 19.5 886 45.308 9.242 16.15 0.044
Sum (T+ 34506 to 35405): 56.0 19.1 (est. in src region) SNR_unwtd_sum: 4.90 0.9987 signif. UL: 19.49
0 886 780109709 34955.4 449.9 -449.9 0.0430 0.0088 20.008 0.248 -0.201
Total wtd_rate (for all exposures so far): 32.452 +/- 0.477 snr: 68.1 mag: 16.51 UL: 12.77
Rebinned Data for sw01351039001um2_sk.img using a zero point of 16.591:
No Exposure t-avg + / - net_rate +/- mag +/- t-avg sum_rate +/- mag +/- UL3
0 885 34955.4 449.9 -449.9 0.0430 0.0088 20.01 0.20 34955.4 0.0430 0.0088 20.01 0.20 19.49
=========================================================
================ Start New Filter UVW2 ==================
=========================================================
# ============ Reading file sw01351039001uw2_sk.img ================
Use keyword TRIGTIME of 780074753.792 for trigger time.
Long-term sensitivity correction to zero point is -0.345 at 780076971
The processing date in extension 0 is: 2025-09-30T08:48:39
The trigger time is: 780074753.792. The reference is keyword in image file
Using zero point of 17.035 for filter UVW2
Use aperture correction of 1.035 based on aperture of 4.00
Using background region based on sources found in extension 3:
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(51.46554,-29.65536,25")
fk5;-circle(51.46554,-29.65536,12.5")
Ext Exposure t-trig coinc t_exp src pix bkg pix net_rate +/- mag UL sum_rate +/- mag UL sumexp wtd_rate +/- mag wt/t
# 1 w2780076971E 2217.6 1.00 19.5 3.8 198 53 5846
2 w2780125122I 50368.9 1.00 282.0 27.8 196 839 5840 -0.001 0.020 99.00 20.0 -0.0013 0.0197 99.00 20.0 282 -1.365 19.928 99.00 0.010
3 w2780130665I 55911.7 1.00 285.9 34.6 204 889 5841 0.013 0.022 21.77 19.8 0.0058 0.0146 22.63 20.3 568 5.415 15.438 18.46 0.009
Sum (T+ 50369 to 56202): 62.4 59.2 (est. in src region) SNR_unwtd_sum: 0.39 0.9987 signif. UL: 20.25
0 568 780128058 53303.9 2898.3 -2935.1 0.0058 0.0146 22.632 76.368 -1.371
Total wtd_rate (for all exposures so far): 32.571 +/- 0.478 snr: 68.1 mag: 16.51 UL: 13.21
Rebinned Data for sw01351039001uw2_sk.img using a zero point of 17.035:
No Exposure t-avg + / - net_rate +/- mag +/- t-avg sum_rate +/- mag +/- UL3
0 567 53303.6 2898.6 -2934.7 0.0058 0.0146 22.63 1.37 53303.6 0.0058 0.0146 22.63 1.37 20.25
The data range from T+130.8 s (0.00 d) to T+56202.2 s (0.65 d)
Wrote uvot_fluxes_250930d09h19m57s402742usUT.qdp
Wrote uvot_fluxes_250930d09h19m57s402742usUT.gif
Wrote uvot_fluxes_250930d09h19m57s402742usUT.ps
Wrote uvot_fluxes_250930d09h19m57s402742usUT_vis.qdp
Wrote uvot_fluxes_250930d09h19m57s402742usUT_uv.qdp
Wrote uvot_fluxes_250930d09h19m57s402742usUT_vis.gif
Wrote uvot_fluxes_250930d09h19m57s402742usUT_vis.ps
Wrote uvot_fluxes_250930d09h19m57s402742usUT_uv.gif
Wrote uvot_fluxes_250930d09h19m57s402742usUT_uv.ps
# ================ Make Light Curve for Weighted Filters ==========
Use the following filters with indicated color corrections (mags):
v (0) , b (0) , white (0) , u (0) ,
Rebinned Data for All_files using a zero point of 20.290:
No Exposure t-avg + / - net_rate +/- mag +/- t-avg sum_rate +/- mag +/- UL3
0 2.81 162.9 32.1 -32.1 199.8186 3.3762 14.54 0.02 162.9 199.8186 3.3762 14.54 0.02 14.48
1 0.00333 2121.1 40.5 -52.8 20.0833 2.7576 17.03 0.14 165.2 197.0874 3.3252 14.55 0.02 14.50
2 0.0175 2176.4 9.9 -9.9 4.8550 1.8175 18.57 0.35 177.6 182.5681 3.0771 14.64 0.02 14.58
3 0.134 2201.3 60.3 -10.5 9.3749 1.1394 17.86 0.12 268.9 118.6186 1.9860 15.11 0.02 15.05
4 0.0047 7354.8 99.9 -99.9 7.9207 0.7206 18.04 0.09 280.1 114.0187 1.9037 15.15 0.02 15.09
5 0.0143 7504.9 44.8 -44.8 2.8987 0.5817 19.14 0.20 314.8 101.2992 1.6871 15.28 0.02 15.22
6 0.00764 19075.6 22400.1 -390.5 1.2832 0.3129 20.02 0.24 362.7 87.8818 1.4614 15.43 0.02 15.38
The data range from T+130.8 s (0.00 d) to T+56202.2 s (0.65 d)
Wrote uvot_fluxes_wtd_250930d09h19m57s402742usUT.qdp
Wrote uvot_fluxes_wtd_250930d09h19m57s402742usUT.gif
Wrote uvot_fluxes_wtd_250930d09h19m57s402742usUT.ps
Normal end of uvot_fluxes_wget.pl vrs. 2024-08-27 fem