Grating Cartr. Grooves Dispersion Blaze Lambda dLambda Status Design. ID No. per mm [A/pix] Angle [nm] [A]
U1200 1 1200 0.39 10.4 300 794 O.K. V1200 2 1200 0.35 17.5 500 725 O.K. R1200 3 1200 0.30 26.7 750 609 O.K. I1200 4 1200 0.22 36.8 1000 460 O.K. J1200 5 1200 0.22 46.0 1200 341 unavailable (1) J1200 5 1200 0.17 46.0 600 450 O.K. (2)
U600 6 600 0.81 5.2 300 1656 O.K. V600 7 600 0.80 8.6 500 1630 O.K. R600 8 600 0.75 13.9 800 1533 O.K.
U300 9 300 1.67 2.5 300 3404 O.K. V300 10 300 1.67 4.3 500 3404 O.K.Note 1 : Listed values apply for 1st order forward blaze.
1200 lpmm 1st order (forward blaze)
1200 lpmm 1st order (backward blaze)
1200 lpmm 2nd order (forward blaze)
1200 lpmm 2nd order (backward blaze)
GROT: encoder value lmin-lcen-lmax: minimum - middle - maximum wavelength [A] coverage: free spectral range [A] rdisp: reciprocal linear dispersion [A/pixel] FWHM_LARR: spectral resolution (FWHM) for Lensarray IFU (with 100um fibers) R_LARR: resolving power for Lensarray IFU (100um fibers) FWHM_PPAK: spectral resolution (FWHM) for PPAK IFU (with 150um fibers) R_PPAK: resolving power for PPAK IFU (150um fibers) Convention: In "forward blaze", the grating facets are tilted towards the spectrograph camera, whereas in "backward blaze" the facets are tilted towards the collimator. In the FWD orientation, the grating normal tends to be near the collimator optical axis, in BWD near the camera axis.
GROT lmin lcen lmax coverage rdisp FWHM_LARR R_LARR FWHM_PPAK R_PPAK -76.0 2495 - 4233 - 5928 3433 1.7 7.1 598 10.6 399 -75.0 3591 - 5316 - 6996 3404 1.7 7.1 747 10.7 498 -74.0 4687 - 6398 - 8062 3375 1.7 7.2 895 10.7 597 -73.0 5780 - 7477 - 9125 3345 1.6 7.2 1041 10.8 694 -72.0 6873 - 8554 - 10186 3313 1.6 7.2 1186 10.8 791 -71.0 7963 - 9629 - 11243 3281 1.6 7.2 1329 10.9 886 -70.0 9050 - 10701 - 12298 3247 1.6 7.3 1472 10.9 981
GROT lmin lcen lmax coverage rdisp FWHM_LARR R_LARR FWHM_PPAK R_PPAK -73.0 2890 - 3739 - 4563 1672 0.8 3.6 1041 5.4 694 -72.0 3436 - 4277 - 5093 1657 0.8 3.6 1186 5.4 791 -71.0 3981 - 4814 - 5622 1640 0.8 3.6 1329 5.4 886 -70.0 4525 - 5350 - 6149 1624 0.8 3.6 1472 5.5 981 -69.0 5067 - 5885 - 6674 1606 0.8 3.6 1614 5.5 1076 -68.0 5608 - 6417 - 7197 1589 0.8 3.7 1755 5.5 1170 -67.0 6147 - 6947 - 7718 1571 0.8 3.7 1895 5.5 1263 -66.0 6685 - 7476 - 8237 1552 0.8 3.7 2034 5.5 1356 -65.0 7220 - 8002 - 8753 1533 0.8 3.7 2173 5.5 1449 -64.0 7753 - 8525 - 9266 1513 0.7 3.7 2311 5.5 1541 -63.0 8284 - 9046 - 9777 1493 0.7 3.7 2449 5.5 1633 -62.0 8812 - 9565 - 10285 1473 0.7 3.7 2586 5.5 1724 -61.0 9337 - 10080 - 10789 1452 0.7 3.7 2723 5.6 1815
GROT lmin lcen lmax coverage rdisp FWHM_LARR R_LARR FWHM_PPAK R_PPAK -67.0 3074 - 3474 - 3859 785 0.38 1.83 1895 2.75 1263 -66.0 3342 - 3738 - 4118 776 0.38 1.84 2034 2.76 1356 -65.0 3610 - 4001 - 4376 766 0.38 1.84 2173 2.76 1449 -64.0 3877 - 4263 - 4633 757 0.37 1.84 2311 2.77 1541 -63.0 4142 - 4523 - 4888 747 0.37 1.85 2449 2.77 1633 -62.0 4406 - 4782 - 5142 736 0.36 1.85 2586 2.77 1724 -61.0 4669 - 5040 - 5395 726 0.36 1.85 2723 2.78 1815 -60.0 4930 - 5296 - 5645 715 0.35 1.85 2860 2.78 1907 -59.0 5190 - 5551 - 5894 704 0.34 1.85 2997 2.78 1998 -58.0 5448 - 5804 - 6141 693 0.34 1.85 3134 2.78 2089 -57.0 5705 - 6055 - 6386 682 0.33 1.85 3271 2.78 2181 -56.0 5959 - 6304 - 6630 670 0.33 1.85 3408 2.77 2272 -55.0 6212 - 6551 - 6871 658 0.32 1.85 3546 2.77 2364 -54.0 6464 - 6796 - 7110 646 0.32 1.85 3684 2.77 2456 -53.0 6713 - 7040 - 7347 634 0.31 1.84 3822 2.76 2548 -52.0 6960 - 7281 - 7582 622 0.30 1.84 3960 2.76 2640 -51.0 7205 - 7520 - 7814 609 0.30 1.83 4100 2.75 2733 -50.0 7448 - 7756 - 8044 597 0.29 1.83 4239 2.74 2826 -49.0 7688 - 7991 - 8272 584 0.29 1.82 4380 2.74 2920 -48.0 7926 - 8222 - 8497 571 0.28 1.82 4522 2.73 3015 -47.0 8162 - 8452 - 8720 557 0.27 1.81 4664 2.72 3109 -46.0 8395 - 8678 - 8939 544 0.27 1.81 4808 2.71 3205 -45.0 8626 - 8902 - 9157 530 0.26 1.80 4952 2.70 3301 -44.0 8854 - 9124 - 9371 517 0.25 1.79 5098 2.68 3399 -43.0 9080 - 9342 - 9582 503 0.25 1.78 5246 2.67 3497 -42.0 9302 - 9558 - 9791 489 0.24 1.77 5394 2.66 3596 -41.0 9522 - 9771 - 9997 474 0.23 1.76 5545 2.64 3697 -40.0 9739 - 9981 - 10199 460 0.23 1.75 5697 2.63 3798
GROT lmin lcen lmax coverage rdisp FWHM_LARR R_LARR FWHM_PPAK R_PPAK -93.0 3060 - 3527 - 3997 937 -0.46 1.53 2300 2.30 1533 -94.0 3322 - 3791 - 4262 939 -0.46 1.52 2502 2.27 1668 -95.0 3584 - 4053 - 4525 941 -0.46 1.50 2709 2.24 1806 -96.0 3844 - 4315 - 4787 943 -0.46 1.48 2921 2.22 1947 -97.0 4104 - 4575 - 5048 944 -0.46 1.46 3140 2.19 2093 -98.0 4362 - 4834 - 5307 945 -0.46 1.44 3364 2.16 2243 -99.0 4619 - 5091 - 5564 946 -0.46 1.42 3594 2.12 2396 -100.0 4874 - 5347 - 5820 946 -0.46 1.40 3832 2.09 2555 -101.0 5128 - 5601 - 6074 946 -0.46 1.37 4077 2.06 2718 -102.0 5380 - 5854 - 6326 946 -0.46 1.35 4329 2.03 2886 -103.0 5631 - 6105 - 6577 946 -0.46 1.33 4590 1.99 3060 -104.0 5880 - 6353 - 6825 945 -0.46 1.31 4860 1.96 3240 -105.0 6127 - 6600 - 7071 944 -0.46 1.28 5140 1.93 3427 -106.0 6373 - 6845 - 7315 942 -0.46 1.26 5430 1.89 3620 -107.0 6616 - 7088 - 7557 941 -0.46 1.24 5731 1.86 3821 -108.0 6857 - 7329 - 7796 939 -0.46 1.21 6044 1.82 4029 -109.0 7097 - 7567 - 8033 937 -0.46 1.19 6370 1.78 4247 -110.0 7334 - 7803 - 8268 934 -0.46 1.16 6710 1.74 4473 -111.0 7569 - 8037 - 8500 931 -0.46 1.14 7065 1.71 4710 -112.0 7801 - 8268 - 8730 928 -0.45 1.11 7436 1.67 4957 -113.0 8032 - 8497 - 8957 925 -0.45 1.09 7825 1.63 5217 -114.0 8259 - 8723 - 9181 922 -0.45 1.06 8233 1.59 5489 -115.0 8485 - 8947 - 9402 918 -0.45 1.03 8662 1.55 5775 -116.0 8707 - 9168 - 9621 913 -0.45 1.01 9114 1.51 6076 -117.0 8927 - 9386 - 9836 909 -0.44 0.98 9591 1.47 6394 -118.0 9145 - 9601 - 10049 904 -0.44 0.95 10096 1.43 6731 -119.0 9359 - 9813 - 10258 899 -0.44 0.92 10630 1.38 7087
GROT lmin lcen lmax coverage rdisp FWHM_LARR R_LARR FWHM_PPAK R_PPAK -40.0 4870 - 4990 - 5100 230 0.11 0.88 5697 1.31 3798 -39.0 4976 - 5094 - 5199 223 0.11 0.87 5851 1.31 3901 -38.0 5082 - 5196 - 5297 215 0.11 0.87 6006 1.30 4004 -37.0 5186 - 5296 - 5394 208 0.10 0.86 6164 1.29 4109 -36.0 5288 - 5395 - 5489 201 0.10 0.85 6325 1.28 4217 -35.0 5389 - 5492 - 5582 193 0.09 0.85 6487 1.27 4325 -34.0 5488 - 5587 - 5674 186 0.09 0.84 6652 1.26 4435 -33.0 5585 - 5681 - 5763 178 0.09 0.83 6820 1.25 4547 -32.0 5681 - 5772 - 5851 170 0.08 0.83 6991 1.24 4661 -31.0 5775 - 5863 - 5938 163 0.08 0.82 7164 1.23 4776 -30.0 5867 - 5951 - 6022 155 0.08 0.81 7341 1.22 4894
GROT lmin lcen lmax coverage rdisp FWHM_LARR R_LARR FWHM_PPAK R_PPAK -115.0 4242 - 4473 - 4701 459 -0.22 0.52 8662 0.77 5775 -116.0 4354 - 4584 - 4810 457 -0.22 0.50 9114 0.75 6076 -117.0 4464 - 4693 - 4918 455 -0.22 0.49 9591 0.73 6394 -118.0 4572 - 4800 - 5024 452 -0.22 0.48 10096 0.71 6731 -119.0 4680 - 4907 - 5129 450 -0.22 0.46 10630 0.69 7087 -120.0 4785 - 5011 - 5232 447 -0.22 0.45 11199 0.67 7466 -121.0 4890 - 5114 - 5334 444 -0.22 0.43 11804 0.65 7869 -122.0 4993 - 5216 - 5434 441 -0.22 0.42 12451 0.63 8301 -123.0 5094 - 5316 - 5532 438 -0.21 0.40 13143 0.61 8762 -124.0 5194 - 5414 - 5629 435 -0.21 0.39 13888 0.58 9259 -125.0 5292 - 5511 - 5724 432 -0.21 0.38 14690 0.56 9793 -126.0 5389 - 5606 - 5817 428 -0.21 0.36 15559 0.54 10373 -127.0 5484 - 5699 - 5908 425 -0.21 0.35 16502 0.52 11001 -128.0 5577 - 5791 - 5998 421 -0.21 0.33 17531 0.50 11687 -129.0 5668 - 5880 - 6086 417 -0.20 0.32 18658 0.47 12439 -130.0 5758 - 5968 - 6172 413 -0.20 0.30 19900 0.45 13267 -131.0 5846 - 6055 - 6256 409 -0.20 0.28 21275 0.43 14183 -132.0 5933 - 6139 - 6338 405 -0.20 0.27 22807 0.40 15205 -133.0 6017 - 6221 - 6418 401 -0.20 0.25 24526 0.38 16351