Last update: 11Sep2011 mph These are just notes for us; follow the schedule During Sep/Oct 2011, the dome zenith angle is not restricted other than the usual Routines to use: eggidl/gen lsttoazRT eggidl/gen azdectozaha (function) our version of phil's Phil made a useful diagram of Az versus ZA for zenith crossing strips. It shows that at some Az's, the value of ZA is double valued; CIMA always chooses the lower ZA, so we need to check carefully. Also there are limits to the ALFA RotAng which need to be considered *** NOTE: THE BOTTOM LINE IS TO GET THE HA RIGHT Need to avoid crossing 90.0 or 270.0 Need to avoid double valued ZA's 76p1 +182218 Note that this was done on 10.05.01 at az=90.4, za=4 ** DOES NOT WORK IN FALL SKY**** 76p2 +182936 Note that this was done on 10.04.07 at az=267.9 but there were issues; it seems that az>90 is safest. 77p1 +183654 77p2 +184412 78p1 +185130 lsttoazRT,110909L,214500L,212500L,182218L,240. az=91.6852 za= 4.604 RotAng=-71.3 20min earlier J2000 J2011 212500.0 +182218 2125327 +182520 stat=azdectozaha(91.685d,18.4222d,za,ha,/verbose) Friday 09 Sep 11.09.06 => daynum: 252 epoch: 2011.69 This is the first night after ALFA installation. 77p2 +184412 lsttoazRT,110909L,214000L,212000L,184412L,240. OPTANG beyond ALFA limit; consider alternatives lsttoazRT,110909L,214000L,221000L,184412L,240. az=264.7089 za= 7.25 RotAng=-67.9 30min later lsttoazRT,110909L,214000L,220000L,184412L,240. az=263.2472 za= 4.89 RotAng=-65.1 20min later Try this lsttoazRT,110910L,030000L,031700L,184412L,240. az=262.6526 za= 4.20 RotAng=-64.2 17min later lsttoazRT,110910L,030000L,031800L,184412L,240. az=262.9597 za= 4.44 RotAng=-64.6 18min later d=18.+(47./60.)+(24./3600.) J2000 J2011.69 220000.0 +184412 220033.3 +184735 stat=azdectozaha(263.25d,18.79d,za,ha,/verbose) srcAz: 83.25 decD: 18.790 za: 4.13 ha: 17.33 mins 230000.0 +184412 230034.6 +184758 stat=azdectozaha(263.25d,18.80d,za,ha,/verbose) srcAz: 83.25 decD: 18.800 za: 4.24 ha: 17.78 mins 000000.0 +184412 000035.9 +184806 stat=azdectozaha(263.25d,18.80d,za,ha,/verbose) srcAz: 83.25 decD: 18.800 za: 4.24 ha: 17.78 mins 010000.0 +184412 010037.3 +184758 stat=azdectozaha(263.25d,18.80d,za,ha,/verbose) ditto 030000.0 +184412 030039.7 +184657 stat=azdectozaha(263.25d,18.78d,za,ha,/verbose) srcAz: 83.25 decD: 18.780 za: 4.02 ha: 16.88 mins 215926.7 +184412 220000.0 +184735 stat=azdectozaha(263.3d,18.79d,za,ha,/verbose) srcAz: 83.30 decD: 18.790 za: 4.17 ha: 17.49 mins Az = 263.3 deg, ZA =4.2 deg, PA = -65 deg. Saturday 10 Sep 11.09.10 76p2 +182936 lsttoazRT,110910L,214500L,220200L,182936L,240. az=265.73 za= 4.16 RotAng=-67.9 17min later d=18.+(29./60.)+(36./3600.) 18.4933 J2000 J2011.69 220000.0 +182936 220033.3 +183259 stat=azdectozaha(266.5d,18.5497d,za,ha,/verbose) srcAz: 86.50 decD: 18.550 za: 3.95 ha: 16.63 mins stat=azdectozaha(266.7d,18.5497d,za,ha,/verbose) srcAz: 86.70 decD: 18.550 za: 4.36 ha: 18.37 mins 230000.0 +182936 230034.6 +183322 stat=azdectozaha(266.5d,18.5561d,za,ha,/verbose) srcAz: 86.50 decD: 18.556 za: 4.12 ha: 17.35 mins 000001.0 +182936 000036.9 +183330 stat=azdectozaha(266.5d,18.5583d,za,ha,/verbose) srcAz: 86.50 decD: 18.558 za: 4.18 ha: 17.60 mins stat=azdectozaha(266.7d,18.5583d,za,ha,/verbose) srcAz: 86.70 decD: 18.558 za: 4.64 ha: 19.53 min 010000.0 +182936 010037.3 +183322 030000.0 +182936 030039.6 +183221 Az = 266.7 deg, ZA =4.0 deg, PA = -67.9 deg. Sunday 11 Sep 11.09.11 77p1 +183654 lsttoazRT,110911L,213500L,215500L,183654L,240. az=264.6817 za= 4.879 RotAng=-66.8 d=18.+(36./60.)+(54./3600.) 18.6150 J2000 J2011.7 215500.0 +183654 215533.2 +184014 stat=azdectozaha(264.7d,18.6706d,za,ha,/verbose) srcAz: 84.70 decD: 18.671 za: 3.91 ha: 16.43 mins stat=azdectozaha(265.0d,18.6706d,za,ha,/verbose) srcAz: 85.00 decD: 18.671 za: 4.23 ha: 17.79 mins stat=azdectozaha(265.5d,18.6706d,za,ha,/verbose) srcAz: 85.50 decD: 18.671 za: 4.94 ha: 20.80 mins 221500.0 +183654 221533.6 +184024 stat=azdectozaha(265.5d,18.6733d,za,ha,/verbose) srcAz: 85.50 decD: 18.673 za: 4.99 ha: 21.03 mins 230000.0 +183654 230034.6 +184040 stat=azdectozaha(265.5d,18.6778d,za,ha,/verbose) srcAz: 85.50 decD: 18.678 za: 5.09 ha: 21.41 mins 000000.0 +183654 000036.0 +184048 stat=azdectozaha(265.5d,18.6800d,za,ha,/verbose) srcAz: 85.50 decD: 18.680 za: 5.13 ha: 21.60 mins Az = 265.5 deg, ZA =4.9 deg, PA = -67 deg. Monday 12 Sep 11.09.12 76p1 +182218 lsttoazRT,110912L,215500L,220200L,182218L,240. OPTANG beyond ALFA limit; consider alternatives For this one, it seems necessary to more to az close to 92 degrees to make it work We also note that on 10.05.01 we got to 182200 by pointing at 181900! Az=90.4; Rot=-69.3. RA = LST-28 We did +181500 on 10.09.27 at Az=89.5 = 449.7, ZA=5.7 and 27min earlier lsttoazRT,110912L,214500L,212000L,182218L,240. az=91.6439 za= 5.791 RotAng=-70.9 d=18.+(22./60.)+(18/3600.) 18.3717 J2000 J2011.7 212000.0 +182218 212032.6 +182517 stat=azdectozaha(91.6d,18.4214d,za,ha,/verbose) gives us: sq < 0 1 times in input vector WHOOOOOOOPS! (This is what must have been the problem in 2010) Let's play with the azimuth stat=azdectozaha(88.25d,18.4214d,za,ha,/verbose) srcAz: -91.75 decD: 18.421 za: 7.36 ha:-31.01 mins lsttoazRT,110912L,214500L,211500L,182218L,240. az=91.6669 za= 6.977 RotAng=-70.6 So there is a real discrepancy here...... I say we go with what actually worked before: point at +181900 and use an Az of 90.4 degrees. 211500.0 +181900 211532.5 +182156 stat=azdectozaha(88.25d,18.3656d,za,ha,/verbose) srcAz: -91.75 decD: 18.366 za: 10.12 ha:-42.64 mins stat=azdectozaha(90.4d,18.3656d,za,ha,/verbose) sq < 0 1 times in input vector J2000 J2011.7 212000.0 +182218 212032.6 +182517 stat=azdectozaha(88.25d,18.4214d,za,ha,/verbose) srcAz: -91.75 decD: 18.421 za: 7.36 ha:-31.01 mins 220000.0 +182218 220033.4 +182541 stat=azdectozaha(88.25d,18.4281d,za,ha,/verbose) srcAz: -91.75 decD: 18.428 za: 6.71 ha:-28.27 mins 230000.0 +182218 230034.6 +182604 stat=azdectozaha(88.25d,18.4344d,za,ha,/verbose) sq < 0 1 times in input vector 235900.0 +182218 235935.9 +182612 stat=azdectozaha(88.25d,18.4367d,za,ha,/verbose) sq < 0 1 times in input vector 010000.0 +182218 010037.3 +182604 stat=azdectozaha(88.25d,18.4344d,za,ha,/verbose) sq < 0 1 times in input vector 020000.0 +182218 020038.6 +182540 stat=azdectozaha(88.25d,18.4281d,za,ha,/verbose) 030000.0 +182218 030039.6 +182503 stat=azdectozaha(88.25d,18.4214d,za,ha,/verbose) lsttoazRT,100501L,094300L,092500L,181900L,240. this is what actually got us to point on 10.05.01 almanac for day 2011 09 12 JD(AST=0): 2455816.67 Computation via lsttoazRT (eggidl:mph) at: Sun Sep 11 12:06:37 2011 Source ra,dec: 92500 181900 9.4166664 18.316666 Julian Date AST LMST az za RotAng Sep Slew Rotate dT 1 2455317.482528 19h34m50s 09h43m00s 89.5879 4.126 -69.1 1.81 0.0 0.0 0.0 stat=azdectozaha(90.4d,18.3167d,za,ha,/verbose) srcAz: -89.60 decD: 18.317 za: 2.57 ha:-10.84 mins So, there really is something weird..... the input az is not the srcAz IDL> lsttoazRT,110912L,214500L,212700L,181900L,240. almanac for day 2011 09 12 JD(AST=0): 2455816.67 Computation via lsttoazRT (eggidl:mph) at: Sun Sep 11 12:14:13 2011 Source ra,dec: 212700 181900 21.449999 18.316666 Julian Date AST LMST az za RotAng Sep Slew Rotate dT 1 2455816.617333 22h48m58s 21h45m00s 90.9878 4.128 -70.8 1.81 0.0 0.0 0.0 stat=azdectozaha(90.45d,18.316666 IDL> lsttoazRT,110912L,214500L,212700L,182218L,240. almanac for day 2011 09 12 JD(AST=0): 2455816.67 Computation via lsttoazRT (eggidl:mph) at: Sun Sep 11 12:15:41 2011 Source ra,dec: 212700 182218 21.449999 18.371666 Julian Date AST LMST az za RotAng Sep Slew Rotate dT 1 2455816.617333 22h48m58s 21h45m00s 91.7460 4.128 -71.7 1.81 0.0 0.0 0.0 *************** THIS DID NOT WORK**************** We were able to point the telescope to the right coords and track, but once "OBSERVE" is hit, the telescope took off to Az=236! Greg and I experimented and could always point where we wanted to, but after hitting observe, with the telescope went to Az=236 or pointed at Dec =+17d42. Rather than wasting telescope time, we gave up after 15 min. and proceeded to complete the drift 78p1 at +18d51m30, originally scheduled for Sunday. Sunday 18 Sep 11.09.18 but done on Mon 12 Sep 11.09.12 drift78p1 +185130 lsttoazRT,110918L,214500L,220300L,185130L,240. az= 261.1312 za= 4.429 RotAng= -62.6 d=18.+(51./60.)+(30./3600.) 18.8583 J2000 J2011.7 220300.0 +185130 220333.4 +185454 stat=azdectozaha(262.0d,18.9150d,za,ha,/verbose) srcAz: 82.00 decD: 18.915 za: 4.44 ha: 18.59 mins ******************************************************************************************************************************************** OK, back to easier stuff after Monday the 12th. Sat 11.09.17 drift79p1 214200.0 +190606 Saturday 17 Sep 11.09.17 drift79p1 +190606 lsttoazRT,110917L,214200L,220000L,190606L,240. az= 258.0322 za= 4.464 RotAng= -59.1 d=19.+(06./60.)+(06./3600.) 19.1017 J2000 J2011.7 220000.0 +190606 220033.3 +190929 stat=azdectozaha(258.0d,19.1581d,za,ha,/verbose) srcAz: 78.00 decD: 19.158 za: 4.10 ha: 16.97 mins 230000.0 +190606 230034.6 +190952 stat=azdectozaha(258.0d,19.1644d,za,ha,/verbose) srcAz: 78.00 decD: 19.164 za: 4.13 ha: 17.11 mins 235959.0 +190606 000035.0 +191000 stat=azdectozaha(258.0d,19.1667d,za,ha,/verbose) srcAz: 78.00 decD: 19.167 za: 4.14 ha: 17.16 mins 010000.0 +190606 010037.4 +190952 stat=azdectozaha(258.0d,19.1644d,za,ha,/verbose) srcAz: 78.00 decD: 19.164 za: 4.13 ha: 17.11 mins Az = 258.0 deg, ZA =4.1 deg, PA = -59 deg. RA=LST+17. Sunday 18 Sep 11.09.18 On this night, let's try to fill in a bit closer to 18d22 but still a bit off. drift76p1 +182451 lsttoazRT,110918L,214500L,220300L,182451L,240. az= 266.8959 za= 4.399 RotAng= -69.3 Beware: rotang near iteration limit - last -70.883991 -69.283991 -69.283991 0.0000000 d=18.+(24./60.)+(51./3600.) 18.8583 J2000 J2011.7 220300.0 +182451 220333.4 +182815 stat=azdectozaha(267.8d,18.4708d,za,ha,/verbose) srcAz: 87.80 decD: 18.471 za: 4.76 ha: 20.06 mins 230000.0 +182451 230034.6 +182837 stat=azdectozaha(267.8d,18.4769d,za,ha,/verbose) srcAz: 87.80 decD: 18.477 za: 5.46 ha: 23.02 mins 000000.1 +182451 000036.1 +182845 stat=azdectozaha(267.8d,18.4792d,za,ha,/verbose) srcAz: 87.80 decD: 18.479 za: 5.89 ha: 24.82 mins 010000.0 +182451 010037.3 +182837 stat=azdectozaha(267.8d, On the other size 220300.0 +182451 220333.4 +182815 stat=azdectozaha(92.2d,18.4708d,za,ha,/verbose) srcAz: 87.80 decD: 18.471 za: 4.76 ha: 20.06 mins Try this one at AZ = 267.8 ZA=4.6 RotAng = -70 RA = LST +20. Monday 19 Sep 11.09.19 drift80p1 +192042 lsttoazRT,110919L,213500L,215300L,+192042L,240. az= 254.9975 za= 4.512 RotAng= -55.5 d=19.+(20./60.)+(42./3600.) 19.3450 J2000 J2011.7 215300.0 +192042 215333.1 +192401 stat=azdectozaha(255.0d,19.4003d,za,ha,/verbose) srcAz: 75.00 decD: 19.400 za: 4.24 ha: 17.35 mins Tuesday 20 Sep 11.09.20 drift81p1 +193518 lsttoazRT,110920L,214000L,215800L,193518L,240. az= 252.02 za= 4.573 RotAng= -52.2 d=19.+(35./60.)+(18./3600.) 19.5883 J2000 J2011.7 215800.0 +193518 215833.2 +193840 stat=azdectozaha(252.0d,19.6444d,za,ha,/verbose) srcAz: 72.00 decD: 19.644 za: 4.34 ha: 17.54 mins Friday 23 Sep 11.09.23 day number 266 = 2011.73 drift82p1 +194954 lsttoazRT,110923L,213300L,215000L,195954L,240. az= 246.1553 za= 4.448 RotAng= -45.6 d=19.+(49./60.)+(54./3600.) 19.83 J2000 J2011.7 214400.0 +194954 214432.9 +195309 stat=azdectozaha(248.0d,19.8858d,za,ha,/verbose) srcAz: 68.00 decD: 19.886 za: 4.21 ha: 16.61 mins So set at AZ= 248 ZA = 4.2 RotAng=-46 Saturday 24 Sep 11.09.24 drift78p2 +185848 lsttoazRT,110924L,213000L,214800L,185848L,240. az = 259.5938 za= 4.444 RotAng= -60.8 J2000 J2011.7 214800.0 +185848 214833.1 +190205 stat=azdectozaha(260.00d,19.0347d,za,ha,/verbose) srcAz: 80.00 decD: 19.035 za: 4.21 ha: 17.56 mins So set at AZ= 260 ZA = 4.2 RotAng=-61 RAN THIS ONE ON SEP 18 WHEN CIMA DUAL-ZA PROBLEM CROPPED UP Sunday 25 Sep 11.09.25 drift 79p2 +191324 lsttoazRT,110925L,214000L,215800L,191324L,240. az = 256.5002 za= 4.487 RotAng= -57.2 J2000 J2011.7 215800.0 +191324 215833.3 +191646 stat=azdectozaha(257.0d,19.2794d,za,ha,/verbose) srcAz: 77.00 decD: 19.279 za: 4.35 ha: 17.97 mins Monday 26 Sep 11.09.26 drift 80p2 +192800 lsttoazRT,110926L,214500L,220300L,192000L,240. az = 255.1236 za= 4.511 RotAng= -55.7 J2000 J2011.7 220300.0 +192800 220333/4 +193125 stat=azdectozaha(254.0d,19.5236d,za,ha,/verbose) srcAz: 74.00 decD: 19.524 za: 4.44 ha: 18.12 mins Tuesday 27 Sep 11.09.27 drift81p2 +194236 lsttoazRT,110927L,214500L,220300L,194236,240. az = 250.5596 za= 4.609 RotAng= -50.5 lsttoazRT,110927L,214500L,220200L,194236,240. 249.6240 4.385 -49.5 1.83 J2000 J2011.7 220300.0 +194236 220333.3 +194601 stat=azdectozaha(250.0d,19.7669d,za,ha,/verbose) srcAz: 70.00 decD: 19.767 za: 4.27 ha: 17.07 mins Wednesday 28 Sep 11.09.28 drift82p2 +195712 lsttoazRT,110928L,214500L,220000L,195712L,240. az = 244.2085 za= 4.033 RotAng= -43.4 lsttoazRT,110928L,214500L,220100L,195712L,240. 245.5044 4.249 -44.8 J2000 J2011.7 220000.0 +195712 220033.2 +200035 stat=azdectozaha(245.0d,20.0097d,za,ha,/verbose) srcAz: 65.00 decD: 20.010 za: 4.01 ha: 15.48 mins So set to 245, -45 HA=16min Thursday 29 Sep 11.09.29 drift83p1 +200430 lsttoazRT,110929L,214500L,220000L,200430L,240. az = 242.6582 za= 4.084 RotAng= -41.7 J2000 J2011.7 220000.0 +200430 220033.2 +200753 stat=azdectozaha(243.0d,20.1314d,za,ha,/verbose) srcAz: 63.00 decD: 20.131 za: 4.00 ha: 15.18 mins So set to 243.0, -42, HA=15min