Describe NK2013_Jun13 here. [[D2DLogNika6 |Back to list of day to day logbook of observations]] == 2013-06-13 == .Cryostat Temperature: 220mK . .Arrays status today: 192 pixels 1mm ; 128 pixels 2mm .Modulation frequency: 8kHz 1mm, 4kHz 2mm Opacity is measured with the new taumeter at 225 GHz For start: .Working with the new pointing model (rms went from 5 to 2 arcsec for yesterday pointing session) .Nasmyth offset 28, 28 implemented in the pointing model .offset 0 0 /system nasmyth Set pointing : 0, 0 NEW and definitive pointing model determined from yesterday Set Focus : -1 mm .Quick description of the session: * Mars Pointing, focus, otfgeom. * Secondary calibrators * Bright extended source(s): Crab, NGC2023, OrionLBS * Skydip * Arp220 * Faint sources to measure noise figures (20-40 mJy range at 1mm) * SZ on RXJ At 12:50 '''the NCS process that control the adjustment of the M2 focus depending on the temperature gradient stopped without anybody noticing it (no alarm)'''; this had no effect until the evening since the outside temperature was stable, but '''after sunset''' we lost about ~10 degrees in ~2 hours. Up to scan 178 everything was OK, but after integration on a faint source at scan 199 we found '''huge beams''', we spent a significant time on various focus before figuring out that we had to '''move M2 by more than 3mm before finding again reasonable beams !''' Such a big change of focus is very unusual, that's how we figured out the problem. ||'''Scan'''||'''UT'''||'''Source'''||'''Command ''' ||'''Az'''||'''El'''||'''Pointing X, Y, Focus'''||'''Tau225'''|| '''Found '''|| '''Comment''' || || 123 || 10h05 || Mars || Track || 133 || 69 || 0, 0, -2.4 ||0.84 || || tuning the KIDs, checking file transfer || || 124 || 10h10 || Mars || Track || 133 || 69 || 0, 0, -2.4 ||0.84 || || || || 125 || 10h19 || Mars || Track || 133 || 69 || 0, 0, -1 ||0.84 || || || || 126 || 10h23 || Mars || Track || 139 || 71 || 0, 0, -1 ||0.84 || || || || 127 || 10h26 || Mars || cross || 141 || 71 || 0, 0, -1 ||1.16 || 2mm -3 0 || || || 128 || 10h32 || Mars || pointliss || || || -3, 0, -1 ||1.16 || 1 and 2mm -7 3 || || || 129 || 10h38 || Mars || cross || 149 || 73 || -7, 3, -1 ||1.16 ||2mm -4,4 Map:-6,3 || || || 130 || 10h42 || Mars || pointliss || 152 || 73 || -7, 3, -1 ||0.938 || -2,2;-2,3 || || || 131 || 10h46 || Mars || pointliss || 154 || 73 || -2, 3, -1 ||0.938 || -5,-2;-5,-1 || || || 132 || 10h50 || Mars || pointliss || || || -5, -1, -1 ||0.579 || -8,6 || sky is cloudy and noisy || || 133 || 10h56 || Mars || pointliss || 163 || 74 || -8, +6, -1 ||0.739 || -5,-2;-5,-1 || pointing keeps changing || || 134 || 11h01 || Mars || faintliss || 167 || 74 || -5, -1, -1 ||1.09 || -6,2;-6,2 Fwhm 16.7,20 || PSF spread is large || || 135 || 11h09 || Mars || pointliss || 174 || 75 || -6, +2, -1 ||1.09 || -5,2;-5,2 Fwhm 15,19 || || || 136 || 11h16 || Mars || pointliss || 180 || 75 || -6, +2, -1 ||1.09 || -7,2;-6,2 Fwhm 16,20 || || || 137 || 11h20 || Mars || focusp2 || 184 || 75 || -6, +2, -1 ||4?! || -0.1?;-0.75 || focus +-2mm Sky unstable at 1mmm|| || 138 || 11h45 || Mars || otfgeom || 205 || 73 || -6, +2, -1 || || -7,4;-7,4 Fwhm 14.5 19.5 || for lunch|| || 139 || 11h45 || Mars || otfgeom || 205 || 73 || -6, +2, -1 || || || cancelled. Scan never started.|| || 140 || 12h20 || Mars || otfgeom || 231 || 68 || -6, +2, -1 || || || stopped in the middle. Block in antenna|| || 141 || 12h48 || Mars || otfgeom || 231 || 68 || -6, +2, -1 || || || cancel || || 142 || 13h03 || Mars || track || 244 || 62 || -6, +2, -1 || || || || || 143 || 13h10 || Mars || otfgeom || 246 || 61 || -6, +2, -1 || || || many clouds resonances lost in the middle || || 144 || 13h39 || Mars || track || 253 || 55 || -6, +2, -1 || || || resonances found by Nello || || 145 || 13h41 || Mars || pointliss || 254 || 55 || -6, +2, -1 || || 0,9;-1,11 but uncertain || || || 146 || 13h44 || Mars || pointliss || 254 || 55 || -2, +10, -1 || 0.841 || -8,4 ? || || || 147 || 13h49 || Mars || pointliss || 256 || 54 || -2, +10, -1 || || -8,2;-9,2 || Went off resonance, sky so fluctuating || || 148 || 14h04 || Mars || pointliss || 256 || 54 || -9, +2, -1 || || -9,1;-9,1 || lots of resonances lost || || 149 || 14h08 || Higelev || track || 179.7 || 79.9 || -9, +2, -1 || || || Go to a stall position HO 180 80 and wait for an hour || || || 14h20 || Higelev || nothing || 179.7 || 79.9 || -9, +2, -1 || || || resonances OK, >14h42 no tuning || || 150 || 16h32 || 3C279 || track || 123 || 28 || -9, +2, -1 || || || resuming observations, sky a bit clearer || || 151 || 16h32 || 3C279 || pointliss || || || -9, +2, -1 || || -8 0; -8 -1 || not too far || || 152 || 16h37 || 3C279 || pointliss || || || -8, 0, -1 || || -8 2; -8 0 || ok || || 153 || 16h42 || 3C279 || cross || || || -8, 0, -1 || 0.932 || map -9 3;-9 1, X -9 2; -7 0 Fl 8,12Jy || ok || || 154 || 16h47 || 3C279 || faintliss || || || -8, 0, -1 || 0.84 || -9 0;-10 1 || || || 155 || 16h55 || 3C279 || focusp2 || || || -9, 0, -1 || || -2?,-1~ || +-2mm || || 156-160 || 16h58 || 3C279 || focusliss || || || -9, 0, -1 || 0.914 || -1.6 best trade-off || -1,-1.6,-2.2,-0.4,0.2 || || 161 || 17h12 || 3C279 || pointliss || || || -9, 0, -1.6 || || -8 -1;-8 -1 Fw15.7;19.8 Fl 11,12Jy || || || 162 || 17h16 || 3C279 || otfgeom || || || -8, -1, -1.6 || 0.892 || || cloudy but reso not lost || || 163 || 17h27 || 3C279 || faintliss || 137 || 37 || -8, -1, -1.6 || 0.860 || -5 0;-5 0 Fw16.8,20 Fl 10,18Jy || || || 164 || 17h39 || IRC10216 || track || || || -5, 0, -1.6 || || || || || 165 || 17h40 || IRC10216 || pointliss || || || -5, 0, -1.6 || || -6 2;-5 1 FW25arcsec,Fl 3.6,0.7Jy || Extended? || || 166 || 17h43 || IRC10216 || faintliss || || || -5, +1, -1.6 || || -6 3;-7 2 Fw22,26 Fl4,0.7Jy || || || 167 || 17h49 || IRC10216 || faintliss || || || -5, +1, -1.6 || || -5 2;-5 2 || || || 168 || 17h56 || M82 || track || 347 || 56 || -5, +1, -1.6 || || || || || 169 || 18h01 || M82 || pointliss || 347 || 55 || -5, +1, -1.6 || 0.829 || || look ok || || 170 || 18h03 || M82 || faintliss || 347 || 55 || -5, +1, -1.6 || 0.810 || || || || 171 || 18h10 || M82 || faintliss || 345 || 55 || -5, +1, -1.6 || 0.894 || fl1.2,0.5Jy || || || 172-173 || 18h17 || M82 || otf3x3 || 345 || 55 || -5, +1, -1.6 || 0.840 || || Az and El 3x3 arcmin scans || || 174 || 18h30 || M87 || track || 154 || 63 || -5, +1, -1.6 || 0.894 || || Readout Box rebooted || || 175 || 18h49 || M87 || faintliss || 164 || 64 || -5, +1, -1.6 || || || all right || || 176 || 18h55 || 0923+392 || track || 285 || 58 || -5, +1, -1.6 || 0.822 || || || || 177 || 19h01 || 0923+392 || pointliss || 285 || 58 || -5, +1, -1.6 || || -5,+2; -4,+2 || || || 178 || 19h03 || 0923+392 || faintliss || 286 || 56 || -4, +2, -1.6 || || -6,+2; -6,+2, Fw13.6,17.3arcs,Fl6.3,5.5Jy || || || 179 || 19h08 || HLS091828 || track|| 308 || 54 || -6, +2, -1.6 || || || || || 180-181 || 19h13 || HLS091828 || faintlisst || 308 || 54 || || || || faintliss followed by a track to tune resonances || || 182-183 || 19h17 || HLS091828 || faintlisst || 308 || 53 || || || || detected at 1 and 2mm || || 184-185 || 19h24 || HLS091828 || faintlisst || 308 || 52 || || || || || || 186-187 || 19h30 || HLS091828 || faintlisst || 308 || 51 || || || || || || 188-189 || 19h36 || HLS091828 || faintlisst || 308 || 50 || || || || || || 190-191 || 19h42 || HLS091828 || faintlisst || 308 || 49 || || || || || || 192-193 || 19h50 || HLS091828 || faintlisst || 308 || 48 || || || || || || 194-195 || 19h59 || HLS091828 || faintlisst || 308 || 47 || || || || || || 196-197 || || HLS091828 || faintlisst || 308 || 47 || || || || || || 198 || 20h11 || 0923+392 || track || 291 || 43 || -6 -2 -1.6 || 0.659 || || || || 199 || 20h11 || 0923+392 || faintliss || 291 || 43 || -6 -2 -1.6 || 0.659 || -7,2;-7,0 Fw23,19 Fl2.3,4.1Jy || || || 200-203 || 20h18 || DIY || skydip scan 202 || 291 || || -6 -2 -1.6 || 0.677-0.614 || || No problem || || 204 || 20h27 || 0923+392 || track || 292 || 40 || -6 -2 -1.6 || 0.659 || || || || 205 || 20h28 || 0923+392 || pointliss || 292 || 40 || -7 0 -1.6 || 0.640 || 2mm: -8,1 || || || 206 || 20h30 || 3C279 || track || 198 || 45 || -7 0 -1.6 || 0.594 || || || || 207 || 20h34 || 3C279 || pointliss || 199 || 45 || -7 0 -1.6 || || -9 2;-9 1;Fw 27,20;Fl7,14Jy || || || 208 || 20h38 || 3C279 || focusp2 || 199 || 45 || -7 0 -1.6 || || 0.27 -0.67 || Big change as expected || || 209 || 20h42 || 3C279 || pointliss || 201 || 45 || -9 2 -0.5 || || || Very large beams? || || 210 || 20h47 || 3C279 || focusp2 || 203 || 44 || -9 2 -0.5 || || -2.4 -1.9 || || || 211 || 20h49 || 3C279 || focusp || 203 || 44 || -9 2 -2.0 || || -1.3 ? || || || 212-216 || 20h54 || 3C279 || focusliss || 203 || 44 || -9 2 -2.0 || || Focus is -2.7!! || -1.5,-2.1,-2.7,-0.9,-0.3 two last scans many 1mm pixels lost || || 217 || 21h08 || 3C279 || focusp || 209 || 42 || -10 -1 -3.0 || || -2.5 found 1mm || || || 218 || 21h13 || 3C279 || pointliss || 211 || 42 || -10 -1 -2.5 || || -13 1;-13 1Fw23,22Fl11,19Jy || strange || || 219-223 || 21h21 || 3C279 || focusliss || 213 ||41 || -10 -1 -2.5 || || -7,0 -3.7! || -2.5 -3.1 -3.7 -1.9 -1.3 || || 224-228 || 21h21 || 3C279 || focusliss || 213 || 41 || -10 -1 -2.5 || 0.490 || -4 1 foc:-3.5 || -4 -4.6 -5.2 -3.4 -2.8 || || 229 || 21h21 || 3C279 || focusliss || 220 || 38 || -4 -1 -3.5 || || || canceled reboot kid readouts + see note above about NCS temperature control|| || 230-234 || 21h52 || 3C279 || focusliss || || || -4 -1 -1.5 || || || -1.5 -2.1 -2.7 -0.9 -0.3 pb with data? ||