#----------------------------------------------- # NGC3938, Raster, Night 5, March 2008 run #----------------------------------------------- ------------------------------------------------------------------------------- INITIAL REDUCTION USING NEAREST SPREAD: # Full cube for observations on 20080314 makecube in="a20080314_000*_flagspike.sdf" autogrid=true crota=0 pixsize=7.2761 sparse=false spread='nearest' specbounds=\"420.0 1230.0\" out=ngc3938_prelim20080314_wholenight reset # Projection parameters used: # CRPIX1 = 27.4265305995941 # CRPIX2 = 26.9102040827274 # CRVAL1 = 178.205416666667 ( RA = 11:52:49.3 ) # CRVAL2 = 44.1213888888889 ( Dec = 44:07:17 ) # CDELT1 = -0.00202113893296984 ( -7.3 arcsec ) # CDELT2 = 0.00202113893296984 ( 7.3 arcsec ) # CROTA2 = 0 # # Output cube pixel bounds: ( -24:27, -25:27, -952:951 ) # Output cube WCS bounds: # Right ascension: 11:52:31.7 -> 11:53:06.8 # Declination: 44:04:05 -> 44:10:30 # Optical velocity (LSB): 419.8622 -> 1230.291 km/s mfittrend ngc3938_prelim20080314_wholenight ranges=\"420 740 900 1230\" order=3 axis=3 out=ngc3938_prelim20080314_wholenight_base3 # Fitting NDF Axis 3, using ranges in current co-ordinate Frame (pixels): # 740.2765 : 420.2867 km/s (197 : 950) # 1229.865 : 900.3145 km/s (-952 : -179) sub ngc3938_prelim20080314_wholenight ngc3938_prelim20080314_wholenight_base3 ngc3938_prelim20080314_wholenight_sub3 compave ngc3938_prelim20080314_wholenight_sub3 ngc3938_prelim20080314_wholenight_sub3_20kms compress="[1,1,47]" stats 'ngc3938_prelim20080314_wholenight_sub3_20kms(~15,~15,:)' | grep Standard # Standard deviation : 0.0180638 stats 'ngc3938_prelim20080314_wholenight_sub3_20kms(~15,~15,420.0:740.0)' | grep Standard # Standard deviation : 0.0159289 stats 'ngc3938_prelim20080314_wholenight_sub3_20kms(~15,~15,900.0:1230.0)' | grep Standard # Standard deviation : 0.0176356 # We have reached the target rms with just 4 MSBs. No further data needed. ------------------------------------------------------------------------------- # Now SincSinc makecube in="a*" autogrid=true crota=0 pixsize=7.2761 sparse=false spread='sincsinc' params='[1,2]' specbounds=\"420.0 1230.0\" out=ngc3938_sincsinc reset # Projection parameters used: # CRPIX1 = 27.4265305995941 # CRPIX2 = 26.9102040827274 # CRVAL1 = 178.205416666667 ( RA = 11:52:49.3 ) # CRVAL2 = 44.1213888888889 ( Dec = 44:07:17 ) # CDELT1 = -0.00202113893296984 ( -7.3 arcsec ) # CDELT2 = 0.00202113893296984 ( 7.3 arcsec ) # CROTA2 = 0 # # Output cube pixel bounds: ( -24:27, -25:27, -952:951 ) # Output cube WCS bounds: # Right ascension: 11:52:31.7 -> 11:53:06.8 # Declination: 44:04:05 -> 44:10:30 # Optical velocity (LSB): 419.8622 -> 1230.291 km/s # # #WARNING: Cannot create output Tsys values. ndfcopy in=ngc3938_sincsinc'(-11:15,-11:16,)' out=ngc3938_sincsinc_trim mfittrend ngc3938_sincsinc_trim ranges=\"420 740 900 1230\" order=3 axis=3 out=ngc3938_sincsinc_trim_base3 # Fitting NDF Axis 3, using ranges in current co-ordinate Frame (pixels): # 740.2765 : 420.2867 km/s (197 : 950) # 1229.865 : 900.3145 km/s (-952 : -179) sub ngc3938_sincsinc_trim ngc3938_sincsinc_trim_base3 ngc3938_sincsinc_trim_sub3 compave ngc3938_sincsinc_trim_sub3 ngc3938_sincsinc_trim_sub3_20kms compress="[1,1,47]" stats 'ngc3938_sincsinc_trim_sub3_20kms(~15,~15,:)' | grep Standard # Standard deviation : 0.0165097 stats 'ngc3938_sincsinc_trim_sub3_20kms(~15,~15,420.0:740.0)' | grep Standard # Standard deviation : 0.0144951 stats 'ngc3938_sincsinc_trim_sub3_20kms(~15,~15,900.0:1230.0)' | grep Standard # Standard deviation : 0.0160691 ------------------------------------------------------------------------------- BASELINE MASK PRODUCTION: # First produce a smoothed cube to identify the line and make masks with mfittrend block in=ngc3938_sincsinc_trim out=ngc3938_sincsinc_trim_vsmooth 'axes=[1,3] box=[1,25]' block in=ngc3938_sincsinc_trim_vsmooth out=ngc3938_sincsinc_trim_smooth 'axes=[1,2] box=[3,3]' mfittrend in=ngc3938_sincsinc_trim_smooth axis=3 order=3 out=ngc3938_sincsinc_trim_smooth_base3 auto mask=ngc3938_sincsinc_trim_smooth_basemsk3 method=single variance=false subtract=false 'clip=[2,3]' mfittrend in=ngc3938_sincsinc_trim_smooth axis=3 order=3 out=ngc3938_sincsinc_trim_smooth_base3g auto mask=ngc3938_sincsinc_trim_smooth_basemsk3g method=global variance=false subtract=false 'clip=[2,2.5,3]' add ngc3938_sincsinc_trim_smooth_basemsk3 ngc3938_sincsinc_trim_smooth_basemsk3g ngc3938_trim_basemask0 chpix in=ngc3938_trim_basemask0 out=ngc3938_trim_basemask0_end1 section=\":,:,197:951\" newval=0 chpix in=ngc3938_trim_basemask0_end1 out=ngc3938_trim_basemask0_end2 section=\":,:,-953:-179\" newval=0 cadd ngc3938_trim_basemask0_end2 1 ngc3938_trim_basemask1 mult ngc3938_sincsinc_trim ngc3938_trim_basemask1 ngc3938_sincsinc_trim_masked mfittrend ngc3938_sincsinc_trim_masked ranges=\"420 1230\" order=3 axis=3 out=ngc3938_sincsinc_trim_masked_base3 # Fitting NDF Axis 3, using ranges in current co-ordinate Frame (pixels): # 1229.865 : 420.2867 km/s (-952 : 950) sub ngc3938_sincsinc_trim ngc3938_sincsinc_trim_masked_base3 ngc3938_sincsinc_trim_submask3 compave ngc3938_sincsinc_trim_submask3 ngc3938_sincsinc_trim_submask3_20kms compress="[1,1,47]" stats 'ngc3938_sincsinc_trim_submask3_20kms(~15,~15,:)' | grep Standard # Standard deviation : 0.0162694 stats 'ngc3938_sincsinc_trim_submask3_20kms(~15,~15,420.0:740.0)' | grep Standard # Standard deviation : 0.0146393 stats 'ngc3938_sincsinc_trim_submask3_20kms(~15,~15,900.0:1230.0)' | grep Standard # Standard deviation : 0.0161724 ------------------------------------------------------------------------------- CREATE MOMENT MAPS: mkdir Moment_sincsinc cp ngc3938_sincsinc_trim_submask3.sdf Moment_sincsinc/ngc3938_sincsinc_trim_submask3_rembsl.sdf cp ngc3938_trim_basemask1.sdf Moment_sincsinc/ngc3938_sincsinc_trim_submask3_msk.sdf cp ../NGC2976/Moment_sincsinc/REDUCE_SCIENCE_GRADIENT Moment_sincsinc/ cd Moment_sincsinc *Edit RSG Script: emacs REDUCE_SCIENCE_GRADIENT & set object = "ngc3938_sincsinc_trim_submask3" set vrange = "low=740 high=900" # Quick jumps to repeat parts of the reduction #goto STEP1a #goto STEP1b #goto STEP2 goto STEP3 foreach rmslev (2.0 2.5 3.0 3.5 4.0 4.5 5.0) **Remove trim function: # Multiply baselined cube with clump mask ${kap}/mult ${sdf} ${sdf}_findclump${rmslab} ${sdf}_clmsk${rmslab} # Trim the noisy edges # ${kap}/ndfcopy temp'(-26:26,-36:40,)' ${sdf}_clmsk${rmslab} \rm -f ${sdf}_mask_temp1.sdf ${sdf}_mask_temp2.sdf >& /dev/null ./REDUCE_SCIENCE_GRADIENT # RMS MASKED SMOOTHED CUBE(-6:10,-5:10,-894:893): 0.00852453235198691 Rotate intvel maps: rotate ngc3938_sincsinc_trim_submask3_intvel20 ngc3938_sincsinc_trim_submask3_intvel20_rot angle=! rotate ngc3938_sincsinc_trim_submask3_intvel25 ngc3938_sincsinc_trim_submask3_intvel25_rot angle=! rotate ngc3938_sincsinc_trim_submask3_intvel30 ngc3938_sincsinc_trim_submask3_intvel30_rot angle=! rotate ngc3938_sincsinc_trim_submask3_intvel35 ngc3938_sincsinc_trim_submask3_intvel35_rot angle=! rotate ngc3938_sincsinc_trim_submask3_intvel40 ngc3938_sincsinc_trim_submask3_intvel40_rot angle=! rotate ngc3938_sincsinc_trim_submask3_intvel45 ngc3938_sincsinc_trim_submask3_intvel45_rot angle=! rotate ngc3938_sincsinc_trim_submask3_intvel50 ngc3938_sincsinc_trim_submask3_intvel50_rot angle=! (contoured totint maps and velocity maps then made using gaia) ------------------------------------------------------------------------------- MAKE CUBES DISPLAYING S/N RATIO: collapse in=ngc3938_sincsinc_trim_submask3.sdf low=420 high=740 axis=vopt out=sigma_low estimator=sigma reset collapse in=ngc3938_sincsinc_trim_submask3.sdf low=900 high=1230 axis=vopt out=sigma_high estimator=sigma reset block ngc3938_sincsinc_trim_submask3_20kms.sdf ngc3938_sincsinc_trim_submask3_20kms_bin5.sdf axes="[2,3]" box="[1,5]" estimator=mean block ngc3938_sincsinc_trim_submask3_20kms.sdf ngc3938_sincsinc_trim_submask3_20kms_bin9.sdf axes="[2,3]" box="[1,9]" estimator=mean manic in=sigma_low out=sigma_low_3d axes="[1,2,0]" lbound=-19 ubound=40 reset wcscopy ndf=sigma_low_3d like=ngc3938_sincsinc_trim_submask3_20kms_bin5.sdf confirm=false reset cdiv sigma_low_3d 6.85565 sigma_low_20kms div ngc3938_sincsinc_trim_submask3_20kms_bin5.sdf sigma_low_20kms.sdf ngc3938_sincsinc_trim_submask3_20kms_bin5_SN.sdf div ngc3938_sincsinc_trim_submask3_20kms_bin9.sdf sigma_low_20kms.sdf ngc3938_sincsinc_trim_submask3_20kms_bin9_SN.sdf ------------------------------------------------------------------------------- MAKE TOTINT20 NOISE and SN MAPS: mkdir noise_maps cd noise_maps cp ../sigma_high.sdf . cp ../sigma_low.sdf . cp ../Moment_sincsinc/ngc3938_sincsinc_trim_submask3_rembsl_findclump20.sdf . cp ../Moment_sincsinc/ngc3938_sincsinc_trim_submask3_totint20.sdf . add sigma_high sigma_low out=sigma_sum cdiv sigma_sum.sdf 2 sigma_avg collapse in= ngc3938_sincsinc_trim_submask3_rembsl_findclump20.sdf out=test0 axis=vopt estimator=sum wlim=0.0 (must make mask to multiply by collapsed image so values are real, not integer, otherwise sqrt function below will round to nearest integer) cmult sigma_avg 0 test1 cadd test1 1.0 test2 mult test2 test0 test3 (now have same collapsed image with real, not integer values) maths exp="sqrt(IA)" out=test4 IA=test3 cmult test4 0.42 test5 mult sigma_avg test5 ngc3938_totint20_noise div ngc3938_sincsinc_trim_submask3_totint20.sdf ngc3938_totint20_noise ngc3938_totint20_SN (contoured SN maps then made using gaia) ------------------------------------------------------------------------------- TRIM OUT NOISE FROM TOTINT20 MAP: *Try trimming regions with SN < 2.0: thresh ngc3938_totint20_SN.sdf thrlo=2 newlo=bad thrhi=500 newhi=bad out=ngc3938_totint20_SN_thresh2 # There were 292 elements changed in the DATA array below the threshold. # There were 0 elements changed in the DATA array above the threshold. cmult ngc3938_totint20_SN_thresh2.sdf 0 ngc3938_zeroall_2 cadd ngc3938_zeroall_2 1 ngc3938_msk_2 mult ngc3938_msk_2.sdf ngc3938_sincsinc_trim_submask3_totint20.sdf ngc3938_totint20_noisetrim2 *Try trimming regions with SN < 1.5: thresh ngc3938_totint20_SN.sdf thrlo=1.5 newlo=bad thrhi=500 newhi=bad out=ngc3938_totint20_SN_thresh15 # There were 236 elements changed in the DATA array below the threshold. # There were 0 elements changed in the DATA array above the threshold. cmult ngc3938_totint20_SN_thresh15.sdf 0 ngc3938_zeroall_15 cadd ngc3938_zeroall_15.sdf 1 ngc3938_msk_15 mult ngc3938_msk_15.sdf ngc3938_sincsinc_trim_submask3_totint20.sdf ngc3938_totint20_noisetrim_15 ------------------------------------------------------------------------------- MAKE TOTINT30 NOISE and SN MAPS: cp ../Moment_sincsinc/ngc3938_sincsinc_trim_submask3_rembsl_findclump30.sdf . cp ../Moment_sincsinc/ngc3938_sincsinc_trim_submask3_totint30.sdf . collapse in= ngc3938_sincsinc_trim_submask3_rembsl_findclump30.sdf out=test6 axis=vopt estimator=sum wlim=0.0 mult test2 test6 test7 maths exp="sqrt(IA)" out=test8 IA=test7 cmult test8 0.42 test9 mult sigma_avg test9 ngc3938_totint30_noise div ngc3938_sincsinc_trim_submask3_totint30.sdf ngc3938_totint30_noise ngc3938_totint30_SN (contoured SN maps then made using gaia)