Re: starting multi-aperture photometry

Posted by Allan Meyer on Sep 11, 2013; 4:55am
URL: http://astroimagej.170.s1.nabble.com/starting-multi-aperture-photometry-tp100p102.html

After some browsing here saw another thread that sounded similar, and you had suggested version update.  Did so, now have 2.1.3, but that didn't fix problem.
Here's an original FITS header, with the suspect DATE-OBS as you expected.  Below that after making a copy of the entire FITS image file, and editing that line out using AIJ.  Then closed the copied edited file & re-opened

Original header:
SIMPLE  =                    T / standard conforming (constant T)              
BITPIX  =                   16 / bits per pixel (constant 16 for current imagers
NAXIS   =                    2 / number of axes                                
NAXIS1  =                 1024 / image width                                    
NAXIS2  =                 1024 / image height                                  
ORIGIN  = 'SOFIA   '           / Stratospheric Observatory for Infrared Astronom
DATE    = '2013-07-24T13:35:32.985Z' / When image was created by TA            
HISTORY   Extracted from ARK file: fpi_node_b.ta_fpi.130724133436.ark          
FILENAME= 'FPI.20130724T133532.985Z.fits' / file name (Imager.Time.fits)        
OBSERVAT= 'SOFIA   '           / Stratospheric Observatory for Infrared Astronom
TELESCOP= 'SOFIA   '           / 2.5 meter telescope                            
IMAGTYP = 'CCD_IMAGE'          / image type ('CCD_IMAGE', 'DRKFLD' or 'FLTFLD')
INSTRUME= 'FPI     '           / 'FPI', 'FFI' or 'WFI'                          
DATE-OBS= '2013-07-24'         / date of exposure start                        
UTCSTART= '13:35:29.510Z'      / UTC of exposure start                          
UTCEND  = '13:35:32.010Z'      / UTC of exposure finish                        
EXPTIME =                  2.5 / seconds                                        
BINNING = '1x1     '           / pixel grouping (='1x1', '2x2' or '4x4')        
PIXBITS =                   14 / ADC bits (=8, 14 or 16)                        
DATAMAX =                16383 / detector full well maximum (=2^PIXBITS - 1)    
DATAMIN =                    0 / smallest value from detector                  
IMAGE_SN=                33170 / image id (WFI: 1XXXX, FFI: 2XXXX,FPI: 3XXXX)  
IMAGUSE = 'NORMAL  '           / Image usage                                    
FILTPOS = 'FILTER_ND3'         / filter position                                
FOCLEN  = '5257.0347'          / focal len of camera optics (mm) (100 to 100000)
KWDICT  = 'DCS SI 01 A'        / conforms with DCS keyword dictionary version  
FPIFOCUS= '39.3818 '           / focus pos (mm) (-300 to 300) -1000 unknown)    
FPIRETCL= '-1.0000 '           / reticle brtnes (0.0 to 1.0, or -1 if undef)
_________________________________________________________________

After removing DATE-OBS line from copy of file, saving, closing & re-opening:

SIMPLE  =                    T / Created by ImageJ FITS_Writer                  
BITPIX  =                   16 / number of bits per data pixel                  
NAXIS   =                    2 / number of data axes                            
NAXIS1  =                 1024 / length of data axis 1                          
NAXIS2  =                 1024 / length of data axis 2                          
ORIGIN  = 'SOFIA   '           / Stratospheric Observatory for Infrared Astronom
DATE    = '2013-07-24T13:35:32.985Z'              / When image was created by TA
HISTORY Extracted from ARK file: fpi_node_b.ta_fpi.130724133436.ark            
FILENAME= 'FPI.20130724T133532.985Z.fits'         / file name (Imager.Time.fits)
OBSERVAT= 'SOFIA   '           / Stratospheric Observatory for Infrared Astronom
TELESCOP= 'SOFIA   '                                       / 2.5 meter telescope
IMAGTYP = 'CCD_IMAGE'           / image type ('CCD_IMAGE', 'DRKFLD' or 'FLTFLD')
INSTRUME= 'FPI     '                                     / 'FPI', 'FFI' or 'WFI'
UTCSTART= '13:35:29.510Z'                                / UTC of exposure start
UTCEND  = '13:35:32.010Z'                               / UTC of exposure finish
EXPTIME = 2.5                                                          / seconds
BINNING = '1x1     '                   / pixel grouping (='1x1', '2x2' or '4x4')
PIXBITS = 14                                           / ADC bits (=8, 14 or 16)
DATAMAX = 16383                    / detector full well maximum (=2^PIXBITS - 1)
DATAMIN = 0                                       / smallest value from detector
IMAGE_SN= 33170                   / image id (WFI: 1XXXX, FFI: 2XXXX,FPI: 3XXXX)
IMAGUSE = 'NORMAL  '                                               / Image usage
FILTPOS = 'FILTER_ND3'                                         / filter position
FOCLEN  = '5257.0347'          / focal len of camera optics (mm) (100 to 100000)
KWDICT  = 'DCS SI 01 A'           / conforms with DCS keyword dictionary version
FPIFOCUS= '39.3818 '               / focus pos (mm) (-300 to 300) -1000 unknown)
FPIRETCL= '-1.0000 '               / reticle brtnes (0.0 to 1.0, or -1 if undef)
END                                                                            

stll nothing appears after right mouse clicks on image.  Trying either aperture photometry tool or multiple aperture tool enabled.