Changes between Version 47 and Version 48 of Durham_MDS_Testing
- Timestamp:
- Aug 19, 2009, 4:53:59 AM (17 years ago)
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Durham_MDS_Testing
v47 v48 86 86 [[Image(md08_i_zp.jpg,400px)]] [[Image(md08_z_zp.jpg,400px)]] 87 87 88 g 33.63 +/- 0.05 88 ||Band||MD07||MD08|| 89 ||g ||33.41 +/- 0.08*||33.63 +/- 0.05|| 90 ||r ||34.00 +/- 0.06||34.16 +/- 0.04|| 91 ||i ||34.55 +/- 0.07||33.93 +/- 0.06|| 92 ||z ||33.27 +/- 0.04||33.59 +/- 0.06**|| 89 93 90 r 34.16 +/- 0.04 91 92 i 33.93 +/- 0.06 93 94 z 33.59 +/- 0.06 (cell 074 with a zp of 35.2 has been excluded) 94 * cells 044 and 093 have been excludeded with zp > 33.9[[BR]] 95 ** cell 074 with a zp of 35.2 has been excluded 95 96 96 97 The file attachment:md08_stack_zeropoints lists the zero points for each MD08 skycell in g,r,i and z, both before and after correction for the number of warps. It also tabulates the number of warps for each skycell. The values for MD07 can be found in attachment:md07_stack_zeropoints . … … 98 99 == zeropoints in stacked frames == #zeropoints-stacked 99 100 100 Using the data above, here are the zeropoints per second from the MD08 stacks, presuming 19, 25, 20 & 24 warps went into the g,r,i & z stacks respectively(these numbers came from the dbinfo files for each stack).101 Using the data above, here are the zeropoints per second from the MD08 stacks, presuming 19, 25, 20 & 24 warps went into the g,r,i & z stacks for MD08 and 16, 21, 36, 17 for MD07 (these numbers came from the dbinfo files for each stack). 101 102 102 103 ||filter||MD07||MD08|| 103 ||g|| 104 ||r|| 105 ||i|| 106 ||z|| 104 ||g||24.52||24.48|| 105 ||r||24.74||24.71|| 106 ||i||24.71||24.73|| 107 ||z||24.24||24.19|| 107 108 108 109 Apart from the i-band, these are all slightly brighter (0.05-0.1) than [wiki:GPC_Zero_Points_July09 Eddie Schlafly's values]. There will be correction (of the right sign) for light missing outside the IPP PSF though (''Eugene says this should affect both sets of measurements'').
