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OmegaCAM Secondary Standards
Programme
- Table below lists the 22 SA fields considered for OmegaCAM secondary standard fields. Out of this list 8 fields are preliminarily selected: the 8
preceded by an asterisk (*) to have full RA coverage as specified in the Calibration Plan. In addition a reference catalog will also be constructed for the polar field.
- Fields are observed with dithered observations that cover approximately 2×2 square degrees by making observations with each CCD
centered on the specified coordinates under photometric conditions. Here is an example ObservingBlock
- The number of Landolt standard stars, Stetson standard stars, SDSS DR5 stars and stars from the Preparatory Programme (PP) for the OmegaCAM Secondary Standard Program are listed for the OmegaCAM 1.2 square degree fieldsize.
Updated 18/11/2013
Key-band/user-band observations
| Field | RA [deg] | Dec [deg] | #Landolt | #Stetson | #SDSS | #PP | observed | to be observed | comment |
|---|---|---|---|---|---|---|---|---|---|
| SA51 | 112.663 | +29.828 | 0 | 0 | 214 | 0 | |||
| SA57 | 197.171 | +29.384 | 0 | 0 | 952 | 0 | |||
| SA68 | 4.146 | +15.844 | 0 | 0 | 1302 | 0 | |||
| *SA92 | 13.946 | +0.949 | 41 | 213 | 1094 | 6475 | ugrizBV | ||
| SA93 | 28.783 | +0.824 | 4 | 0 | 1128 | 0 | |||
| SA94 | 44.033 | +0.571 | 7 | 0 | 1099 | 0 | |||
| *SA95 | 58.500 | +0.000 | 45 | 426 | 1093 | 0 | ugrizBV | ||
| *SA98 | 103.021 | -0.328 | 46 | 1116 | 0 | 23840 | ugrizBV | ||
| SA100 | 133.529 | +0.546 | 6 | 1 | 3343 | 0 | |||
| *SA101 | 149.112 | -0.386 | 35 | 117 | 1776 | 5591 | ugrizBV | ||
| SA102 | 163.779 | +0.866 | 5 | 66 | 1517 | 0 | |||
| SA103 | 178.779 | +0.556 | 2 | 0 | 1507 | 0 | |||
| *SA104 | 190.488 | -0.529 | 34 | 76 | 1576 | 5701 | g,r,i,z,B(1/2) | u,B(1/2),V | |
| SA105 | 204.533 | +0.676 | 4 | 0 | 2172 | 0 | |||
| SA106 | 220.533 | +0.427 | 2 | 15 | 2864 | 0 | |||
| *SA107 | 234.825 | -0.263 | 28 | 728 | 3889 | 12006 | ugriz | B (TBD 7 out of 33) ,V | |
| SA108 | 248.033 | +0.369 | 6 | 3 | 6148 | 0 | |||
| *SA110 | 280.600 | +0.346 | 39 | 589 | 0 | 38562 | ugrziB | V (TBD 3 out of 33 pointings) | qualify i ( 2013-06-21 and 2013-06-25 |
| SA112 | 310.529 | +0.524 | 7 | 73 | 12087 | 0 | |||
| *SA113 | 325.375 | +0.499 | 42 | 483 | 4046 | 13947 | ugrizBV | ||
| SA114 | 340.529 | +0.689 | 9 | 5 | 1957 | 0 | |||
| SA115 | 355.779 | +0.888 | 10 | 0 | 1170 | 0 |
| filter | exptime (for each individual dither position) |
|---|---|
| (sec) | |
| u | 300, except SA92,95 and 113 |
| g | 60 |
| r | 75 |
| i | 115 |
| z | 75 |
| B | 150 |
| V | 150 |
Composite filter observations
These are in addition to Calibration Plan's Polar Field (PF) observations.
| sequence | field | exp time (sec) | status |
|---|---|---|---|
| per exposure | |||
| 17-point dither | SA107 | 150 | DONE |
| 17-point dither | SA113 | 150 | DONE |
| PF-SA-PF | SA107 | 300 | DONE |
| PF-SA-PF | SA113 | 300 | DONE |
| twilights | 4 exp times, optimized per quadrant. | DONE, verify quality | |
| domeflats | as usual | DONE |
Status
- Preliminary secondary standards catalog and polar field catalog are available in AstroWISE and are delivered to ESO.
- Final catalog delivery was planned for October 2012, but observational progress is too slow currently (June 12).
- Deliveries will be done by the OmegaCAM consortium (contact point: Gijs Verdoes Kleijn).
- Latest status of observations: templates, observing blocks
OBs
- The OBs (as .obx files) that are remaining to be observed (as of 14/12/2011) are in this tar-ball, now including updated exposure times and with RET2ORIG disabled.
- (07mar12): the u-band OBs have been split into OBs of ~1hour execution time: new_sadither_obs_uband.tar.gz
- 13aug13: the composite filter OBs: 17_ccd_composite_sa107.obx, 17_ccd_composite_sa113.obx
