Comments (6)
@segasai has imSim up and running with the LSST stack and generated at image using the instance catalog.
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Using ugali and dsphsim module to simulation the spatial and color magnitude distribution of a dwarf galaxy with Mv = -12, rh = 300 pc, and D = 1 Mpc. LSST single-pass g-band detection threshold (approximate) is shown with black dashed line.
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Adapting output to match the Instance Catalog interface expected by imSim and phosim. Started with tiny_instcat.txt as an example. Stars in the dwarf galaxy are modeled as individual point sources when they are brighter that g < 25 mag. Below this threshold we generate a single extended source with an exponential profile (really a sersic2d
model) with a normalization set by the integrated flux of the sub-threshold sources. A snippet of the catalog is pasted below
# instcat file written by dsphsim
rightascension 54.0
declination -54.0
mjd 59797.285409
altitude 43.6990272
azimuth 73.7707957
filter 1
rotskypos 69.092293
rottelpos 0.0
dist2moon 145.1095257
moonalt -11.1383568
moondec -18.770212
moonphase 59.628883
moonra 230.9832941
nsnap 2
obshistid 1
seed 1
seeing 0.761376
rawSeeing 0.761376
FWHMgeom 1.210734
FWHMeff 1.409653
sunalt -59.1098785
vistime 33.0
object 0 54.000000 -54.000000 13.328449 starSED/phoSimMLT/lte031-4.5-1.0a+0.4.BT-Settl.spec.gz 0 0 0 0 0 0 sersic2d 36.857143 36.857143 0 1 none CCM 0.0 3.1
object 3659 54.003472 -54.004041 24.874301 starSED/phoSimMLT/lte031-4.5-1.0a+0.4.BT-Settl.spec.gz 0 0 0 0 0 0 point none CCM 0.0 3.1
object 5532 54.065444 -53.994095 24.884787 starSED/phoSimMLT/lte031-4.5-1.0a+0.4.BT-Settl.spec.gz 0 0 0 0 0 0 point none CCM 0.0 3.1
object 6355 53.993503 -53.988691 24.966792 starSED/phoSimMLT/lte031-4.5-1.0a+0.4.BT-Settl.spec.gz 0 0 0 0 0 0 point none CCM 0.0 3.1
object 11194 54.043986 -53.924732 24.560148 starSED/phoSimMLT/lte031-4.5-1.0a+0.4.BT-Settl.spec.gz 0 0 0 0 0 0 point none CCM 0.0 3.1
object 24307 54.048338 -53.978983 24.075011 starSED/phoSimMLT/lte031-4.5-1.0a+0.4.BT-Settl.spec.gz 0 0 0 0 0 0 point none CCM 0.0 3.1
object 25715 54.004695 -53.987490 24.010676 starSED/phoSimMLT/lte031-4.5-1.0a+0.4.BT-Settl.spec.gz 0 0 0 0 0 0 point none CCM 0.0 3.1
object 27747 53.995604 -54.025702 23.027644 starSED/phoSimMLT/lte031-4.5-1.0a+0.4.BT-Settl.spec.gz 0 0 0 0 0 0 point none CCM 0.0 3.1
object 32411 54.020216 -54.016401 24.889610 starSED/phoSimMLT/lte031-4.5-1.0a+0.4.BT-Settl.spec.gz 0 0 0 0 0 0 point none CCM 0.0 3.1
object 33282 54.006759 -54.008692 24.684490 starSED/phoSimMLT/lte031-4.5-1.0a+0.4.BT-Settl.spec.gz 0 0 0 0 0 0 point none CCM 0.0 3.1
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@rbliu has put together a script to run LSST source extraction on these images. @segasai has generated g- and r-band images and can create a CMD!
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Wednesday's hack is done and this issue is successfully closed.
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Related Issues (16)
- Content for Dark Matter Graph HOT 3
- Prototype for Dark Matter Graph HOT 2
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