[lsst-dm-stack-users] Summer2012 demo for ImSim images?

[Andrew Connolly]

If you put 

qevariation 0.0

in your command file when generating the images it should remove the QE response so you dont need to flat field the data (assuming you are using a central chip and not concerned about vignetting)

cheers
Andy

On Jan 29, 2013, at 3:35 PM, Deborah Joanne Bard wrote:

> Hi Simon,
> I'm using PhoSim 3.2.1, so I will need to make the fake-flats myself.
> What is the correct way to get the astrometry data? Can I simply copy it off the ncsa servers somewhere onto my local machine?
> Thanks,
>   Debbie
> 
> On Tue, 29 Jan 2013, Simon Krughoff wrote:
> 
>> Hi Debbie,
>> 
>> I took a first pass at this on the  wiki page at:
>> https://dev.lsstcorp.org/trac/wiki/installing/Sims
>> 
>> Unfortunately I did this work on an EC2 instance, so you can't follow it
>> exactly.  The biggest problem is the calibration products.  What version of
>> the phosim are you using?  I've got flats for v2 phosim staged at NCSA, but
>> I don't believe we have flats for images produced with phosim v3.
>> 
>> The way we have been getting around the lack of flats for v3 is to use the
>> eimages which now have background in them.  The trick is to turn off the QE
>> variation and then you can treat the eimages like (perfectly) calibrated
>> science images.  I've cc'd Andy C. so he can tell you how to turn off the
>> QE.
>> 
>> Simon
>> 
>> On Tue, Jan 29, 2013 at 1:58 PM, Deborah Joanne Bard <
>> djbard at slac.stanford.edu> wrote:
>> 
>>> Hi All,
>>> I'd like to run the summer2012 stack over ImsIm images. The demo runs
>>> over SDSS data (even though the installation page states it uses ImSim
>>> images!). Does there exist a demo/instructions specifically for ImSim?
>>> Thanks,
>>>  Debbie
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>>> 
>> 
>> 
>> 
>> -- 
>> K. Simon Krughoff
>> University of Washington
>> Department of Astronomy
>> 
>> Physics-Astronomy Bldg.
>> 3910 15th Ave NE
>> Room C319
>> Seattle WA 98195-0002
>> USA
>> 
>> (206)543-9487
>>