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galsci / pysm

PySM 3: Sky emission simulations for Cosmic Microwave Background experiments
https://pysm3.readthedocs.io/
BSD 3-Clause "New" or "Revised" License
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Are there any extra small scales injected beyond \ell~1200 for pysm `d0` and `d1` dust models? #174

Closed yaojian95 closed 7 months ago

yaojian95 commented 8 months ago

Hi all,

I'm using pysm d0 to generate dust maps to test lensing reconstruction methods, but I found the dust models only have signal for multipoles < 1200. The templates for d0 are at nside=512 but originally I thought there are Gaussian small scales injected for arbitrary resolution. So this is not the case?

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zonca commented 7 months ago

see https://pysm3.readthedocs.io/en/latest/#best-practices-for-model-execution for PySM 2 models, you should always run PySM at 512 to avoid ud_grade. the only model with on-the-fly small scales is d11, all other models just have small scales inside the templates. So whatever was the small scales generation done at the template level, that is what we get in PySM for all models except d11.

yaojian95 commented 7 months ago

OK, thanks. I will close the issue.