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MOPEX User's Guide - IRSA

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COMMAND LINE INPUT<br />

&APERTURE<br />

N_Apertures = 3,<br />

Aperture_Radius_1 = 5.0,<br />

Aperture_Radius_2 = 6.0,<br />

Aperture_Radius_3 = 7.0,<br />

Min_Number_Pixels = 10,<br />

Annulus_Compute_Type = 'mode',<br />

Inner_Radius = 15,<br />

Outer_Radius = 25,<br />

Use_Annulus = 1,<br />

&END<br />

OUTPUT<br />

<strong>MOPEX</strong> User’s <strong>Guide</strong><br />

Output Table (aperture.tbl): The aperture fluxes are written into the extract table, along with<br />

the number of bad pixels in each aperture. A separate aperture table is also created.<br />

DISCUSSION<br />

The default for this module is to work on median-filtered background-subtracted images if<br />

they are there. Because subtracting the background can be difficult, it is generally better to<br />

work on the original images, unless the background is complex or you are sure it has been<br />

correctly subtracted. To do this, uncheck the Use Background Subtracted Image for Aperture<br />

box in the APEX Settings module.<br />

For more details, see §8.8 Aperture Photometry.<br />

6.5.20 APEX Modules: Select<br />

Command Line Equivalent: run_select<br />

Default Output Directory: <br />

De pe nds On: Source Estimate<br />

Relevant Pipelines: All<br />

PURPOSE<br />

Point Source Extraction (APEX) 152<br />

APEX Modules

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