SofiaChoppingInfo¶

class sofia_redux.scan.custom.sofia.info.chopping.SofiaChoppingInfo[source]¶

Bases: InfoBase

Initialize the SOFIA chopping information.

Contains information on the SOFIA chop parameters.

Attributes Summary

`log_id`	Return the string log ID for the info.
`volts_to_angle`

Methods Summary

`apply_configuration`()	Update chopping information with FITS header information.
`edit_header`(header)	Edit an image header with available information.
`get_table_entry`(name)	Given a name, return the parameter stored in the information object.

Attributes Documentation

log_id¶

Return the string log ID for the info.

The log ID is used to extract certain information from table data.

Returns:

str

volts_to_angle = <Quantity 33.394 arcsec / V>¶

Methods Documentation

apply_configuration()[source]¶

Update chopping information with FITS header information.

Updates the chopping information by taking the following keywords from the FITS header:

CHOPPING - Whether chopping is enabled for the scan (bool)
CHPFREQ - The chopping frequency in Hz
CHPPROF - The 2-POINT or 3-POINT point chopping profile (str)
CHPSYM - Whether the chopping is symmetrical or asymmetric (str)
CHPAMP1 - The first chop amplitude in arcseconds
CHPAMP2 - The second chop amplitude in arcseconds
CHPCRSYS - The MCCS chopping coordinate system (str)
CHPANGLE - The angle in the sky coordinate reference frame (degrees)
CHPTIP - The tip in the sky coordinate reference frame (arcseconds)
CHPTILT - The tilt in the sky coordinate reference frame (arcseconds)
CHPPHASE - The chopping phase in milliseconds.

Returns:

None

edit_header(header)[source]¶

Edit an image header with available information.

Parameters:

headerastropy.fits.Header: The FITS header to apply.

Returns:

None

get_table_entry(name)[source]¶

Given a name, return the parameter stored in the information object.

Note that names do not exactly match to attribute names.

Parameters:

namestr

Returns:

value

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SofiaChoppingInfo¶