Image Related Classes
Image Class
azcam.image.Image
Bases: object
Class to create and manipulate the standard azcam image object.
filename = ''
instance-attribute
image filename
filetype = 0
instance-attribute
image file type
is_written = 0
instance-attribute
True when image has been written to disk
make_lockfile = 0
instance-attribute
True to make a lock file when image is written
overwrite = 0
instance-attribute
True to allow overwritting image file
test_image = 0
instance-attribute
True when the image is a test image (overwrite is automatic)
title = ''
instance-attribute
title string
toggle = 0
instance-attribute
True when image is first ready
valid = 0
instance-attribute
True when image is valid
assemble(trim=-1)
Assemble .data into .buffer.
read_file(filename)
Read FITS image file (standard or MEF).
set_scaling(gains=None, offsets=None)
Set gains and offsets for image assembly.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
gains |
list[float] | None
|
gains values for each image section in [e/DN] |
None
|
offsets |
list[float] | None
|
offsets or bias values for each image section |
None
|
write_file(filename, filetype=-1)
Write image to disk file. filetype is 0 for FITS, 1 for MEF, 2 for BIN, 6 for assembled.
Focalplane Class
azcam.image_focalplane.FocalPlane
Bases: ObjectHeaderMethods
The FocalPlane class describes a focalplane layout.
__init__()
Create an instance of FocalPlane class.
get_focalplane()
Returns the focal plane configuration.
get_format()
Return a list of current detector format parameters
get_roi(roi_num=0)
Returns a list of the ROI parameters for the roi_num specified. Currently only one ROI (0) is supported. Returned list format is (first_col,last_col,first_row,last_row,col_bin,row_bin).
roi_reset()
Resets detector ROI values to full frame, current binning.
set_amp_positions()
Calculates amplifiers positions including gaps between amplifiers and CCDs New: Zareba 23Mar2012
set_default_values()
Sets default values for focalplane variables
set_extension_position(xy)
Set the extension position of each amplifier. xy is [[X,Y]] in index numbers, starting at [1,1].
set_focalplane(numdet_x=-1, numdet_y=-1, numamps_x=-1, numamps_y=-1, amp_cfg=[0])
Sets focal plane configuration. Use after set_format() and before set_roi(). This command replaces SetConfiguration. Default focalplane values are set here. numdet_x defines number of detectors in Column direction. numdet_y defines number of detectors in Row direction. numamps_x defines number of amplifiers in Column direction. numamps_y defines number of amplifiers in Row direction. amp_cfg defines each amplifier's orientation (ex: [0,1,2,3]). 0 - normal 1 - flip x 2 - flip y 3 - flip x and y
set_format(ns_total=-1, ns_predark=-1, ns_underscan=-1, ns_overscan=-1, np_total=-1, np_predark=-1, np_underscan=-1, np_overscan=-1, np_frametransfer=-1)
Set the detector format. Args: ns_total: number of visible columns ns_predark: number of physical dark underscan columns ns_underscan: desired number of desired dark underscan columns ns_overscan: number of dark overscan columns np_total: number of visible rows np_predark: number of physical dark underscan rows np_underscan: number of desired dark underscan rows np_overscan: number of desired dark overscan rows np_frametransfer: rows to frame transfer shift
set_jpg_order(indices)
Set JPG image positions.
set_ref_pixel(xy)
Set the reference pixel. xy is [X,Y] in pixels.
set_roi(first_col=-1, last_col=-1, first_row=-1, last_row=-1, col_bin=-1, row_bin=-1, roi_num=0)
Sets the ROI values for a specified ROI. Currently only one ROI (0) is supported. These values are for the entire focal plane, not just one detector.
update_ext_keywords()
Update focal plane keywords for single extension
update_header()
Update headers, reading current data.
update_header_keywords()
Update focal plane keywords in header
WCS Class
azcam.image_focalplane.WCS
Bases: object
get_ra_dec()
Get RA and DEC from telescope header. They should have been copied from telescope header to this image header.