focusops Namespace Reference

Functions
def	calibration
def	focus_old
def	focus
def	visao_focus
def	filter2_focus

Detailed Description

   FocusOps

   The FocusOps python module contains several scripts related to the focus stage..

Function Documentation

def focusops.calibration

(

p = 0

)

   Script to calibrate the focus stage step-ratio.  Requires manual input of a micrometer measurement, in mm.

   Moves to the front or back of the travel range, whichever is closer when invoked.

Definition at line 15 of file focusops.py.

def focusops.focus_old	(		start,
			end,
			stepsz,
			ims = 5,
			settle_delay = 1.
	)

Peform a focus measurement.

First take darks, saving 5*ims images with gimbal in dark position.  The moves from position start to end, in steps of size stepsz.  At each position, the script pauses for settle_delay to allow vibrations to dissipate, and then take ims images.  Images are saved in a sub-directory with the start time (standard VisAO filename) in the name. The visao_focuscurve.pro idl procedure is called to analyze the data, and the preset is updated.

start        = the starting focus position (microns)
end          = the ending focus position (microns)
stepsz       = size of steps to take between focus positions (microns)
ims          = number of images to save at each position
settle_delay = the time, in seconds, to pause after each move to settle vibrations

Definition at line 80 of file focusops.py.

def focusops.focus	(		start,
			end,
			stepsz,
			ims = 5,
			settle_delay = 1.,
			ndarks = -1
	)

Peform a focus measurement.

First take darks, saving 5*ims images with gimbal in dark position.  The moves from position start to end, in steps of size stepsz.  At each position, the script pauses for settle_delay to allow vibrations to dissipate, and then take ims images.  Images are saved in a sub-directory with the start time (standard VisAO filename) in the name. The visao_focuscurve.pro idl procedure is called to analyze the data, and the preset is updated.

start        = the starting focus position (microns)
end          = the ending focus position (microns)
stepsz       = size of steps to take between focus positions (microns)
ims          = number of images to save at each position
settle_delay = the time, in seconds, to pause after each move to settle vibrations

Definition at line 251 of file focusops.py.

def focusops.filter2_focus	(		filters = ["SDSS r'",
			SDSS,
			i,
			SDSS,
			z,
			Long,
			Pass,
			homefirst = 0,
			stepsz = 1000,
			ims = 5,
			settle_delay = 1.
	)

   Peform a focus measurement, in each of a sequence of filter wheel 2 positions.

   The filters are specified as a python list, i.e. ["SDSS r'", "SDSS i'", "SDSS z'"]

   If homefirst is true, the wheel is homed before beginning.
   
   In each filter, the focus script is executed.

Definition at line 382 of file focusops.py.