ADDNCCAL

Name

addnccal

Purpose

Add calibration frames for entries in the nasacam calib data base

Description

Searches the database nasacam.calib table for entries with
status=UNKNOWN and attempts to generate appropriate "sub-supers" which
are superbias, dark, or flat frames for the given range of images. The
constraints on nasacam flat taking (in particular) are such that these
super frames will usually need to be combined with others nearby in time,
thus the term "sub-supers." After generating (without interaction) what it
can, addnccal will update the calname for the rows processed. Ordinarily
biases are set to status "GOOD" or "PENDING" based on automatic criteria
and flats are set PENDING prior to inspection via the tool chknccal.

Calling Sequence

addnccal

Inputs

Optional Input Parameters

Keyword Input Parameters

ABSMOMENT - A 2 element vector giving the maximum value for absolute mean and
standard deviation of any superbias generated. This is the
baseline test for sub super biases. Current default is
[ 5.0, 5.0] based on a cropping region.
CALROOT - string giving the path to locate the calibration images referenced
in the data base entries, and created by addnccal.
The current default is
'/kolvir/data1/buie/rawfits/nasacamcal' (on kolvir).
COLDTEMPS- An vector of 4 elements giving, respectively, the expected
CCD detector temperature, the expected cold head temperature,
and the maximum absolute deviations from those levels for
individual bias or flat frames to be considered good. The NASACAM
default is [-100.0, -160.0, 20.0, 50.0].
This keyword is not implemented and is currently a no-op.
CROP - region of original image to save, [x1,x2,y1,y2]
default is 2006 NASACAM default of [34, 2064, 2, 2046].
DATABASE - Name of MYSQL database for calibration entries.
The default is 'nasacam'.
EARLIEST - string in MYSQL date format giving the earliest row in the
data base to process. The default is the beginning of time.
IMGROOT - string giving the path to locate the image files referenced
in the data base entries. The default is
'/kolvir/data1/buie/rawfits' (on kolvir).
LATEST - string in MYSQL date format giving the latest row in the
data base to process. The default is the end of time.
MASTBIAS - Absolute path to a fits file which contains a superbias
considered good. Superbiases generated by addnccal will be
subtracted from this, and the mean and standard deviation
of the resulting array is compared with MASTMOMENT. If not
specified, this comparison is not made.
This keyword is not implemented and is currently a no-op.
MASTMOMENT- A 2 element vector giving the maximum absolute mean and standard
deviation of the difference array (against MASTBIAS) for a
generated sub-super-bias to be considered good. MASTMOMENT is
only meaningful if MASTBIAS is specified. The default is
[ 300.0, 30.0]
This keyword is not implemented and is currently a no-op.
NOMEDIANFLAT- Flag, if set, the JUSTMEDIAN flag is not set to MKFLAT
when making flats. The default is to set JUSTMEDIAN,
which is passed to mkflat and precludes noise clipping
and averaging, when making flats.
OLEVEL - a 4 element vector giving the expected overscan level and
the overscan standard deviation, and
the maximum permitted absolute deviations from those levels for
individual bias or flat frames to be considered good. The NASACAM
default is [2800.0, 10.0, 300.0, 30.0].
This keyword is not implemented and is currently a no-op.
OVERSCAN - column overscan region to use for frame bias level,
default is 2006 NASACAM default of [2074, 2103].
RDNOISE - Read noise of CCD, DN/pixel, default is 2006 NASACAM default of
9.0
SCALE - For flats, 4 element vector which, if provide, defines the
array dimensions that are used to scale the mean
of the arrays before combining. If combined in this
manner, the arrays are combined weighted by the means.
[x1,x2,y1,y2]
These coordinates apply to the pixel locations AFTER cropping.
The default is to use the center 50% of the image but not any
bigger than 200x200 subsection at the center.
This keyword is passed transparently to mkflat.
TABLENAME- Name of table in MYSQL database for calibration entries.
The default is 'calib'.
TEST - Flag, if set, addnccal prints the mkbias, mkflat, and db
update commands without running them. It makes the cal
subdirectories only.

Outputs

No outputs for this procedure.

Keyword Output Parameters

Common Blocks

Side Effects

Data base entries are updated and calibration superframes are placed in
CALROOT. New subdirectories will generally be created in CALROOT.
The calibration superframe outputs will follow the naming convention
YYYYMMDD.suf
where suf is n.b1 for superbiases
and n.f1.f2 for superflats
where n represents the ordinal of the entry for that night among
raw calibration images of that class, and f1 and f2 are
positions on the NASACAM filter wheel.
FOR EXAMPLE, if 10 biases and 5 flats each in B,V and methane
were taken at each twilght for 20060715, then the cal files
would be called
20060715.1.b1 20060715.1.11.8 20060715.1.12.2 20060715.1.12.3
20060715.2.b1 20060715.2.11.8 20060715.2.12.2 20060715.2.12.3

Restrictions

Assumes images are located in subdirectories named YYYYMMDD for each night.
Places calibration products in paths named YYYY/MM/DD for each night.
It currently processes data ONLY for the NASACAM CCD on the 31", and there
is no support for dark images.
Image frame numbers must be in the range 1-999 inclusive.

Procedure

Modification History

2006/7/15, Written by Peter L. Collins, Lowell Observatory
2006/7/24, PLC, modified after adding new column startime to calib table,
adding "PENDING" as a value for status,
changes to order of bias/flat evaluation- in
particular, designed to make good/bad choice
on sub-super-bias whenever possible automatically.
2006/07/26, PLC,added support from empty returns from mysqlquery.
2006/07/27, PLC,general cleanup and mark unimplemented keywords in header.