Extract SDSS field information and PSF

Created: 2012-07-26 17:59:02 Last updated: 2012-09-07 10:21:26

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This workflow download from SDSS the information about the field of the image. It receives as a input a table. Each row of this table has information of one image, specifically it contains run, rerun, camcol and field, needed to query SDSS and get the saturation, gain, Extinction coefficient, Zero-point.

The workflow also get the band of the image from its header and build a new table with all this data, needed for applications like Sextractor.

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Workflow Components

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Titles (0)

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Dependencies (1)

Inputs (1)

Name	Description
input_table

Processors (19)

Name	Type	Description
extract_info	beanshell	Script RA_COLUMN = 0; DEC_COLUMN = 1; RUN_COLUMN = 2; RERUN_COLUMN = 3; CAMCOL_COLUMN = 4; FIELD_COLUMN = 5; FILE_COLUMN = 6; BARRED_COLUMN = 7; PSFIELD_COLUMN = 8; PSF_COLUMN = 9; DECs = new ArrayList(); RAs = new ArrayList(); RUNs = new ArrayList(); RERUNs = new ArrayList(); CAMCOLs = new ArrayList(); FIELDs = new ArrayList(); FILEs = new ArrayList(); BARREDs = new ArrayList(); PSFIELDs = new ArrayList(); PSFs = new ArrayList(); for (line : lines.split("\n")) { split = line.split("\\s"); DECs.add(split[RA_COLUMN]); RAs.add(split[DEC_COLUMN]); RUNs.add(split[RUN_COLUMN]); RERUNs.add(split[RERUN_COLUMN]); CAMCOLs.add(split[CAMCOL_COLUMN]); FIELDs.add(split[FIELD_COLUMN]); FILEs.add(split[FILE_COLUMN]); BARREDs.add(split[BARRED_COLUMN]); PSFIELDs.add(split[PSFIELD_COLUMN]); PSFs.add(split[PSF_COLUMN]); }
SDSS_DR7	rest
SR_value	stringconstant	Value 1
extract_header_band	externaltool
header_value	stringconstant	Value FILTER
extract_filters_for_rows	externaltool
extract_filters_for_columns	externaltool
Select_Rows	tpipe
Select_columns	tpipe
download_psf	externaltool
read_psfield	externaltool
Tool	externaltool
Format_conversion	tpipe
formatTableIn_value	stringconstant	Value votable
formatTableOut_value	stringconstant	Value ascii
Write_Text_File	localworker	Script BufferedWriter out; if (encoding == void) { out = new BufferedWriter(new FileWriter(outputFile)); } else { out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outputFile), encoding)); } out.write(filecontents); out.flush(); out.close(); outputFile = filecontents;
encoding_value	stringconstant	Value utf-8
outputFile_value	stringconstant	Value drfield.txt
Merge_String_List_to_a_String	localworker	Script String seperatorString = "\n"; if (seperator != void) { seperatorString = seperator; } StringBuffer sb = new StringBuffer(); for (Iterator i = stringlist.iterator(); i.hasNext();) { String item = (String) i.next(); sb.append(item); if (i.hasNext()) { sb.append(seperatorString); } } concatenated = sb.toString();

Beanshells (1)

Name	Description	Inputs	Outputs
extract_info		lines	DECs RAs RERUNs RUNs CAMCOLs FIELDs FILEs BARREDs PSFIELDs PSFs

Outputs (4)

Name	Description
field_votable
path_psf
path_psf_fits
lines

Datalinks (46)

Source	Sink
input_table	extract_info:lines
extract_info:RAs	SDSS_DR7:RA
extract_info:DECs	SDSS_DR7:DEC
SR_value:value	SDSS_DR7:SR
extract_info:FILEs	extract_header_band:path
header_value:value	extract_header_band:header
extract_info:CAMCOLs	extract_filters_for_rows:camcol
extract_info:FIELDs	extract_filters_for_rows:field
extract_info:RERUNs	extract_filters_for_rows:rerun
extract_info:RUNs	extract_filters_for_rows:run
extract_header_band:STDOUT	extract_filters_for_columns:band
SDSS_DR7:responseBody	Select_Rows:voTable
extract_filters_for_rows:STDOUT	Select_Rows:filter
Select_Rows:outputTable	Select_columns:voTable
extract_filters_for_columns:STDOUT	Select_columns:filter
extract_info:CAMCOLs	download_psf:camcol
extract_info:FIELDs	download_psf:field
extract_info:PSFIELDs	download_psf:path_psfield
extract_info:RERUNs	download_psf:rerun
extract_info:RUNs	download_psf:run
extract_header_band:STDOUT	read_psfield:band
extract_info:PSFs	read_psfield:path_psf_fits
download_psf:STDOUT	read_psfield:path_psf
Write_Text_File:outputFile	Tool:drfield_file
extract_info:BARREDs	Tool:barred
extract_info:CAMCOLs	Tool:camcol
extract_info:DECs	Tool:dec
extract_info:FIELDs	Tool:field
extract_info:FILEs	Tool:path_image
extract_info:PSFIELDs	Tool:path_psfield
extract_info:PSFs	Tool:path_psf
extract_info:RAs	Tool:ra
extract_info:RERUNs	Tool:rerun
extract_info:RUNs	Tool:run
extract_header_band:STDOUT	Tool:band
Select_columns:outputTable	Format_conversion:voTable
formatTableIn_value:value	Format_conversion:formatTableIn
formatTableOut_value:value	Format_conversion:formatTableOut
encoding_value:value	Write_Text_File:encoding
Format_conversion:outputTable	Write_Text_File:filecontents
outputFile_value:value	Write_Text_File:outputFile
Tool:STDOUT	Merge_String_List_to_a_String:stringlist
Select_columns:outputTable	field_votable
download_psf:STDOUT	path_psf
extract_info:PSFs	path_psf_fits
Merge_String_List_to_a_String:concatenated	lines