# ScienceGrade Summary

Catalog Products >> Product Log >> Summary

Product Identification

Real User | Lisbeth Fogh Olsen
Product Creation Date | 2005-08-26
Product Creation Time | 12:24:03.380
User | eisdata
Session | 75283
Process | Local
Product Type | SINGLE PASSBAND
Extraction Method | SExtractor
Extraction Version | SExtractor 2.3.2
Survey | DPS
Telescope | ESO-NTT
Instrument | SOFI
Region | DEEP1a
Field | deep1a_53
Passband | J
ESO Filter# | #001
Total Exposure Time (seconds) | 4680

Product Information

Instrument | SOFI
Passband | J
ESO Filter# | #001
Magntude Type used for Reporting | MAG_AUTO
Right Ascension (hh:mm:ss.s) | 22:55:33.7
Declinaton (dd:mm:ss.s) | -40:19:25.3
Right Ascension (decimal degrees) | 343.8905
Declinaton (decimal degrees) | -40.3237
Galactic longitude (degrees) | 356.5793
Galactic latitude (degrees) | -62.7105
Total Exposure Time (seconds) | 4680
Image File Name | EIS.2005-07-28T17:05:12.302.fits
Catalog File Name | EIS.2005-08-26T12:39:58.287.fits

Primary Catalog Information

Product Type | SINGLE PASSBAND
Total Area (square degrees) | 0.0089
Trimmed Area (square degrees) | 0.001
Masked Area (square degrees) | 0.0
Number of Extracted Objects | 3310
Number of Saturated Objects | 0
Number of Objects with SExtractor Flag > 0 | 577
Number of Objects inside trimmed area | 441
Number of Objects inside masked area | 0
80% Completeness Limit (Vega) | 23.10
50% Completeness Limit (Vega) | 23.58
Average Magnitude for Objects with MAG_AUTO error = 0.2 (Vega) | 22.65

Science Catalog Information

Magnitude Type used for Filtering | MAG_AUTO
Signal-to-Noise limit | 3.0
Classification Magnitude Limit | 18
ClassStar Limit for selecting stars | 0.9
Limiting Magnitude for Masking | 0
Mask Size Factor (Half Diagonal=factor*A_WORLD) | 20
Maximum Half Diagonal for Masks (arcsecs) | 126
Total Area (square degrees) | 0.0089
Trimmed Area (square degrees) | 0.001
Masked Area (square degrees) | 0.0
Effective Area (square degrees) | 0.0079
Number of Extracted Objects | 1065
Number of Galaxies | 705
Number of Stars | 7
Number of Saturated Objects | 0
Number of Objects with SExtractor Flag > 0 | 326
Number of Objects in trimmed area | 105
Number of Objects in masked area | 0
80% Completeness Limit (Vega) | 21.56
50% Completeness Limit (Vega) | 22.28
Average Magnitude for Objects with MAG_AUTO error = 0.2 (Vega) | 22.65

Catalog Contents

Number of Columns in OBJECTS table | 69
Number of Objects | 1065
Number of Columns in FIELDS table | 110
Number of Entries in FIELDS table | 1
Number of Columns in MASKS table | 1
Number of Masks | 0
Number of Automatic Masks | 0
Number of Masks generated by hand | 0
Number of Columns in FILTER table | 4
Number of Entries in FILTER table | 3334

Instrument Properties

Instrument | SOFI
Pixel Scale (arcsec) | 0.29
Field-of-View (square arcmin) | 0.0067
Gain (electrons/ADU) | -
Non-linearity (ADU) | N/A
Saturation (ADU) | 10000.0
Effective Gain (electrons/) | 28306.1
Effective Non-linearity (ADU) | N/A
Effective Saturation (ADU) | 0.0

Filter Properties

Passband | J
ESO Filter # | #001
Mean Wavelength (Angstrom) | 12534.5
FWHM (Angstrom) | 2887.0
AB correction | 0.904
AB correction applied to magnitudes in the catalog | 0.904
Average E(B-V) | 0.012
Standard Deviation of E(B-V) | 0.00027
Relative Extinction ( A/E(B-V) ) | 0.879
Computed Extinction Correction | 0.011
Computed Standard Deviation of Extinction Correction | 0.00024
Extinction Correction applied to magnitudes in the catalog | 0.011

Telescope Response and Filter Transmission Curves

    Telescope response function (green) and filter transmission (red) curves

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# Primary Attributes

Catalog Products >> Product Log >> Primary Catalog >> Attributes

Product Identification

Real User | Lisbeth Fogh Olsen
Product Creation Date | 2005-08-26
Product Creation Time | 12:24:03.380
User | eisdata
Session | 75283
Process | Local
Product Type | SINGLE PASSBAND
Extraction Method | SExtractor
Extraction Version | SExtractor 2.3.2
Survey | DPS
Telescope | ESO-NTT
Instrument | SOFI
Region | DEEP1a
Field | deep1a_53
Passband | J
ESO Filter# | #001
Total Exposure Time (seconds) | 4680

Product Information

RA (center of catalog) | 343.8905
Dec (center of catalog) | -40.3237
Maximum RA of catalog (degrees) | 343.9480
Minimum RA of catalog (degrees) | 343.8310
RA interval (arcmin) | 0.12
Maximum Dec of catalog (degrees) | -40.2800
Minimum Dec of catalog (degrees) | -40.3690
Dec interval (arcmin) | 0.09
Total area of catalog (square degrees) | 0.0089

Object Statistics

Total Number of Objects | 3310
Number of Objects inside Trimmed Area | 441
Number of Objects inside Masked Area | 0
Number of Objects with SExtractor Flag > 0 | 577

Star/Galaxy Classification

Magnitude Type for Classification | MAG_AUTO
Star/Galaxy Classification Method adopted | Simple Method
Magnitude Limit Applied for "Simple" Star/Galaxy Classification | 18
CLASS_STAR Limit Applied for "Simple" Star/Galaxy Classification | 0.9

Galaxy/Star Classification

    Adopted star/galaxy separation method using stellar index.

Limiting Magnitude (VEGA)

Aperture Magnitudes

Aperture (arcsec) | (S/N = 1) | (S/N = 2) | (S/N = 3) | (S/N = 5) | (S/N = 10)

1.0 | - | 23.96 | 23.44 | 23.15 | 22.34
1.5 | 24.14 | 23.46 | 23.20 | 22.65 | 21.93
2.0 | 23.86 | 23.18 | 22.76 | 22.14 | 21.56
2.5 | 23.49 | 22.87 | 22.54 | 22.07 | 21.29
3.0 | 23.43 | 22.94 | 22.41 | 21.88 | 20.98
3.5 | 23.25 | 22.62 | 22.38 | 21.48 | 21.00
4.0 | 23.05 | 22.74 | 22.09 | 21.57 | 20.87
4.5 | 23.20 | 22.17 | 22.01 | 21.33 | 20.80
5.0 | 23.07 | 22.29 | 21.77 | 21.31 | 20.67
10.0 | 22.32 | 21.46 | 20.93 | 20.42 | 19.60

Other Magnitudes

Magnitude Type | (S/N = 1) | (S/N = 2) | (S/N = 3) | (S/N = 5) | (S/N = 10)

MAG_AUTO | 24.56 | 23.32 | 22.91 | 21.73 | 20.88
MAG_ISO | - | 24.36 | 23.77 | 22.73 | 21.53
MAG_ISOCOR | - | - | 23.47 | 22.52 | 21.28

Simulation Results

Number of Simulated Images | 3
Fading Factor | 3.0,3.5,4.0
Limiting Magnitude at 80% completeness (Vega) | 23.10
Limiting Magnitude at 50% completeness (Vega) | 23.58

Catalog Completeness

    Completeness of the catalog estimated from the comparison between real and simulated data.

    The simulations were created by fading the original image by 0.5 magnitudes but keeping the same background noise

Estimate of Magnitude errors and bias

    Average of SExtractor magnitude error

Results from using the Negative Image

Statistics of Spurious Objects

    Fraction of false positives as a  function of magnitude for different values of S/N

Spatial Distribution of Spurious Objects

    Spatial distribution of spurious objects estimated from false positives

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# ScienceGrade Attributes

Catalog Products >> Product Log >> Science Grade Catalog >> Attributes

Product Identification

Real User | Lisbeth Fogh Olsen
Product Creation Date | 2005-08-26
Product Creation Time | 12:24:03.380
User | eisdata
Session | 75283
Process | Local
Product Type | SINGLE PASSBAND
Extraction Method | SExtractor
Extraction Version | SExtractor 2.3.2
Survey | DPS
Telescope | ESO-NTT
Instrument | SOFI
Region | DEEP1a
Field | deep1a_53
Passband | J
ESO Filter# | #001
Total Exposure Time (seconds) | 4680

Filtering Settings

Magnitude Type for Catalog Filtering | MAG_AUTO
Signal to Noise Filtering Threshold | 3.0
Magnitude Upper Limit | 99.9
Magnitude Lower Limit | 0.0
Star/Galaxy Classification Method adopted | Simple Method
Magnitude Limit Applied for "Simple" Star/Galaxy Classification | 18
CLASS_STAR Limit Applied for "Simple" Star/Galaxy Classification | 0.9

Product Information

Total Area (square degrees) | 0.0089
Trimmed Area (square degrees) | 0.001
Masked Area (square degrees) | 0.0
Effective Area (square degrees) | 0.0079

Object Statistics

Number of Objects inside Trimmed Area | 105
Number of Objects inside Masked Area | 0
Number of Objects with SExtractor Flag > 0) | 326
Final Number of Galaxies | 705
Number Density of Galaxies (galaxy/square arcmin) | 24.667
Final Number of Stars | 7
Number Density of Stars (stars/square arcmin) | 0.245

Smooth Density Plot

    Smooth object density distribution,generated by applying a top-hat window of ... arcmin in diameter

Projected Distribution

    Projected Distribution of science grade catalog. In the figure are shown:

     1) galaxies (blue); stars (magenta); trimmed objects (red crosses); masked objects (black crosses); other discarded objects red squares).

    Also shown are the automatic masks placed by the system around bright stars, as defined in the configuration file (red losangles)

Limiting Magnitudes

Vega Magnitude System

5-sigma 2 arcsec (Vega) | 22.65
80% completeness (Vega) | 21.56
Extinction corrected 5-sigma 2 arcsec (Vega) | 22.64
Extinction corrected 80% completeness (Vega) | 23.09

AB Magnitude System

5-sigma 2 arcsec (AB) | 23.55
80% completeness (AB) | 22.46
Extinction corrected 5-sigma 2 arcsec (AB) | 23.54
Extinction corrected 80% completeness (AB) | 23.99

Science Grade Catalog Completeness

    80% completeness at m = 21.56
    50% completeness at m = 22.28
    red: completeness function
    blue: 50 and 80 percent completeness levels linearly interpolated between bins
    Magnitude System: Vega
    Magnitude Type: MAG\_AUTO

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# Verification

Catalog Products >> Product Log >> Primary Catalog >> Verifcation

Product Identification

Real User | Lisbeth Fogh Olsen
Product Creation Date | 2005-08-26
Product Creation Time | 12:24:03.380
User | eisdata
Session | 75283
Process | Local
Product Type | SINGLE PASSBAND
Extraction Method | SExtractor
Extraction Version | SExtractor 2.3.2
Survey | DPS
Telescope | ESO-NTT
Instrument | SOFI
Region | DEEP1a
Field | deep1a_53
Passband | J
ESO Filter# | #001
Total Exposure Time (seconds) | 4680

Number Counts

Star Counts with comparison with Galactic model

    STAR COUNTS COMPARED WITH GALACTIC MODEL

    Solid dots: EIS data

    Cyan line: Galactic model, not corrected for catalog completeness

    Blue line: Galactic model, corrected for catalog completeness

    Red dotted line: magnitude limit for the star/galaxy classification

    Magenta dotted line: 2 arcsec - 5 sigma limiting magnitude

    Number of stars in the catalog: 7

    Magnitudes are Vega in the instrument natural system (SOFI)

    Model data averaged over 2 simulations.

    Errors on model calculated as the standard deviation of the values in the different simulations.

    Errors on the real counts are: 1+sqrt(N + 0.75)

Galaxy Counts

    Solid Blue Squares: EIS data

    blue dashed line:

    5 S/N MAG_AUTO magnitude limit=21.73

    red line:

    Least Squares Method: fitted log(Counts)=a*Magnitude+b

    a =  0.30; b = -1.88.

    Magnitude System: Vega

    Magnitude Type:   MAG_AUTO

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