MAPS - Minnesota Automated Plate Scanner Catalog of the POSS I

Sky Query Form - Advanced Query

This is the advanced form for selecting a regions of the sky from the MAPS Catalog. If your query is relatively simple, you can switch to the standard interface which is much simpler to use.

Click here to switch to the Standard Query

Advanced Query

If you enter an object name below, the SIMBAD name resolver will be used to attempt to determine the position of that object on the sky. Entering an object name overrides any positional information entered below. If you want to search around a specific position, leave the object name blank.
Object Name:
Enter your central coordinates in the boxes below. Both sexagesimal and WCS (e.g. - decimal degrees for longitude and latitude) format are accepted.
Right Ascension/Longitude: Coordinate System:
Declination/Latitude:
Field Width/Diameter: arcminutes with Square Bounds
Output as space-delimited text?
Return hyperlinks to other online astronomical catalog/surveys for this region.
Return Digitized Sky Survey image of same field from SkyView?
[WARNING: If there are connectivity issues with SkyView, this image may not load properly.]
The table below contains all the variables in the MAPS catalog. Select which variables you want to be output and which variables to sort by. You can elect to limit the range of values the variables can take for the objects returned. Please see the documentation for information about these parameters.
 
Show in Output Sort by Variable (Units) Lower Limit Upper Limit
Plate ID    
O: 
E: 
O: 
E: 
Starnum
(NOTE: if O plate starnum and plateid are selected, the IAU name of each object will also be output).
   
B1950.0 Coordinates    
J2000.0 Coordinates    
Galactic Coordinates    
O: 
E: 
O: 
E: 
Galnode Value
(NOTE: O plate 0.0<=galnod < 0.5 means image is classed as "stellar", 0.5<=galnod<=1.0 classed as "galaxy").
O:
E: 
O:
E: 
O: 
E: 
O: 
E: 
Integrated Magnitude mag O:
E: 
O:
E: 
O: 
E: 
O: 
E: 
Stellar Magnitude mag O:
E: 
O:
E: 
O-E Integrated Color mag
O-E Stellar Color mag
E(B-V) mag
O: 
E: 
O: 
E: 
Mean Surface Brightness mag/arcsec^2 O:
E: 
O:
E: 
O: 
E: 
O: 
E: 
Major Axis Diameter arcsec O:
E: 
O:
E: 
O: 
E: 
O: 
E: 
Image Ellipticity O:
E: 
O:
E: 
O: 
E: 
O: 
E: 
Image Position Angle (B1950.0) degrees O:
E: 
O:
E: 
O: 
E: 
O: 
E: 
Image Position Angle (J2000.0) degrees O:
E: 
O:
E: 
O: 
E: 
O: 
E: 
Image Position Angle (Galactic) degrees O:
E: 
O:
E: 
O: 
E: 
O: 
E: 
Half-Light Radius arcsec O:
E: 
O:
E: 
O: 
E: 
O: 
E: 
Image 1st Moment O:
E: 
O:
E: 
O: 
E: 
O: 
E: 
Image 2nd Moment O:
E: 
O:
E: 
O: 
E: 
O: 
E: 
Image Percentage Saturation O:
E: 
O:
E: 
O: 
E: 
O: 
E: 
C42 (r100/r50) Concentration Index O:
E: 
O:
E: 
O: 
E: 
O: 
E: 
C32 (r75/r50) Concentration Index O:
E: 
O:
E: 
O: 
E: 
O: 
E: 
Image Average Transmittance O:
E: 
O:
E: 
O: 
E: 
O: 
E: 
Image Sky Transmittance O:
E: 
O:
E: 
O: 
E: 
O: 
E: 
Position Relative to Plate Corner ERE    
O: 
E: 
O: 
E: 
Image Flag O:
E: 
O:
E: 
Duplicate Image Flag (Number of matches of this objects Estarnum to O plate images)