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NGC 1630


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An image database. II. Catalogue between δ=-30deg and δ=70deg.
A preliminary list of 68.040 galaxies was built from extraction of35.841 digitized images of the Palomar Sky Survey (Paper I). For eachgalaxy, the basic parameters are obtained: coordinates, diameter, axisratio, total magnitude, position angle. On this preliminary list, weapply severe selection rules to get a catalog of 28.000 galaxies, wellidentified and well documented. For each parameter, a comparison is madewith standard measurements. The accuracy of the raw photometricparameters is quite good despite of the simplicity of the method.Without any local correction, the standard error on the total magnitudeis about 0.5 magnitude up to a total magnitude of B_T_=17. Significantsecondary effects are detected concerning the magnitudes: distance toplate center effect and air-mass effect.

Southern Galaxy Catalogue.
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观测天体数据

星座:波江座
右阿森松:04h37m15.50s
赤纬:-18°54'05.0"
明显尺寸:0.741′ × 0.55′

目录:
适当名称   (Edit)
NGC 2000.0NGC 1630
HYPERLEDA-IPGC 15659

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