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Photometry of Galaxies in the Field of the Galaxy Cluster aBELL 1781 |
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| Authors: | K Fritze M Lange G M Richter D Stoll |
| Abstract: | A method for determing the brightness and diameter of galaxies in a large field on Schmidt plates by automatic scanning with a microphotometer is described and applied to the ABELL cluster A 1781. The accuracy of this method is tested. The overall errors (r.m.s.) of brightness and diameter are 0.16 mag and 0″.44. The cluster A 1781 has been prooved to be a very poor cluster of about 10 members up to mB ≈ 19m.5. |
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