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Photographic stellar photometry with the PDS microdensitometer …
- https://ntrs.nasa.gov/search.jsp?R=19790060486#:~:text=Photographic%20stellar%20photometry%20with%20the%20PDS%20microdensitometer%20A,value%20of%20the%20background%20density%20for%20each%20image.
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Photographic stellar photometry with the PDS …
- https://ntrs.nasa.gov/search.jsp?R=19790060486
- A technique for photographic stellar photometry with the PDS microdensitometer is described. It employs a least-squares fit to a model density profile to derive an instrumental magnitude index, an image-abnormality index, and the local value of the background density for each image. The instrumental magnitude index is calibrated in terms of true magnitude by the same methods as …
Photographic stellar photometry with the PDS …
- https://ui.adsabs.harvard.edu/abs/1979AJ.....84.1056S/abstract
- A technique for photographic stellar photometry with the PDS microdensitometer is described. It employs a least-squares fit to a model density profile to derive an instrumental magnitude index, an image-abnormality index, and the local value of the background density for each image. The instrumental magnitude index is calibrated in terms of true magnitude by the …
Photographic stellar photometry with the PDS …
- https://www.semanticscholar.org/paper/Photographic-stellar-photometry-with-the-PDS-Stetson/c4a7c72578abb9283b20beea20a96822b2031e69
- A technique for photographic stellar photometry with the PDS microdensitometer is described. It employs a least-squares fit to a model density profile to derive an instrumental magnitude index, an image-abnormality index, and the local value of the background density for each image. The instrumental magnitude index is calibrated in terms of true magnitude by the same methods as …
(PDF) Photographic stellar photometry using PDS data
- https://www.researchgate.net/publication/234358883_Photographic_stellar_photometry_using_PDS_data
- In the present paper, some preliminary results from a long-term stellar photometry program are examined. PDS density measurements are handled with a two-dimensional fitting procedure.
Photographic Stellar Astrometry and Photometry with a …
- https://ui.adsabs.harvard.edu/abs/1979ipia.coll..240C/abstract
- adshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A
Photographic stellar photometry using PDS data
- https://ui.adsabs.harvard.edu/abs/1979MmSAI..50..451B/abstract
- In the present paper, some preliminary results from a long-term stellar photometry program are examined. PDS density measurements are handled with a two-dimensional fitting procedure. The external accuracy obtained is 0.05 m on a range of eight magnitudes.
PDS Microdensitometer - Institute of Astronomy
- https://research.ast.cam.ac.uk/casu/pds/pdswww.html
- The PDS 1010A microdensitometer; Commercial Work. Using the PDS ; The PDS Hardware . The Photometry. The XY Table. The Electronics. Data Aquisition. Bibliography ; Contacts . Fig 1. The PDS 1010A microdensitometer. The PDS (Fig. 1) is a computer controlled measuring machine primarily used for retrieving data from astronomical photographic plates.
1979AJ.....84.1056S Page 1056 - Harvard University
- https://adsabs.harvard.edu/full/1979AJ.....84.1056S
- SAO/NASA Astrophysics Data System (ADS) Title: Photographic stellar photometry with the PDS microdensitometer Authors: Stetson, P. B. Journal: Astronomical Journal ...
Stellar photometry with an electrographic camera
- https://ui.adsabs.harvard.edu/abs/1980SPIE..264..164H/abstract
- Although the techniques described were developed using electrographic camera plates measured on a PDS microdensitometer, the principles are applicable to photometry with any type of panoramic detector. ... Photometry of stellar images from plates taken with a Kron electrographic camera was performed and measured with a PDS 1010 ...
Astrometric techniques with a PDS microdensitometer.
- https://ui.adsabs.harvard.edu/abs/1977AJ.....82..842C/abstract
- The PDS microdensitometer is used for automatic two-dimensional scanning of seeing-degraded photographic images of astronomical objects. Various digital algorithms are used for image centering, including a general two-dimensional Gaussian fitting. The reliability of different algorithms is tested for both bright and faint stars on three common types of emulsion (103a, …
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