Results 21 to 30 of about 27,281 (265)

Fast CCD Photometry in the Taiwan-America Occultation Survey

Open Astronomy, 2003
We describe the efforts of the Taiwan-America Occultation Survey (TAOS) project to develop a data acquisition and analysis scheme for fast CCD imaging photometry.
Chen W. P., Zhang Z. W., King S. K., Alcock C., Byun Y. I., Cook K. H., Dave R., Giammarco J., Lee T., Lehner M., Liang C., Lissauer J., Marshall S., Pater I. de, Porrata R., Rice J., Wang A., Wang S. Y., Wen C. Y.   +18 more
doaj   +1 more source

The Reduction of CCD Images for Stellar Photometry on the Vatt

Open Astronomy, 2003
We briefly describe a method of organizing all the star field exposures taken in a complete CCD observational run. By a “CommandLog” (to be published in J. Astron.
Janusz R., Boyle R. P., Philip A. G. Davis   +2 more
doaj   +1 more source

Parameterization of long-period eclipsing binaries

Open Astronomy, 2022
One of the important sources for independent determination of stellar masses is eclipsing binaries with components on the main sequence, and with observable spectral lines of both components.
Pakhomova Polina, Berdnikov Leonid, Kniazev Alexei, Katkov Ivan, Malkov Oleg   +4 more
doaj   +1 more source

Overlapping Open Clusters NGC 1750 and NGC 1758 behind the Taurus Dark Clouds. II. CCD Photometry in the Vilnius System

Open Astronomy, 2003
Seven-color photometry in the Vilnius system has been obtained for 420 stars down to V = 16 mag in the area containing the overlapping open clusters NGC 1750 and NGC 1758 in Taurus.
Straižys V., Kazlauskas A., Černiauskas A., Boyle R. P., Vrba F. J., Philip A. G. Davis, Laugalys V., Černis K., Smriglio F.   +8 more
doaj   +1 more source

A New Approach to the Long-Term Activity Behavior of DM UMa

Open Astronomy, 2012
A long-term activity character of DM UMa (K0-1 IV-III), which is one of the most active members of the RS CVn type variables, is examined using the multicolor photometric observations which spread to the time interval between 1980 and 2009. In this work,
Taş G., Evren S.
doaj   +1 more source

Merging Data from Large and Small Telescopes – Good or Bad? And: How Useful is the Application of Statistical Weights to Time-Series Photometric Measurements?

Open Astronomy, 2003
I have investigated the value of the contribution of small telescopes to the success of a whole WET run. To this end, I have applied different data weighting schemes to two extreme WET test data sets. I find that weights proportional to the inverse local
Handler G.
doaj   +1 more source

Amperometric and Photometric Responses of in Situ Coupled Glucose Oxidase-Poly (Propylene Imine) Dendrimer Based Glucose Biosensor

International Journal of Electrochemical Science, 2013
In this work, poly (propylene imine) dendrimer (PPI) was coupled to glucose oxidase enzyme (GOx) in situ and used as a bioreceptor in a glucose biosensor.
Sudheesh K. Shukla, Ajay K. Mishra, Bhekie B. Mamba, Omotayo A. Arotiba   +3 more
doaj   +1 more source

A Comprehensive Comparison of Period Extraction Algorithms for Asteroids with Long Term Observation

Universe, 2021
The light curve period of an asteroid plays an important role in determining the rotation period, the collision evolution and the YORP effect. There are many period extraction algorithms used to find the light curve period of asteroids with long term ...
Yang Liu, Liming Wu, Tianqi Sun, Pengfei Zhang, Xi Fang, Liyun Cheng, Bin Jiang   +6 more
doaj   +1 more source

High-Precision UBVRI Photometry with a New 50 Cm Telescope at Stará Lesná

Open Astronomy, 2003
The paper presents the experience, observations and results obtained with the new 50 cm photometric telescope at the Stará Lesná Observatory equipped with an SBIG ST10MXE CCD camera.
Pribulla T., Chochol D.
doaj   +1 more source

PHOTOMETRIC DETERMINATION OF IRON. [PDF]

Journal of the American Chemical Society, 1902
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Hinds, J. I. D., Cullum, Myrtis Louise
openaire   +2 more sources