Computer Science
Scientific paper
Feb 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001phot.work...47d&link_type=abstract
Third Workshop on Photometry, p. 47
Computer Science
Photometry, Ccd Cameras, Detection, Extrasolar Planets, Aerial Photography, Charge Coupled Devices, Cryogenic Equipment, Lenses, Manual Control, Position (Location)
Scientific paper
Application of the transit photometry method for detecting extrasolar giant inner planets requires acquisition of a large amount of photometric data on each of several thousand stars over a period of many weeks. The observational workload is very high if these data are obtained manually, so we have made a semiautomated system to carry out the observations at Lowell's Mars Hill location. This is a compromise between the observational effort of a manual system and the complexity of a robotic system. The equipment currently in use consists of a Loral 2Kx2K charged coupled device (CCD) mounted at the focal plane of an Aero-Ektarf/2.5 aerial camera lens with 30.5-centimeter (cm) focal length. The CCD camera system is the modified SNAPSHOT camera system. It is set up to take a large number of exposures unattended during the night. The camera and dewar are mounted on a Celestron Computstar 14 telescope mount and autoguided with an SBIG ST4 autoguider attached to a Celestron C90 guide telescope. The current system needs to be set up manually each night and stowed each morning. In addition, if the weather deteriorates during the night, the equipment must be manually stowed for protection. A proposed upgrade to the current hardware will allow these functions to be handled remotely. This in turn will allow the system to operate efficiently at Lowell's darker but more remote Anderson Mesa site.
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