astronomy - introduction to astronomical photometry using by W. Romanishin

By W. Romanishin

An creation to Astronomical Photometry utilizing CCDs through W. Romanishin

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Consortium of U. , CTIO, Brazil. edu/soar) UKIRT (United Kingdom Infrared Telescope). 8 m on Mauna Kea. Optimized for infrared work. html) CFHT (Canadian- France- Hawaii Telescope). 6 m on Mauna Kea. Started operations 1979. 6m - Cerro La Silla, Chile. Since 1976. 5m - German- Spanish telescope, Calar Alto, Spain. de/CAHA) Since 1985. 5 m built by ESO in Chile. Since 1989. 5 meter. ). Built by consortium of 3 universities and National Optical Astronomy Observatory. Located on Kitt Peak. A modern telescope, engineered so that the enclosure only minimally degrades the seeing.

We can locate our telescope at a place where clouds are (at least relatively) infrequent, or, if we are stuck someplace, simply wait for clear weather. Nor does atmospheric pollution cause a major problem, as most research observatories are far from civilization. The obvious problems posed by the atmosphere- clouds and pollution- can be largely overcome by telescope location. But, even at the most pristine observing site- say at 4200 meters above sea level on Mauna Kea on Hawaii in the middle of the Pacific- there are several deleterious effects of the atmosphere.

In addition, the fiber carries a two way television signal on which the astronomers in Weimea talk to and see the telescope operator at the summit. I have observed on the Keck from Weimea. The speed of the data and television link is fast enough that we soon forget the telescope is many miles away, rather than just through a door as in the case of most telescopes operated from a nearby warm room. In fact, having the operator miles away can be a good thing, if their choice of music doesn’t match yours (if you are an operator, don’t be offended).

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