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Seeing Measurements at Freeling Heights and Siding Spring Observatory

Published online by Cambridge University Press:  25 April 2016

P. R. Wood ,
A. W. Rodgers  and
K. S. Russell
P. R. Wood
Affiliation:
Mount Stromlo and Siding Spring Observatories, Private Bag, Weston Creek PO, ACT 2611, Australia. wood@mso.anu.edu.au, alex@mso.anu.edu.au
A. W. Rodgers
Affiliation:
Mount Stromlo and Siding Spring Observatories, Private Bag, Weston Creek PO, ACT 2611, Australia. wood@mso.anu.edu.au, alex@mso.anu.edu.au
K. S. Russell
Affiliation:
Anglo-Australian Observatory, Private Bag, Coonabarabran, NSW 2357, Australia. ksr@aaocbn3.aao.gov.au
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Abstract

A low-cost differential image motion monitor (DIMM), consisting of an 11-inch Celestron, an SBIG ST-4 autoguiding CCD camera and a PC, is described. Two such systems were used during June–July and November–December 1993 to make near-simultaneous seeing measurements at Freeling Heights in the Northern Flinders Ranges and at Siding Spring Observatory. The results of these campaigns show that the seeing-distribution is generally similar at both sites, with the most common seeing value being ~l·2″. Siding Spring does, however, have slightly more bad seeing (>2″) than Freeling Heights. Weather records from Arkaroola Resort (15 km south of Freeling Heights) indicate that there is ~15% less cloud cover at Freeling Heights than at Siding Spring. Episodes of rapid seeing deterioration at Siding Spring in winter are shown to coincide with warm air masses crossing the mountain.

Keywords

site testingseeing — instrumentationmiscellaneous
Type
Instruments, Techniques and Basic Measurements
Information
Publications of the Astronomical Society of Australia , Volume 12 , Issue 1 , April 1995 , pp. 97 - 105
Copyright
Copyright © Astronomical Society of Australia 1995

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References

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