OF THE ROGER N. CLARK
OF THE ROGER N. CLARK
OF THE ROGER N. CLARK
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VISUAL ASTRONOMY <strong>OF</strong> <strong>THE</strong> DEEP SKY<br />
TELEDOM examples (cont. )<br />
Example 2: Sculptor System :<br />
***** T 1 d T 1 scope Optimum Detection Magnificaion *****<br />
Program e eo m: e e<br />
Bibliography<br />
Enter the telescope aperture in inches<br />
8.<br />
Enter the total magnitude of the object<br />
er the minimum and maximum sizes of the object in arc-minutes<br />
60 ,60<br />
Telescope aperture :<br />
8.0 inches<br />
Minimum usable magnification:<br />
Faintest star : 15.2<br />
27x<br />
Ob ject size : 60. 00 by 60.00 arc minutes<br />
surface brightness (magnitudes / sq . arc-sec .).<br />
.<br />
ODM :<br />
object with no telescope : 26.3<br />
reduction due to ODM : .4<br />
object in telescope at ODM : 24.5<br />
background in telescope at ODM : 24.6<br />
27x<br />
Log object cont ras t: -.8<br />
Log threshold contrast : -1 .2<br />
The object is detectable<br />
***** Program Teleodm : Telescope Optimum Detection Magnification *****<br />
Enter the telescope aperture in inches<br />
AstronomicaL ALmanac. US Government Printing<br />
Office, Washington, DC.<br />
Bartley, S. H. (195 1). The Psychophysiology of<br />
Vision. In Handbook of Experimental Psychology<br />
(S.S. Stevens, Ed.) Wiley, New York, 92 1-<br />
984.<br />
B1ackwell, H. R. (1946) . Contrast Thresholds of<br />
the Human EyeI Opt Soc Amer. 36 624-643.<br />
Bowen, K. P. (1984) . Vision and the Amateur<br />
Astronomer. Sky & Telscope April, 321 -324.<br />
Crossier, W. J. and A. H. Holway (1939). Theory<br />
and Measurement of Visual Mechanisms I.<br />
A Visual Discriminometer. II. Threshold<br />
Stimulus Intensity and Retinal Position. I<br />
Gen. Physiol., 22, 341-364.<br />
Curtis, H. D. (1901). On the Limits of Averted<br />
Vision. Lick Obs Bull 2 67-69.<br />
Di Cicco, D. (1979) . Filters to Pierce the Nightime<br />
Veil. Sky & Telescope. March, 231-236.<br />
Ferris, T. (1982). Galaxies. Stewart, Tabori and<br />
Chang, New York.<br />
Graham, C. H., N. R. Bartlett, J. L. Brown, Y.<br />
Hsia. C. G. Mueller and L. A. Riggs.<br />
(1965). Vision and Visual Perception. Wiley,<br />
New York.<br />
De Groot, S. G., J. M. Dodge and J. A. Smith.<br />
(1952). Factors in Night Vision Sensitivity:<br />
the Effect of Brightness. MRL Rep. 194, 11,<br />
1-17.<br />
Hecht, S., C. Haig and G. Wald (1935) . The Dark<br />
Adaptation of Retinal Fields of Different<br />
Size and Location. I Gen. Physiol., 19, 321-<br />
339.<br />
Hirshfield, A. and R. W. Sinnott (1985) . Sky Catalog<br />
2000.0, Vo lume 2, Double Stars, Va riable<br />
Stats and Nonstellar Objects. Sky Publishing<br />
Corp., Cambridge, Mass., and Cambridge<br />
University Press, Cambridge, England,<br />
385pp.<br />
Hoag, A. A., H. L. Johnson, B. Iriarte, R. J.<br />
Mitchell, K. L. Hallam and S. Sharpless<br />
(196 1). Photometry of Stars in Galactic<br />
Cluster Fields, Pub. US Naval Obs, Second<br />
Series, 17 349-542.<br />
Kingslake, R. (1965). Applied OP tics and Op tical Engineering,<br />
Volume 1. Light: Its Generation and<br />
Modification, Academic Press, New York and<br />
London.<br />
Mallas, J. H. and Kreimer, E. (1978) The Messier<br />
Album, Sky Publishing Corp., Cambridge,<br />
Mass., 216 pp.<br />
Middleton, W. E. K. (1958) . Vision Through The<br />
Atmosphere. Univ. of Toronto Press, Toronto.<br />
O'Dell, C. R. (1965) . Photoelectric Spectrophotometry<br />
of Gaseous Nebulae II. The Reflection<br />
Nebulae Around Merope. Astrophy. I<br />
142 604-608.<br />
Roach, F. E. and Jamnick, P. M. (1958). The Sky<br />
and the Eye. Sky & Telescope. February, 164-<br />
167.<br />
Schweizer, F. (1976) . Photometric Studies of Spiral<br />
Structure. I. The Disks and Arms of Six<br />
Sb and Sc Galaxies. Astrophy. I Suppl. 31,<br />
313-332.<br />
Sinnott, R. W. (1984) . Taming Our Chaotic<br />
Calendar. Sky & Telescope, May, 454-455.<br />
Stoltzmann, D. E. (1983). Resolution Criteria for<br />
Diffraction Limited Telescopes. Sky & Telescope,<br />
February, 176- 181.<br />
350<br />
35 1