SECRETARY'S REPORT 89 



entire celestial sphere, these instruments will provide a means of ex- 

 tending astronomical observations to the far ultraviolet and X-ray re- 

 gions of the spectrum. 



The immediate objective of the project is to map about 100,000 

 stars and record their brightnesses. Further analysis in special de- 

 tail of objects discovered by this survey is planned. 



The first rocket flight carrying a prototype Celescope of simplified 

 design should confirm our theoretical analyses and test some of the 

 more critical elements of the Celescope's electronic system. Experi- 

 ments have been delayed by rocket failure but should resume in 

 February 1962. 



The payload for the satellite will consist of imaging television-type 

 detectors sensitive to certain ultraviolet spectra. These video images 

 will be scanned and converted from analog to digital form prior to 

 signal transmission to ground stations to preserve all the important 

 stellar information. Models of this digital equipment have been de- 

 signed and built in Celescope laboratories and will serve as guides for 

 manufacturers building the satellite payload. The first telescope 

 should go into orbit in 1963-64. The Celescope program is supported 

 by NASA. 



PUBLICATIONS 



Publications of the Smithsonian Contributions to Astrophysics in- 

 cluded numbers 2 through 4 of volume 4 and nmnbers 4 through 8 

 of volume 5. 



The following papers by staff members of the Astrophysical Ob- 

 servatory appeared in various journals : 



Aller, L. H. See Goldberg, MuUer, and Aller. 



Baez, A. v. A proposed X-ray telescope for the 1 to 100-A region. Journ. 

 Geophys. Res. vol. 65, pp. 3019-3020, 1960. 



Brown, J. See Goldberg, Mohler, and Brown. 



Davis, R, J. U.S. plans for space telescopes for planets, stars, and nebulae. 

 Mem. Soc. Roy. Sci. Liege, ser. 5, vol. 4, p. 25, 1961. 



. See also Strom, Strom, and Davis. 



DeFelice, J. See Fireman and DeFelice; Fireman, DeFelice, and Tilles; 

 Tilles, DeFelice, and Fireman. 



Dyer, B. R., Jr. See Goldberg and Dyer. 



Fireman, E. L. See Tilles, DeFelice, and Fireman. 



Fireman, E. L., and DeFelice, J. Argon-37, argon-39, and tritium in meteor- 

 ites and the spatial constancy of cosmic rays. Journ. Geophys. Res., vol. 65, 

 pp. 3035-^041, 1960. 



Fireman, E. L. ; DeFelice, J. ; and Tilles, D. Tritium in recovered satellite 

 material (abstract). Bull. Amer. Phys. Soc, vol. 6, No. 3, p. 276, 1961. 



Fireman, E. L., and Kistner, G. A. The nature of dust collected at high alti- 

 tudes. Geochim. et Cosmochim. Acta, vol. 23, No. 5, 1961. 



Ginqerich, O. a computer program for non-grey stellar atmospheres. Mem. 

 Soc. Roy. Ligge, ser. 5, vol. 4, 1960. 



Goldberg, L. Project West Ford — properties and analyses; Introduction. 

 Astron. Journ., vol. 66, pp. 105-106, 1961. 



