Neutral Filters for Photographic Photometry

1950 ◽  
Vol 62 ◽  
pp. 167
Author(s):  
Harold F. Weaver
Keyword(s):  
Photographic Photometry

scholarly journals Two-dimensional Photographic Photometry of the Zodiacal Light from Spatial Observations

1980 ◽  
Vol 90 ◽  
pp. 37-39
Author(s):  
P.L. Lamy ◽  
A. Llebaria ◽  
S. Koutchmy
Keyword(s):  
Wide Field ◽  
Two Dimensional ◽  
Zodiacal Light ◽  
Preliminary Results ◽  
Photographic Photometry

Preliminary results for the photometry of a photograph of the inner zodiacal light taken aboard Saliout 6 are reported. The Very Wide Field Camera to be flown aboard Spacelab 1 is described and the program of observations of the zodiacal light is presented.

Reducing the influence of the development upon the photographic photometry of continuous spectra and line spectra

1974 ◽  
Vol 21 (4) ◽  
pp. 1414-1415 ◽  
Author(s):  
A. S. Sambueva ◽  
S. A. Sverchinskaya ◽  
S. A. Shipitsyn
Keyword(s):  
Photographic Photometry

The Haemoglobin in the Condensed Chromatin of Mature Amphibian Erythrocytes: A Further Study

1970 ◽  
Vol 7 (1) ◽  
pp. 15-33
Author(s):  
J. V. SMALL ◽  
H. G. DAVIES
Keyword(s):  
Minor Component ◽  
Condensed Chromatin ◽  
Triturus Cristatus ◽  
A Minor ◽  
Photographic Photometry

The condensed chromatin in mature nucleated erythrocytes is surrounded by nuclear haemoglobin at a concentration about equal to that in the cytoplasm. New measurements employing improved fixation, glutaraldehyde instead of OsO4, and microspectrophotometric analyses instead of photographic photometry at one wavelength, show that previously reported values for the content of haemoglobin in the mass of the chromatin in Triturus cristatus, 45-50%, were far too high. In the condensed chromatin of 3 species of amphibia the concentrations of intrachromatin haemoglobin relative to the cytoplasm are 10% (Triturus cristatus), 10% (Necturus maculosa) and 8% (Amphiuma tridactylum). It is concluded that haemoglobin is only a minor component of chromatin, and this result is discussed in relation to the condensation of erythrocyte chromatin and observations on its ultrastructure.

scholarly journals Polarimetric and Photometric Investigations of Lacertids

1987 ◽  
Vol 121 ◽  
pp. 325-327
Author(s):  
V.A. Hagen-Thorn ◽  
V.A. Yacovleva
Keyword(s):  
Astronomical Observatory ◽  
Degree Of Polarization ◽  
State University ◽  
Bl Lac ◽  
High Degree ◽  
Direction Of Polarization ◽  
Photographic Photometry

At the Astronomical Observatory of Leningrad State University two observational programs of investigation of lacertids - photographic photometry and photoelectric polarimetry - are in progress for many years. Some results for OJ 287 and BL Lac are of interest: (1) existence of preferable direction of polarization, (2) correlations between the brightness and polarization parameters, and (3) high degree of polarization (~50%) of individual sources responsible for variability.

Two-color photographic photometry of variables in the globular cluster M28

1990 ◽  
Vol 100 ◽  
pp. 686 ◽  
Author(s):  
Amelia Wehlau ◽  
Steven Butterworth
Keyword(s):  
Globular Cluster ◽  
Photographic Photometry
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