Photographic photometry with IRIS diaphragm photometers

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.

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

Journal of Applied Spectroscopy ◽

10.1007/bf00612377 ◽

1974 ◽

Vol 21 (4) ◽

pp. 1414-1415 ◽

Cited By ~ 1

Author(s):

A. S. Sambueva ◽

S. A. Sverchinskaya ◽

S. A. Shipitsyn

Keyword(s):

Photographic Photometry

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

Journal of Cell Science ◽

10.1242/jcs.7.1.15 ◽

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.

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substage iris diaphragm

Dictionary of Gems and Gemology ◽

10.1007/978-3-540-72816-0_20968 ◽

2009 ◽

pp. 824-824

Keyword(s):

Iris Diaphragm

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Polarimetric and Photometric Investigations of Lacertids

Symposium - International Astronomical Union ◽

10.1017/s0074180900155317 ◽

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.

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