3. OUR BACKWARD STELLAR MAGNITUDE SYSTEM

Many Skies ◽  
2020 ◽  
pp. 35-38
Keyword(s):  
Stellar Magnitude

Eye-Estimates of Stellar Magnitude.

1896 ◽  
Vol 4 ◽  
pp. 305
Author(s):  
E. C. Pickering
Keyword(s):  
Stellar Magnitude

scholarly journals New observations of flare stars in the pleiades by the method of stellar tracks

1990 ◽  
Vol 137 ◽  
pp. 63-66
Author(s):  
H.S. Chavushian ◽  
G.H. Broutian
Keyword(s):  
Time Resolution ◽  
Stellar Magnitude ◽  
Schmidt Telescope ◽  
Flare Stars ◽  
First Time

In 1984-1986 new observations of flare stars in the Pleiades region were carried out by the method of stellar tracks with 40″ Schmidt telescope of the Byurakan observatory. The effective observational time is 100 hours in U-rays (ORWO ZU-21 plates combined with UG-1 filter were used). The stellar tracks have 1-1.5 cm length, the limiting stellar magnitude on the plates is 13m-14m, time resolution is 5S-20s. 17 flares of 13 stars were detected. Six of these stars were detected as flare stars for the first time. According to the Hertzsprung catalogue all these stars are the Pleiades cluster members. The flare amplitudes reach up to 1.5-3.0 magnitudes, the duration vary from 2.5 to 10.5 seconds.

Integrated circuit stellar magnitude simulator

1978 ◽  
Vol 46 (8) ◽  
pp. 813-814
Author(s):  
James A. Blackburn
Keyword(s):  
Integrated Circuit ◽  
Stellar Magnitude

scholarly journals The Introduction of Tech Pan Film at the UK Schmidt Telescope

1999 ◽  
Vol 16 (3) ◽  
pp. 288-298 ◽  
Author(s):  
Quentin A. Parker ◽  
David Malin
Keyword(s):  
Stellar Magnitude ◽  
Wide Angle ◽  
Schmidt Telescope ◽  
Empirical Results ◽  
Fine Grained ◽  
The Uk

AbstractKodak Technical Pan (Tech Pan) emulsion on a film base has been in use at the UK Schmidt Telescope (UKST) since 1992. This material is extremely fine grained and its resolution is well matched to images produced by the UKST under good conditions. Tech Pan yields wide-angle photographs that are about 1 (stellar) magnitude fainter than equivalent IIIa-F plates but have considerably lower grain noise. A wide variety of new projects are under way which take advantage of this remarkable material. In this paper empirical results from experiments with Tech Pan from a number of sources are tied in with UKST experience to present an overview of the properties of the emulsion from an astronomical perspective. We compare Tech Pan's properties with those of equivalent IIIa-F emulsion, to which it seems superior in almost every respect. This overview and groundwork are currently missing from the published astronomical literature. The technical background and developments leading to adoption of this material at the UKST are presented.

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