Alisher S. Hojaev, PASA, 15 (1), 152
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Observations
The observations were carried out on the 1m (40-inch) Schmidt telescope of the Byurakan Astrophysical Observatory with a 4 deg. objective prism. We used a Schott RG1 filter with Kodak 103a-E, IIa-E and 103-F type plates. The observational details are presented in Table 1. Plate 1 was obtained by E.Parsamian.
Number of | Type of | Exposing | Date of the | Alphabetical symbol |
the plates | the plates | times | observations | of the area embraced |
1 | Kodak IIa-E | 90 min | 25.10.1970 | B |
2 | Kodak 103a-E | 43 | 29.12.1983 | A |
3 | Kodak 103a-E | 60 | 30.12.1983 | A |
4 | Kodak 103a-E | 2x10 | 31.12.1983 | A |
5 | Kodak 103a-E | 60 | 31.12.1983 | C |
6 | Kodak 103a-E | 75 | 31.12.1983 | C |
7 | Kodak 103a-E | 90 | 31.12.1983 | A |
8 | Kodak 103a-E | 2x7 | 01.01.1984 | C |
9 | Kodak 103a-E | 3x10 | 01.01.1984 | B |
10 | Kodak 103a-E | 5;8 | 01.01.1984 | A |
11 | Kodak 103a-E | 60 | 01.01.1984 | A |
12 | Kodak 103a-F | 60 | 02.01.1984 | B |
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The total survey region patrol time was about 10 hours. Since the observations covered a few superposed fields along the extent of the dark clouds (see Fig.1), the overall survey area was approximately 50 sq.deg. with the common centre at R.A.(1950.0)=0430 and Decl.(1950.0)=+24deg. (the region of the Taurus1- Taurus3 T-associations). Different exposure times were selected to clearly reveal H emission in stars of different brightness. The survey's limiting magnitude was . The evaluation of the relative H emission intensity was made using the conventional five-grade scale proposed by Haro(1953).
Next Section: New H emission line Title/Abstract Page: Some Results of an Previous Section: Introduction | Contents Page: Volume 15, Number 1 |
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