2019RAA....19...74V

Query : 2019RAA....19...74V

2019RAA....19...74V - Research in Astron. and astroph., 19, 74-74 (2019/May-0)

Measurements of atmospheric turbulence parameters at Vainu Bappu Observatory using short-exposure CCD images.

VALLAPUREDDY S., BANYAL R.K., RENGASWAMY S. and SELVARAJ A.

Abstract (from CDS):

We report atmospheric turbulence parameters, namely atmospheric seeing, tilt-anisoplanatic angle (θ0) and coherence time (τ0), measured under various sky conditions, at Vainu Bappu Observatory in Kavalur. Bursts of short exposure images of selected stars were recorded with a high-speed, frame-transfer CCD mounted on the Cassegrain focus of a newly commissioned 1.3 m telescope. The estimated median seeing is ≃ 1.85'' at wavelength of ∼ 600 nm, the image motion correlation between different pairs of stars is ∼ 44% for θ0 ≃ 36'' and mean τ0 is ≃ 2.4 ms. This work was motivated by the design considerations and expected performance of an adaptive optics system that is currently being planned for the telescope.

Abstract Copyright: ∼

Journal keyword(s): atmospheric effects - turbulence - instrumentation: adaptive optics - catalogs - methods: observational

Simbad objects: 40

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Number of rows : 40
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 * 74 Psc A ** 01 05 40.9441288477 +21 28 23.490840041 5.26 5.263 5.273     A0IV-Vnn 80 0
2 * 77 Psc A PM* 01 05 49.2273145104 +04 54 30.156785496           F5V 95 0
3 * gam01 Ari PM* 01 53 31.8192032943 +19 17 45.430793660   4.558 4.589 6.71   A0Vnp_lB 80 0
4 * 30 Ari A SB* 02 37 00.5234711568 +24 38 49.990480872   6.86 6.48     F5V 101 0
5 HD 21743 * 03 31 20.7532742568 +27 34 18.505694532   6.60 6.57     A1V 39 0
6 * 32 Eri A * 03 54 17.5018067928 -02 57 17.039726676   5.59 4.70     G6.5III 61 0
7 HD 26923 PM* 04 15 28.8004060272 +06 11 12.698572488 6.910 6.860   5.9   G0IV 214 0
8 HD 29173 * 04 35 14.1159669168 -09 44 10.929586092   6.48 6.37     A2IIIs 47 0
9 * 55 Eri B a2* 04 43 34.7462783558 -08 47 39.525927671   7.17 6.73     F2VpSrSi 43 0
10 HD 31764 Be* 04 58 59.4111819144 +14 32 35.698979868 5.87 6.097 6.058     B7IIIe 68 0
11 HD 32040 Pu* 05 00 33.9358613640 +03 36 56.805165648 6.220 6.550 6.630     B9V 66 0
12 HD 32273 * 05 02 00.0227074752 +01 36 31.914071280   6.411 6.511     B7V 46 0
13 HD 34798 Pu* 05 19 17.4371850792 -18 31 11.705799792 5.65 6.23 6.39     B5Vs 88 0
14 HD 42111 * 06 08 57.9037271424 +02 29 58.885200456 5.86 5.80 5.73     B9V 125 0
15 * bet Mon A Be* 06 28 49.0704018024 -07 01 59.013827328 3.87 4.50 4.60     B4Veshell 247 0
16 * k01 Pup * 07 38 49.3751428464 -26 48 06.324538176 3.76 4.33 4.50     B6V 62 0
17 * 2 Pup A EB* 07 45 29.1352793904 -14 41 25.925009208   6.045 5.997     A5/8 39 0
18 HD 63332 PM* 07 51 05.7111574560 +54 07 45.268427460   6.493 6.020     F6V 65 0
19 HD 67159 * 08 06 27.4130331720 -09 14 40.050616956   6.190 6.226     B9III 46 0
20 HD 73710 * 08 40 22.0864518288 +19 40 11.771283936 8.290 7.410 6.390 5.70 5.21 G9III-IIIb 181 0
21 HD 90125 PM* 10 24 13.1771876424 +02 22 04.863145944   7.298 6.310     K0/1III 46 0
22 HD 91270 * 10 30 39.2446636320 -61 21 23.315827032   8.016 6.401     M2III 24 0
23 * 35 Sex ** 10 43 20.92089 +04 44 51.5965   6.96 5.79     K2II-III+K1II-III 43 0
24 * 54 Leo A PM* 10 55 36.8013543552 +24 44 59.022329568   4.478 4.477 6.04   A1V 64 0
25 Z 126-111 G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 840 0
26 * 83 Leo A PM* 11 26 45.3217299671 +03 00 47.156637705 7.78 7.28 6.46 6.0   G9IV-V 238 0
27 * 83 Leo ** 11 26 45.8 +03 00 35 7.63 7.01 6.16     ~ 211 0
28 HD 106975 * 12 18 09.2125604472 -03 57 14.891408532   7.25 6.85     F3V 47 0
29 * 17 Com a2* 12 28 54.7022406648 +25 54 46.265813136   5.208 5.236     B9VCrEu 280 0
30 * 32 Com * 12 52 12.2569957560 +17 04 26.189078484 9.90 7.90 6.28     M4 48 0
31 HD 115365 SB* 13 16 32.2601594136 +19 47 07.072731852   6.704 6.423     F0V 56 0
32 * 57 Aql A * 19 54 37.6524632016 -08 13 38.241542244   5.63 5.71     B7Vn 72 0
33 * 15 Sge PM* 20 04 06.2207683221 +17 04 12.676556401   6.390 5.788 5.4   G0V 389 0
34 * tet Sge A PM* 20 09 56.6468417712 +20 54 54.097355736   6.886 6.516     F3V 53 0
35 * omi Cap A PM* 20 29 53.9094947640 -18 34 59.460677724   5.969 5.897     A1V 62 0
36 HD 195483 ** 20 31 13.0720249008 +11 15 38.239521264   7.14 7.11     B8V 54 0
37 * 3 Peg PM* 21 37 43.6459822968 +06 37 06.209240304   6.211 6.177   6.13 A2V 69 0
38 HD 214599 PM* 22 39 44.1846716256 -28 19 32.374717392   7.315 6.314     K0/1III 26 0
39 * i02 Aqr ** 23 46 00.9225438 -18 40 42.031269           A9IV+F2V 53 0
40 HD 223991A SB* 23 54 21.4064107302 -27 02 34.465411699   6.887 6.779     kA2hA2VmA4 57 0

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