THE BEEHIVE OBSERVATORY


 Home Page 

                Atmospheric                Atmospheric
Altitude        Extinction                 Refraction
(deg)             (mag)                (deg)         (d:m:s)
0                 3.35                 0.49443       0:29:40
5                 1.74                 0.17702       0:10:37
10                1.01                 0.09248       0:5:33
15                0.65                 0.06148       0:3:41
20                0.45                 0.04542       0:2:44
25                0.33                 0.03551       0:2:8
30                0.24                 0.02871       0:1:43
35                0.18                 0.02369       0:1:25
40                0.14                 0.01977       0:1:11
45                0.1                  0.01659       0:0:60
50                0.07                 0.01393       0:0:50
55                0.05                 0.01162       0:0:42
60                0.04                 0.00958       0:0:34
65                0.03                 0.00774       0:0:28
70                0.02                 0.00604       0:0:22
75                0.01                 0.00445       0:0:16
80                0                    0.00293       0:0:11
85                0                    0.00145       0:0:5
90                0                    0             0:0:0



Full Moons from 22/11/2021
18/12/2021    17/01/2022    15/02/2022    17/03/2022
15/04/2022    15/05/2022
14/06/2022    13/07/2022    12/08/2022    10/09/2022
10/10/2022    08/11/2022    08/12/2022    06/01/2023
05/02/2023    06/03/2023    05/04/2023    04/05/2023
03/06/2023    02/07/2023    01/08/2023    30/08/2023
29/09/2023    29/10/2023    27/11/2023    27/12/2023
25/01/2024    24/02/2024




Telescope Limits
Ojective (mm)     Dawes Limit (arcsec)    Rayleigh Limit (arcsec)    Limiting Mag (mag)

20                5.8                     6.9                         8.6
30                3.9                     4.6                         9.5
40                2.9                     3.5                         10.1
50                2.3                     2.8                         10.6
60                1.9                     2.3                         11
70                1.7                       2                         11.3
80                1.4                     1.7                         11.6
90                1.3                     1.5                         11.8
100               1.2                     1.4                         12.1
110               1.1                     1.3                         12.3
120               1                       1.2                         12.5
130               0.9                     1.1                         12.6
140               0.8                       1                         12.8
150               0.8                     0.9                         13
160               0.7                     0.9                         13.1
170               0.7                     0.8                         13.2
180               0.6                     0.8                         13.4
190               0.6                     0.7                         13.5
200               0.6                     0.7                         13.6
210               0.6                     0.7                         13.7
220               0.5                     0.6                         13.8
230               0.5                     0.6                         13.9
240               0.5                     0.6                         14
250               0.5                     0.6                         14.1
260               0.4                     0.5                         14.2
270               0.4                     0.5                         14.2
280               0.4                     0.5                         14.3
290               0.4                     0.5                         14.4
300               0.4                     0.5                         14.5


 Home Page