Sunspot Observation
Nayoro Observatory
128mm Refractor  Canon EOS7D Herschel Prism+G540nm Filter
Observer  Fumitake Watanabe
Jul,2025
Date Time(UT)   North     South     Total   Seeing memo
Day h m g f R g f R g f R    
1 06 23 5 35 85 7 31 101 12 66 186 3  
2                          
3 07 24 5 15 65 4 23 63 9 38 128 3  
4                          
5 03 37 3 5 35 2 10 30 5 15 65 3  
6 03 19 4 14 54 3 19 49 7 33 103 3  
7                          
8 03 19 2 3 23 5 17 67 7 20 90 3 休日キュウジツ
9 03 28 3 10 40 4 7 47 7 17 87 3  
10 16 10 2 16 36 3 4 34 5 20 70 3  
11 03 34 3 25 55 1 1 11 4 26 66 2  
12 03 31 4 40 80 2 4 24 6 44 104 2  
13 03 23 4 43 83 3 14 44 7 57 127 3  
14 00 26 5 43 93 2 16 36 7 59 129 5 AM(休館日キュウカンビ)
15                          
16                          
17                          
18                          
19                          
20                          
21 07 28 6 33 93 4 14 54 10 47 147 2 休日キュウジツ
22                          
23 02 19 3 17 47 4 23 63 7 40 110 4 AM(休館日キュウカンビ)
24 00 23 4 23 63 5 27 77 9 50 140 5 AM
25 00 00 4 21 61 6 36 96 10 57 157 5 AM
26                          
27                          
28                          
29 03 40 1 2 12 6 27 87 7 29 99 3  
30 03 29 3 6 36 6 44 104 9 50 140 4  
31                          
  Total 61 351 961 67 317 987 128 668 1948   R=k(10g+f)
  Mean     56.5     58.1     114.6   k=1
  obs day 17