Sunspot Observation
Nayoro Observatory
128mm Refractor  Canon EOS7D Herschel Prism+G540nm Filter
Observer  Fumitake Watanabe
May,2025
Date Time(UT)   North     South     Total   Seeing memo
Day h m g f R g f R g f R    
1                          
2 03 32 2 23 43 0 0 0 2 23 43 4  
3 06 26 2 20 40 0 0 0 2 20 40 1  
4 06 12 3 45 75 2 5 25 5 50 100 3  
5 06 41 4 43 83 1 8 18 5 51 101 1  
6 00 57 3 46 76 1 10 20 4 56 96 3 AM
7 02 03 2 47 67 1 12 22 3 59 89 3 AM(休館日キュウカンビ)
8 00 21 2 48 68 2 12 32 4 60 100 4 AM(休館日キュウカンビ)
9 06 50 2 17 37 2 6 26 4 23 63 2  
10                          
11 03 11 3 20 50 2 7 27 5 27 77 2  
12 00 46 2 14 34 2 6 26 4 20 60 3 AM(休館日キュウカンビ)
13                          
14                          
15 03 24 2 23 43 1 1 11 3 24 54 5  
16 03 23 4 12 52 1 2 12 5 14 64 3  
17 03 31 4 19 59 1 3 13 5 22 72 2  
18                          
19 00 52 2 10 30 3 5 35 5 15 65 3 AM(休館日キュウカンビ)
20 08 40 2 12 32 3 3 33 5 15 65 1  
21 03 45 3 8 38 4 11 51 7 19 89 3  
22 00 01 3 7 37 5 17 67 8 24 104 3 AM(休日キュウジツ)
23 07 07 3 10 40 6 21 81 9 31 121 2  
24 03 22 3 3 33 5 15 65 8 18 98 1  
25                          
26                          
27 04 09 4 10 50 5 15 65 9 25 115 2 休館日キュウカンビ
28 03 23 4 22 62 4 19 59 8 41 121 4  
29 03 27 5 28 78 4 30 70 9 58 148 5  
30 03 26 5 48 98 2 23 43 7 71 141 5  
31 03 30 5 37 87 2 11 31 7 48 118 1  
  Total 74 572 1312 59 242 832 133 814 2144   R=k(10g+f)
  Mean     54.7     34.7     89.3   k=1
  obs day 24