Sunspots Observation for 2021 April
2 Observers================================================================
Sunspots Observation 2021 APRIL
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Year: 2021
Month: April
OBSERVER: German Morales C.
Astronomia Sigma Octante
Instr.: SCT
Fl: 2000mm Aperture: 200mm Aperture stop used: 90mm
Method: Projection Image diameter: 140mm
Day UT Q g s R Ng Ns NR Sg Ss SR cR CV IS M Cld Remarks
1 1410 3 0 0 0 0 0 0 0 0 0 0 0 0 60 Rain
2 1600 3 0 0 0 0 0 0 0 0 0 0 0 0 100
3 1710 3 1 4 14 1 4 14 0 0 0 0 10 5 40
4 * 100 rAIn
5 * 100 rain
6 1740 3 0 0 0 0 0 0 0 0 0 0 0 0 50
7 1420 4 0 0 0 0 0 0 0 0 0 0 0 0 0
8 1420 3 0 0 0 0 0 0 0 0 0 0 0 0 30 cirrus
9 1800 3 0 0 0 0 0 0 0 0 0 0 0 0 50
10 * 100
11 1700 3 1 4 14 0 0 0 1 4 14 14 10 5 15
12 1610 3 1 10 20 0 0 0 1 10 20 20 22 11 10
13 1710 3 1 14 24 0 0 0 1 14 24 24 19 15 5
14 1420 3 1 14 24 0 0 0 1 14 24 24 22 15 0
15 1420 3 1 16 26 0 0 0 1 16 26 26 22 17 0
16 1640 3 0 0 0 0 0 0 0 0 0 0 0 0 10
17 1640 3 1 5 15 0 0 0 1 5 15 0 19 6 25
18 1250 4 1 10 20 0 0 0 1 10 20 0 19 11 0
19 1410 3 2 29 49 1 13 23 1 16 26 26 53 31 10
20 1700 3 3 28 58 1 13 23 2 15 35 22 66 31 0
21 1750 4 3 21 51 1 6 16 2 15 35 19 61 24 5
22 1710 3 2 16 36 0 0 0 2 16 36 24 36 18 0
23 1340 4 2 11 31 0 0 0 2 11 31 19 36 13 0
24 1640 3 2 23 43 0 0 0 2 23 43 43 38 25 20
25 1720 3 3 20 50 0 0 0 3 20 50 50 51 22 5
26 1830 4 3 33 63 0 0 0 3 33 63 63 66 36 0
27 1910 3 3 25 55 0 0 0 3 25 55 34 66 28 10 cirrus
28 1740 3 3 15 45 0 0 0 3 15 45 0 63 18 5
29 1720 3 2 7 27 0 0 0 2 7 27 0 35 9 40
30 1720 4 2 4 24 0 0 0 2 4 24 0 20 5 0
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Sunspots observation summary
Year: 2021
Month: April
OBSERVER: German Morales C.
Astronomia Sigma Octante
Monthly Mean R = 25.5
NR = 2.8 SR = 22.7 cR = 15.1
CV = 27.2 IS = 12.8
Q = 3.2 Cld = 26.3%
The Sun has been observed 27 days on 30 possible.
3 cloudy days impede observe the Sun
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Column Headings
UT: UTC at middle of observation
Q: Quality seeing
1 Bad, 2 Poor, 3 Fair, 4 Good, 5 Excelent
R: Wolf relative number for whole disc
g: Total Groups, s: Total Spots
NR: Wolf Relative number North hemisphere
Ng: North Groups, Ns: North Spots
SR: Wolf Relative number South hemisphere
Sg: South Groups, Ss: South Spots
cR: Wolf Relative number Central
CV: Classification Value after Malde for whole disc
IS: Inter Sol index for whole disc
M: ! Cloudy all day
* Cloudy at observation hours
X Impossible to make any kind of observation
Cld: Percentage of cloudy sky
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Report generated and Sent by: SOdb-ASO-gmc software (c)1999-v:2013
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Year: 2021
Month: April
OBSERVER: Igor Grágeda M.
Astronomia Sigma Octante
Instr.: RFR
Fl: 600mm Aperture: 90mm
Method: Projection Image diameter: 140mm
Day UT Q g s R Ng Ns NR Sg Ss SR cR CV IS M Cld Remarks
1 1425 3 0 0 0 0 0 0 0 0 0 0 0 0 70
2 1430 3 0 0 0 0 0 0 0 0 0 0 0 0 80 haze, st.cirrus
3 X on Trip
4 X on Trip
5 1400 3 0 0 0 0 0 0 0 0 0 0 0 0 90
6 1435 2 0 0 0 0 0 0 0 0 0 0 0 0 90
7 1315 3 0 0 0 0 0 0 0 0 0 0 0 0 30
8 1705 3 0 0 0 0 0 0 0 0 0 0 0 0 50 st.cirrus
9 1810 3 0 0 0 0 0 0 0 0 0 0 0 0 90 st.cirrus
10 1540 3 0 0 0 0 0 0 0 0 0 0 0 0 80 st.cirrus
11 1245 3 0 0 0 0 0 0 0 0 0 0 0 0 70
12 1350 3 1 2 12 0 0 0 1 2 12 12 10 3 90 st.cirrus
13 1110 3 1 4 14 0 0 0 1 4 14 14 11 5 30
14 1310 4 1 7 17 0 0 0 1 7 17 17 12 8 20
15 1400 3 1 5 15 0 0 0 1 5 15 15 6 6 5
16 1425 3 0 0 0 0 0 0 0 0 0 0 0 0 10 haze
17 1230 3 0 0 0 0 0 0 0 0 0 0 0 0 20
18 1220 3 1 6 16 0 0 0 1 6 16 0 8 7 5
19 1500 3 2 9 29 1 4 14 1 5 15 0 10 13 20
20 1810 4 3 26 56 1 8 18 2 18 38 19 48 20 10
21 1415 3 3 12 42 1 5 15 2 7 27 16 48 14 0
22 1420 4 2 8 28 0 0 0 2 8 28 17 19 9 0
23 1755 3 2 6 26 0 0 0 2 6 26 26 15 7 40
24 * 90
25 1535 4 2 11 31 0 0 0 2 11 31 31 30 12 50 cirrus
26 1500 4 3 15 45 0 0 0 3 15 45 45 40 17 0
27 1745 4 3 14 44 0 0 0 3 14 44 28 58 16 0
28 1625 3 3 10 40 0 0 0 3 10 40 0 40 12 90 st.cirrus
29 1845 3 3 6 36 0 0 0 3 6 36 0 25 7 70
30 1640 3 2 5 25 0 0 0 2 5 25 0 15 6 60
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Sunspots observation summary
Year: 2021
Month: April
OBSERVER: Igor Grágeda M.
Astronomia Sigma Octante
Monthly Mean R = 15.87
NR = 1.57 SR = 14.13 cR = 8.00
CV = 13.17 IS = 5.40
Q = 3.19 Cld = 45.00%
The Sun has been observed 27 days on 30 possible.
1 cloudy day & 2 days on trip impede observe the Sun
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Column Headings
UT: UTC at middle of observation
Q: Quality seeing
1 Bad, 2 Poor, 3 Fair, 4 Good, 5 Excelent
R: Wolf relative number for whole disc
g: Total Groups, s: Total Spots
NR: Wolf Relative number North hemisphere
Ng: North Groups, Ns: North Spots
SR: Wolf Relative number South hemisphere
Sg: South Groups, Ss: South Spots
cR: Wolf Relative number Central
CV: Classification Value after Malde for whole disc
IS: Inter Sol index for whole disc
M: ! Cloudy all day
* Cloudy at observation hours
X Impossible to make any kind of observation
Cld: Percentage of cloudy sky
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