Sunspots Observation for 2017 April
Sunspots Observation 2017 APRIL
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Year: 2017
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 1740 2 2 31 51 1 10 20 1 21 31 31 52 33 100 st. cirrus
2 X
3 1600 3 5 49 99 3 25 55 2 24 44 44 106 54 5
4 * 100 rain
5 1610 4 2 27 47 1 9 19 1 18 28 19 75 29 0
6 1850 2 2 15 35 1 5 15 1 10 20 15 69 17 90
7 1610 3 1 6 16 0 0 0 1 6 16 0 7 7 80 cirrus
8 1600 3 0 0 0 0 0 0 0 0 0 0 0 0 40
9 1810 3 0 0 0 0 0 0 0 0 0 0 0 0 30
10 1640 3 1 2 12 1 2 12 0 0 0 0 7 3 100 cirrus
11 ! 100 raIN
12 1700 3 1 2 12 1 2 12 0 0 0 0 10 3 15
13 1710 4 1 6 16 1 6 16 0 0 0 16 10 7 0
14 1610 4 2 7 27 2 7 27 0 0 0 27 17 9 0
15 1610 4 0 0 0 0 0 0 0 0 0 0 0 0 0
16 X
17 ! 100
18 1640 3 1 4 14 1 4 14 0 0 0 0 19 5 40
19 1720 3 1 8 18 1 8 18 0 0 0 0 25 9 0
20 1710 4 2 10 30 2 10 30 0 0 0 0 35 11 0
21 1620 4 3 10 40 2 6 26 1 4 14 0 30 12 0
22 1620 3 2 12 32 1 7 17 1 5 15 17 35 14 100 st. cirrus
23 1620 4 3 17 47 2 12 32 1 5 15 32 21 19 25 cirrus
24 1610 3 3 25 55 2 20 40 1 5 15 40 57 28 20
25 1700 5 3 15 45 2 13 33 1 2 12 45 51 18 0
26 1700 3 3 13 43 2 8 28 1 5 15 15 42 16 10
27 1730 3 2 9 29 1 5 15 1 4 14 14 35 11 70
28 1620 3 3 9 39 2 7 27 1 2 12 12 42 12 40 cirrus
29 2010 3 2 5 25 1 3 13 1 2 12 12 20 7 80
30 1620 3 2 4 24 1 2 12 1 2 12 0 20 6 70
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Sunspots observation summary
Year: 2017
Month: April
OBSERVER: German Morales C.
Astronomia Sigma Octante
Monthly Mean R = 30.2
NR = 19.2 SR = 11.0 cR = 13.6
CV = 31.4 IS = 13.2
Q = 3.3 Cld = 43.4%
The Sun has been observed 25 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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