Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Thursday, 3 August 2023

‹ 02.08.2023 2023 04.08.2023 ›

Photosphere sunspot drawing and RDS evaluation

03.08.2023 photosphere drawing

High-resolution scan (3228 px)

Time
07:45 UT
Observer
Burçin TANIK
g
12
f
65
R
185
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · DHI – 15Group 1 · DHI – 15 Group 2 · CSI – 5Group 2 · CSI – 5 Group 3 · AX_ – 1Group 3 · AX_ – 1 Group 4 · AX_ – 1Group 4 · AX_ – 1 Group 5 · DKO – 21Group 5 · DKO – 21 Group 6 · HS_ – 1Group 6 · HS_ – 1 Group 7 · ?__ – 1Group 7 · ?__ – 1 Group 8 · EKC – 15Group 8 · EKC – 15 Group 9 · AX_ – 2Group 9 · AX_ – 2 Group 10 · AX_ – 1Group 10 · AX_ – 1 Group 11 · AX_ – 1Group 11 · AX_ – 1 Group 12 · HH_ – 1Group 12 · HH_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=3.08.2023
Saat=07:45
Gözlemci=Burçin TANIK
KontrolEden=Olcay PLEVNE
Durumaçısı=11.59
Enlemaçısı=5.91
Boylamaçısı=55.36
Boylamfark=2
GKalite=3
GDurum=G.T
Kuzeyaçısı=-0.5
Sırano=19782
AyRasatNo=3
RasatÖnceki=02.08.2023
RasatSonraki=04.08.2023

[Leke Grupları]
Grupsayısı=12:7:5
LekeSayısı=65:45:20
RölatifSayı=185:115:70
01=DHI 15 +12.308 +35.110 090.470 28.274 0000 0 +15.409 +39.521 +09.207 +30.698 +10.897 +37.581 +14.356 +31.128
02=CSI 05 +22.735 +11.490 066.850 +0.000 0000 0 +24.765 +13.740 +20.705 +09.906 +22.735 +12.874 +22.735 +10.106
03=AX_ 01 +17.285 +05.309 060.669 -1.000 0000 0 +17.285 +05.309 +17.285 +05.309
04=AX_ 01 +17.781 +00.934 056.294 -1.000 0000 0 +17.781 +00.934 +17.781 +00.934
05=DKO 21 +10.215 -18.224 037.136 +0.000 0000 0 +11.639 -14.200 +08.791 -22.247 +10.215 -14.400 +10.215 -22.470
06=HS_ 01 +23.199 -22.634 032.726 +0.000 0000 0 +24.214 -21.415 +22.183 -23.852 +23.199 -21.916 +23.199 -23.353
07=?__ 01 +15.338 -86.399 328.961 -1.000 0000 0 +15.338 -86.399 +15.338 -86.399
08=EKC 15 -10.307 +68.198 123.558 +0.000 0000 0 -08.354 +74.243 -12.261 +62.153 -10.307 +74.430 -10.307 +62.353
09=AX_ 02 -22.855 +20.820 076.180 +0.000 0000 0 -22.606 +21.315 -23.104 +20.325 -22.855 +20.815 -22.855 +20.825
10=AX_ 01 -16.267 +20.560 075.416 -1.000 0000 0 -16.267 +20.560 -16.267 +20.560
11=AX_ 01 -09.301 +08.823 064.183 -1.000 0000 0 -09.301 +08.823 -09.301 +08.823
12=HH_ 01 -21.374 -71.461 343.899 +0.000 0000 0 -20.282 -69.446 -22.466 -73.476 -21.374 -69.946 -21.374 -72.976
20230803.gzd

Chromosphere (H-α) FITS frames

H-α

The images are made automatically with a fixed, gentle rule: uneven illumination and most of the limb darkening are removed, and the brightness is shown on a linear scale (no sharpening); prominences get their own scale outside the limb. Frames are ordered by sharpness (seeing); frames without the Sun (darks, bias) come last. Method →

2023/20230803_bto · BTO · 6 frames · 128.6 MB · 07:51:30–07:56:52 UT

07:54:58 UT · 20 ms 07:56:52 UT · 30 ms 07:53:47 UT · 30 ms 07:51:30 UT · 50 ms · over-exposed 07:55:50 UT · 60 ms · over-exposed 07:52:46 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.