Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Sunday, 15 October 2023

‹ 14.10.2023 2023 17.10.2023 ›

Photosphere sunspot drawing and RDS evaluation

15.10.2023 photosphere drawing

High-resolution scan (3218 px)

Time
09:20 UT
Observer
Başar COŞKUNOĞLU
g
6
f
38
R
98
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXI – 8Group 1 · BXI – 8 Group 2 · DSI – 8Group 2 · DSI – 8 Group 3 · HK_ – 12Group 3 · HK_ – 12 Group 4 · BXI – 5Group 4 · BXI – 5 Group 5 · HS_ – 1Group 5 · HS_ – 1 Group 6 · BXI – 4Group 6 · BXI – 4
RDS data file (.gzd) 
[Gözlem]
Tarih=15.10.2023
Saat=09:20
Gözlemci=Başar COŞKUNOĞLU
KontrolEden=Korhan YELKENCİ
Durumaçısı=26.17
Enlemaçısı=5.88
Boylamaçısı=170.41
Boylamfark=1
GKalite=3
GDurum=
Kuzeyaçısı=-0.4
Sırano=19848
AyRasatNo=13
RasatÖnceki=14.10.2023
RasatSonraki=17.10.2023

[Leke Grupları]
Grupsayısı=6:4:2
LekeSayısı=38:33:5
RölatifSayı=98:73:25
01=BXI 08 +09.394 +40.300 210.413 20.870 0000 0 +10.803 +43.476 +07.985 +36.531 +08.347 +43.120 +10.568 +37.320
02=DSI 08 +06.210 -02.742 167.668 +0.000 0000 0 +07.202 -00.646 +05.218 -04.838 +06.210 -00.846 +06.210 -04.638
03=HK_ 12 +12.417 -25.859 144.551 +0.000 0000 0 +14.385 -24.104 +10.449 -27.613 +12.417 -24.604 +12.417 -27.113
04=BXI 05 +12.927 -66.350 104.375 +0.000 0000 0 +14.345 -59.814 +11.508 -72.256 +12.927 -60.140 +12.927 -72.560
05=HS_ 01 -09.928 +67.345 237.755 +0.000 0000 0 -09.550 +68.252 -10.800 +66.438 -09.928 +67.752 -09.928 +66.938
06=BXI 04 -17.268 +07.324 177.734 14.717 0000 0 -16.178 +10.883 -18.359 +03.764 -18.156 +10.477 -16.486 +04.102
20231015.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 →

2023/20231015_bc · BC · 6 frames · 128.6 MB · 09:29:32–09:35:20 UT

09:29:32 UT · 40 ms 09:30:38 UT · 40 ms 09:31:28 UT · 40 ms 09:32:42 UT · 70 ms · over-exposed 09:35:20 UT · 70 ms · over-exposed 09:33:21 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.