Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Sunday, 27 October 2024

‹ 26.10.2024 2024 28.10.2024 ›

Photosphere sunspot drawing and RDS evaluation

27.10.2024 photosphere drawing

High-resolution scan (3222 px)

Time
12:00 UT
Observer
O.PLEVNE=S.F.
g
8
f
115
R
195
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · DAI – 16Group 1 · DAI – 16 Group 2 · BXI – 11Group 2 · BXI – 11 Group 3 · CSI – 2Group 3 · CSI – 2 Group 4 · CSI – 7Group 4 · CSI – 7 Group 5 · BXI – 5Group 5 · BXI – 5 Group 6 · HS_ – 2Group 6 · HS_ – 2 Group 7 · CSI – 22Group 7 · CSI – 22 Group 8 · FKC – 50Group 8 · FKC – 50
RDS data file (.gzd) 
[Gözlem]
Tarih=27.10.2024
Saat=12:00
Gözlemci=O.PLEVNE=S.F.
KontrolEden=Süleyman FİŞEK
Durumaçısı=25.09
Enlemaçısı=4.8
Boylamaçısı=219.93
Boylamfark=0
GKalite=3
GDurum=K.T
Kuzeyaçısı=0.0
Sırano=20130
AyRasatNo=23
RasatÖnceki=26.10.2024
RasatSonraki=28.10.2024

[Leke Grupları]
Grupsayısı=8:2:6
LekeSayısı=115:27:88
RölatifSayı=195:47:148
01=DAI 16 +23.889 -02.555 217.375 +0.000 0000 0 +25.396 +02.607 +22.382 -07.718 +23.889 +02.407 +23.889 -07.518
02=BXI 11 +27.357 -16.672 203.258 +0.000 0000 0 +29.770 -12.764 +24.945 -20.581 +27.357 -12.964 +27.357 -20.381
03=CSI 02 -19.771 +64.443 284.373 +0.000 0000 0 -18.609 +69.425 -20.933 +59.461 -19.771 +69.225 -19.771 +59.661
04=CSI 07 -09.529 +42.441 262.371 +0.000 0000 0 -08.274 +46.175 -10.784 +38.708 -09.529 +45.975 -09.529 +38.908
05=BXI 05 -12.184 +16.559 236.489 +0.000 0000 0 -10.453 +17.490 -13.914 +16.690 -12.184 +16.459 -12.184 +16.659
06=HS_ 02 -10.693 -02.178 217.752 +0.000 0000 0 -09.113 -00.756 -12.272 -03.601 -10.693 -01.255 -10.693 -03.101
07=CSI 22 -03.870 -15.175 204.755 +0.000 0000 0 -01.580 -10.839 -06.682 -19.511 -03.870 -11.390 -03.870 -19.311
08=FKC 50 -13.566 -32.121 187.809 +0.000 0000 0 -07.195 -16.593 -19.937 -47.650 -13.566 -16.793 -13.566 -47.450
20241027.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 →

2024/20241027_op · OP · 4 frames · 85.7 MB · 11:58:37–12:05:47 UT

11:58:37 UT · 30 ms 11:58:37 UT · 30 ms 12:05:47 UT · 50 ms · over-exposed 12:04:05 UT · 50 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.