Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 18 January 2023

‹ 16.01.2023 2023 19.01.2023 ›

Photosphere sunspot drawing and RDS evaluation

18.01.2023 photosphere drawing

High-resolution scan (3222 px)

Time
10:00 UT
Observer
O.PLEVNE=B.C.
g
10
f
99
R
199
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · EHI – 7Group 1 · EHI – 7 Group 2 · BXI – 4Group 2 · BXI – 4 Group 3 · DSI – 13Group 3 · DSI – 13 Group 4 · FKC – 28Group 4 · FKC – 28 Group 5 · BXI – 4Group 5 · BXI – 4 Group 6 · AX_ – 1Group 6 · AX_ – 1 Group 7 · BXO – 2Group 7 · BXO – 2 Group 8 · DSI – 5Group 8 · DSI – 5 Group 9 · AX_ – 4Group 9 · AX_ – 4 Group 10 · EKI – 31Group 10 · EKI – 31
RDS data file (.gzd) 
[Gözlem]
Tarih=18.01.2023
Saat=10:00
Gözlemci=O.PLEVNE=B.C.
KontrolEden=Burçin TANIK
Durumaçısı=-6.11
Enlemaçısı=-4.84
Boylamaçısı=135.63
Boylamfark=1
GKalite=3
GDurum=K.T
Kuzeyaçısı=0.0
Sırano=19640
AyRasatNo=11
RasatÖnceki=16.01.2023
RasatSonraki=19.01.2023

[Leke Grupları]
Grupsayısı=10:6:4
LekeSayısı=99:57:42
RölatifSayı=199:117:82
01=EHI 07 +24.366 +32.276 167.906 +0.000 0000 0 +27.942 +39.644 +20.790 +24.907 +24.366 +39.444 +24.366 +25.107
02=BXI 04 +21.150 +00.900 135.639 +0.000 0000 0 +21.597 +03.270 +20.434 -03.253 +21.150 +03.661 +21.150 -01.861
03=DSI 13 +10.898 -07.480 128.582 +0.000 0000 0 +12.299 -02.900 +09.498 -12.700 +10.898 -02.290 +10.898 -11.807
04=FKC 28 +15.901 -23.537 112.930 +0.000 0000 0 +20.960 -14.601 +10.841 -32.474 +15.901 -14.801 +15.901 -32.274
05=BXI 04 +12.226 -54.324 081.306 +0.000 0000 0 +13.296 -52.930 +11.156 -56.554 +12.226 -52.293 +12.226 -56.354
06=AX_ 01 +25.343 -78.427 057.203 -1.000 0000 0 +25.343 -78.427 +25.343 -78.427
07=BXO 02 -21.985 +61.133 196.763 +0.000 0000 0 -20.974 +62.944 -22.995 +59.322 -21.985 +62.744 -21.985 +59.522
08=DSI 05 -13.246 +43.700 178.637 +0.000 0000 0 -11.616 +46.144 -14.876 +39.870 -13.246 +45.944 -13.246 +40.700
09=AX_ 04 -23.676 +05.813 141.443 +0.000 0000 0 -22.895 +07.236 -24.457 +04.391 -23.676 +06.736 -23.676 +04.891
10=EKI 31 -14.410 -18.294 117.336 +0.000 0000 0 -11.359 -11.664 -17.460 -24.925 -14.410 -11.864 -14.410 -24.725
20230118.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 →

2023/20230118-op · · 4 frames · 85.7 MB · 10:02:58–10:08:19 UT

10:05:16 UT · 30 ms 10:02:58 UT · 30 ms 10:07:36 UT · 60 ms · over-exposed 10:08:19 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.