Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Friday, 2 February 2024

‹ 01.02.2024 2024 03.02.2024 ›

Photosphere sunspot drawing and RDS evaluation

02.02.2024 photosphere drawing

High-resolution scan (3236 px)

Time
07:50 UT
Observer
Hikmet ÇAKMAK
g
9
f
39
R
129
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · CRO – 2Group 1 · CRO – 2 Group 2 · BXI – 7Group 2 · BXI – 7 Group 3 · AX_ – 1Group 3 · AX_ – 1 Group 4 · BXI – 18Group 4 · BXI – 18 Group 5 · HA_ – 1Group 5 · HA_ – 1 Group 6 · HA_ – 1Group 6 · HA_ – 1 Group 7 · AX_ – 2Group 7 · AX_ – 2 Group 8 · BXI – 5Group 8 · BXI – 5 Group 9 · HA_ – 2Group 9 · HA_ – 2
RDS data file (.gzd) 
[Gözlem]
Tarih=2.02.2024
Saat=07:50
Gözlemci=Hikmet ÇAKMAK
KontrolEden=Ergün EGE
Durumaçısı=-12.48
Enlemaçısı=-6.06
Boylamaçısı=161.76
Boylamfark=2
GKalite=3
GDurum=G.T , B.A , H.S
Kuzeyaçısı=-0.4
Sırano=19910
AyRasatNo=2
RasatÖnceki=01.02.2024
RasatSonraki=03.02.2024

[Leke Grupları]
Grupsayısı=9:6:3
LekeSayısı=39:30:9
RölatifSayı=129:90:39
01=CRO 02 +21.817 -04.822 156.938 16.445 0000 0 +22.727 -02.602 +20.907 -07.410 +21.217 -02.994 +22.280 -06.598
02=BXI 07 +05.614 -08.256 153.504 32.682 0000 0 +07.770 -05.809 +03.459 -10.704 +04.420 -06.392 +06.792 -10.950
03=AX_ 01 +15.347 -25.726 136.340 -1.000 0000 0 +15.347 -25.726 +15.347 -25.726
04=BXI 18 +19.785 -31.623 130.137 14.642 0000 0 +21.624 -27.640 +17.946 -35.606 +18.607 -28.549 +20.122 -34.356
05=HA_ 01 +15.390 -64.529 097.231 +0.000 0000 0 +15.993 -63.863 +14.788 -65.196 +15.390 -64.363 +15.390 -64.695
06=HA_ 01 +15.240 -69.696 092.640 +0.000 0000 0 +16.180 -68.706 +14.462 -70.686 +15.240 -69.206 +15.240 -70.186
07=AX_ 02 -36.621 +12.539 174.299 +0.000 0000 0 -35.648 +13.315 -37.595 +11.763 -36.621 +12.815 -36.621 +12.263
08=BXI 05 -03.866 -44.101 117.659 25.722 0000 0 -02.720 -41.321 -05.659 -46.880 -02.857 -42.530 -05.290 -46.568
09=HA_ 02 -17.414 -59.239 102.521 +0.000 0000 0 -15.488 -57.694 -19.341 -60.784 -17.414 -58.194 -17.414 -60.284
20240202.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 →

2024/20240202_hc · HC · 5 frames · 107.1 MB · 07:51:49–08:06:34 UT

07:59:06 UT · 90 ms 07:51:49 UT · 50 ms 08:06:34 UT · 50 ms 08:05:03 UT · 90 ms 07:56:32 UT · 50 ms

Coronado H-α animations from frame sequences

No Coronado observation for this day.