Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 25 May 2022

‹ 24.05.2022 2022 26.05.2022 ›

Photosphere sunspot drawing and RDS evaluation

25.05.2022 photosphere drawing

High-resolution scan (3228 px)

Time
08:40 UT
Observer
Oğuzhan ÇAKIR
g
8
f
40
R
120
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · EKC – 14Group 1 · EKC – 14 Group 2 · DAI – 9Group 2 · DAI – 9 Group 3 · BXI – 4Group 3 · BXI – 4 Group 4 · AX_ – 1Group 4 · AX_ – 1 Group 5 · HA_ – 3Group 5 · HA_ – 3 Group 6 · BXI – 5Group 6 · BXI – 5 Group 7 · HK_ – 3Group 7 · HK_ – 3 Group 8 · HS_ – 1Group 8 · HS_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=25.05.2022
Saat=08:40
Gözlemci=Oğuzhan ÇAKIR
KontrolEden=Korhan YELKENCİ
Durumaçısı=-17.8
Enlemaçısı=-1.5
Boylamaçısı=38.75
Boylamfark=2
GKalite=3
GDurum=G.T
Kuzeyaçısı=-0.4
Sırano=19442
AyRasatNo=22
RasatÖnceki=24.05.2022
RasatSonraki=26.05.2022

[Leke Grupları]
Grupsayısı=8:3:5
LekeSayısı=40:27:13
RölatifSayı=120:57:63
01=EKC 14 +22.445 +64.361 103.111 02.811 0000 0 +24.989 +69.931 +19.900 +58.791 +22.105 +69.550 +22.560 +59.740
02=DAI 09 +10.614 +49.974 088.724 01.798 0000 0 +11.842 +54.709 +09.386 +45.240 +10.345 +54.630 +10.614 +45.440
03=BXI 04 +13.565 -37.506 001.244 09.961 0000 0 +15.325 -35.199 +11.805 -39.812 +13.899 -35.525 +13.198 -39.523
04=AX_ 01 -18.842 +66.737 105.487 -1.000 0000 0 -18.842 +66.737 -18.842 +66.737
05=HA_ 03 -21.370 -27.762 010.988 +0.000 0000 0 -20.460 -27.197 -21.615 -28.327 -21.370 -27.697 -21.370 -27.827
06=BXI 05 -07.814 -53.250 345.500 07.383 0000 0 -06.683 -51.313 -08.945 -55.187 -07.670 -51.834 -08.630 -54.863
07=HK_ 03 -14.211 -76.840 321.910 +0.000 0000 0 -12.885 -74.631 -15.536 -79.500 -14.211 -74.905 -14.211 -78.774
08=HS_ 01 -33.850 -82.680 316.682 +0.000 0000 0 -32.441 -79.437 -33.728 -84.699 -33.850 -80.549 -33.850 -84.811
20220525.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 →

2022/20220525_oc · OC · 15 frames · 321.4 MB · 09:14:02–09:32:24 UT

09:28:56 UT · 30 ms 09:31:42 UT · 30 ms 09:14:02 UT · 30 ms 09:15:21 UT · 60 ms · over-exposed 09:32:24 UT · 60 ms · over-exposed 09:29:45 UT · 60 ms · over-exposed 09:23:54 UT · 60 ms 09:22:43 UT · 60 ms 09:21:56 UT · 60 ms 09:20:31 UT · 30 ms 09:19:45 UT · 30 ms 09:18:56 UT · 30 ms 09:18:04 UT 09:17:04 UT 09:16:13 UT

Coronado H-α animations from frame sequences

No Coronado observation for this day.