Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Tuesday, 17 May 2022

‹ 16.05.2022 2022 18.05.2022 ›

Photosphere sunspot drawing and RDS evaluation

17.05.2022 photosphere drawing

High-resolution scan (3229 px)

Time
08:25 UT
Observer
H.ÇAKMAK=T.Y.
g
8
f
92
R
172
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 1Group 1 · AX_ – 1 Group 2 · CAO – 9Group 2 · CAO – 9 Group 3 · DAI – 23Group 3 · DAI – 23 Group 4 · ?__ – 3Group 4 · ?__ – 3 Group 5 · EAC – 27Group 5 · EAC – 27 Group 6 · EAI – 24Group 6 · EAI – 24 Group 7 · AX_ – 1Group 7 · AX_ – 1 Group 8 · DAO – 4Group 8 · DAO – 4
RDS data file (.gzd) 
[Gözlem]
Tarih=17.05.2022
Saat=08:25
Gözlemci=H.ÇAKMAK=T.Y.
KontrolEden=Özgecan ÖNALTAŞ
Durumaçısı=-20.31
Enlemaçısı=-2.43
Boylamaçısı=144.72
Boylamfark=2
GKalite=3
GDurum=G.T , H.S
Kuzeyaçısı=-0.5
Sırano=19434
AyRasatNo=14
RasatÖnceki=16.05.2022
RasatSonraki=18.05.2022

[Leke Grupları]
Grupsayısı=8:4:4
LekeSayısı=92:36:56
RölatifSayı=172:76:96
01=AX_ 01 +17.411 -17.658 127.620 -1.000 0000 0 +17.411 -17.658 +17.411 -17.658
02=CAO 09 +14.370 -36.235 108.485 04.921 0000 0 +15.255 -33.443 +12.820 -39.270 +13.491 -34.263 +13.841 -38.331
03=DAI 23 +21.493 -39.663 105.570 15.893 0000 0 +23.229 -34.708 +19.756 -44.617 +22.106 -36.817 +20.338 -43.380
04=?__ 03 +13.537 -60.904 083.816 +0.000 0000 0 +14.608 -56.214 +12.465 -65.594 +13.537 -56.714 +13.537 -65.940
05=EAC 27 -23.000 +36.887 181.607 09.668 0000 0 -19.893 +43.398 -26.107 +30.375 -22.971 +41.688 -24.682 +31.586
06=EAI 24 -14.920 -20.186 124.534 09.870 0000 0 -11.833 -12.901 -18.600 -27.471 -15.479 -17.375 -17.120 -27.100
07=AX_ 01 -11.546 -62.590 082.130 -1.000 0000 0 -11.546 -62.590 -11.546 -62.590
08=DAO 04 -17.910 -70.693 074.270 06.920 0000 0 -16.988 -65.887 -18.832 -75.499 -17.685 -66.984 -18.496 -74.606
20220517.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 →

2022/20220517_hc · HC · 14 frames · 300.0 MB · 08:23:22–09:30:01 UT

08:23:22 UT · 30 ms 08:45:03 UT · 30 ms 08:36:36 UT · 30 ms 08:34:13 UT · 30 ms 08:49:38 UT · 30 ms 08:43:32 UT · 30 ms 08:41:28 UT · 30 ms 08:46:21 UT · 30 ms 08:27:29 UT · 30 ms 08:57:50 UT · 30 ms 09:01:05 UT · 30 ms 09:04:14 UT · 60 ms · over-exposed 08:26:22 UT · 60 ms · over-exposed 09:30:01 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.