Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Sunday, 21 August 2022

‹ 20.08.2022 2022 22.08.2022 ›

Photosphere sunspot drawing and RDS evaluation

21.08.2022 photosphere drawing

High-resolution scan (3231 px)

Time
12:45 UT
Observer
Hikmet ÇAKMAK
g
5
f
18
R
68
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HA_ – 4Group 1 · HA_ – 4 Group 2 · BXO – 3Group 2 · BXO – 3 Group 3 · BXI – 6Group 3 · BXI – 6 Group 4 · AX_ – 1Group 4 · AX_ – 1 Group 5 · BXO – 4Group 5 · BXO – 4
RDS data file (.gzd) 
[Gözlem]
Tarih=21.08.2022
Saat=12:45
Gözlemci=Hikmet ÇAKMAK
KontrolEden=Ergün EGE
Durumaçısı=18.07
Enlemaçısı=6.91
Boylamaçısı=312.2
Boylamfark=0
GKalite=3
GDurum=G.T , H.S
Kuzeyaçısı=-0.5
Sırano=19528
AyRasatNo=21
RasatÖnceki=20.08.2022
RasatSonraki=22.08.2022

[Leke Grupları]
Grupsayısı=5:3:2
LekeSayısı=18:13:5
RölatifSayı=68:43:25
01=HA_ 04 +10.777 +58.954 011.154 +0.000 0000 0 +12.243 +60.350 +09.311 +57.558 +10.777 +59.850 +10.777 +58.580
02=BXO 03 +27.107 +08.778 320.978 15.328 0000 0 +28.737 +13.329 +25.476 +04.227 +26.800 +12.731 +28.264 +04.467
03=BXI 06 +30.166 -21.834 290.366 17.461 0000 0 +31.980 -19.396 +29.233 -24.271 +30.712 -20.195 +29.757 -23.233
04=AX_ 01 -08.138 +14.813 327.130 -1.000 0000 0 -08.138 +14.813 -08.138 +14.813
05=BXO 04 -11.362 +08.662 320.862 +0.000 0000 0 -10.573 +10.168 -12.151 +07.156 -11.362 +09.668 -11.362 +07.656
20220821.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 →

2022/20220821_hc · HC · 3 frames · 64.3 MB · 12:45:11–12:52:16 UT

12:50:27 UT · 30 ms 12:52:16 UT · 60 ms · over-exposed 12:45:11 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.