Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Monday, 1 May 2023

‹ 30.04.2023 2023 02.05.2023 ›

Photosphere sunspot drawing and RDS evaluation

01.05.2023 photosphere drawing

High-resolution scan (3230 px)

Time
07:50 UT
Observer
Ergün EGE
g
5
f
27
R
77
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 1Group 1 · AX_ – 1 Group 2 · CAI – 11Group 2 · CAI – 11 Group 3 · DAI – 4Group 3 · DAI – 4 Group 4 · CAO – 3Group 4 · CAO – 3 Group 5 · ESC – 8Group 5 · ESC – 8
RDS data file (.gzd) 
[Gözlem]
Tarih=1.05.2023
Saat=07:50
Gözlemci=Ergün EGE
KontrolEden=Korhan YELKENCİ
Durumaçısı=-24.11
Enlemaçısı=-4.19
Boylamaçısı=218.83
Boylamfark=2
GKalite=3
GDurum=
Kuzeyaçısı=-0.1
Sırano=19702
AyRasatNo=1
RasatÖnceki=30.04.2023
RasatSonraki=02.05.2023

[Leke Grupları]
Grupsayısı=5:3:2
LekeSayısı=27:16:11
RölatifSayı=77:46:31
01=AX_ 01 +06.309 +51.640 269.894 +0.000 0000 0 +06.640 +51.504 +05.978 +50.624 +06.309 +51.580 +06.309 +51.700
02=CAI 11 +17.512 -06.302 212.528 +0.000 0000 0 +21.156 -01.987 +13.869 -10.617 +17.512 -02.187 +17.512 -10.417
03=DAI 04 +11.752 -71.217 147.613 +0.000 0000 0 +13.725 -67.430 +09.780 -75.500 +11.752 -67.630 +11.752 -74.805
04=CAO 03 -17.189 +53.309 272.139 +0.000 0000 0 -15.832 +55.612 -18.545 +51.600 -17.189 +55.412 -17.189 +51.206
05=ESC 08 -22.772 +46.100 264.930 +0.000 0000 0 -20.250 +53.546 -25.519 +38.654 -22.772 +53.346 -22.772 +38.854
20230501.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 →

2023/20230501_ee · EE · 8 frames · 171.4 MB · 07:56:50–08:19:16 UT

07:56:50 UT · 30 ms 07:58:42 UT · 40 ms 08:17:40 UT · 40 ms 08:17:05 UT · 30 ms 08:02:03 UT · 50 ms · over-exposed 08:18:39 UT · 50 ms · over-exposed 08:06:20 UT · 60 ms · over-exposed 08:19:16 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.