Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Saturday, 2 September 2023

‹ 01.09.2023 2023 03.09.2023 ›

Photosphere sunspot drawing and RDS evaluation

02.09.2023 photosphere drawing

High-resolution scan (3233 px)

Time
08:25 UT
Observer
Hikmet ÇAKMAK
g
7
f
28
R
98
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · ?__ – 5Group 1 · ?__ – 5 Group 2 · BXO – 4Group 2 · BXO – 4 Group 3 · HR_ – 1Group 3 · HR_ – 1 Group 4 · HA_ – 3Group 4 · HA_ – 3 Group 5 · AX_ – 1Group 5 · AX_ – 1 Group 6 · CRI – 9Group 6 · CRI – 9 Group 7 · BXI – 5Group 7 · BXI – 5
RDS data file (.gzd) 
[Gözlem]
Tarih=2.09.2023
Saat=08:25
Gözlemci=Hikmet ÇAKMAK
KontrolEden=Korhan YELKENCİ
Durumaçısı=21.3
Enlemaçısı=7.2
Boylamaçısı=18.48
Boylamfark=2
GKalite=3
GDurum=G.T , H.S
Kuzeyaçısı=-0.5
Sırano=19810
AyRasatNo=2
RasatÖnceki=01.09.2023
RasatSonraki=03.09.2023

[Leke Grupları]
Grupsayısı=7:3:4
LekeSayısı=28:10:18
RölatifSayı=98:40:58
01=?__ 05 +09.634 +83.682 102.162 +0.000 0000 0 +12.963 +87.901 +06.305 +79.463 +09.634 +87.401 +09.634 +79.963
02=BXO 04 +24.469 +27.929 046.409 20.643 0000 0 +25.378 +29.523 +23.561 +26.334 +23.931 +28.870 +24.732 +26.744
03=HR_ 01 +21.173 -32.634 345.846 +0.000 0000 0 +21.624 -32.116 +20.721 -33.152 +21.173 -32.616 +21.173 -32.652
04=HA_ 03 -07.599 +60.799 079.279 +0.000 0000 0 -06.288 +62.821 -08.911 +58.777 -07.599 +62.321 -07.599 +59.277
05=AX_ 01 -18.276 +28.257 046.737 -1.000 0000 0 -18.276 +28.257 -18.276 +28.257
06=CRI 09 -05.573 -14.117 004.363 19.186 0000 0 -04.640 -11.256 -07.820 -16.978 -06.276 -11.883 -04.704 -16.405
07=BXI 05 -08.670 -21.128 357.352 12.224 0000 0 -07.851 -19.211 -09.490 -23.460 -09.500 -19.739 -08.383 -22.819
20230902.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 →

2023/20230902_hc · HC · 6 frames · 128.6 MB · 08:32:26–09:42:08 UT

08:59:51 UT · 40 ms 08:37:55 UT · 40 ms 09:42:08 UT · 40 ms 08:32:26 UT · 40 ms 09:02:00 UT · 70 ms · over-exposed 08:36:07 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.