Images 16.08.2021 · Istanbul University Observatory Solar Observations

Solar Images Monday, 16 August 2021

‹ 15.08.2021 2021 17.08.2021 ›

Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3229 px)

Time: 08:20 UT
Observer: Hikmet ÇAKMAK
g: 3
f: 8
R: 38
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 1

Group 2 · CRI – 6

Group 3 · AX_ – 1

RDS data file (.gzd)

[Gözlem]
Tarih=16.08.2021
Saat=08:20
Gözlemci=Hikmet ÇAKMAK
KontrolEden=Oğuzhan ÇAKIR
Durumaçısı=16.49
Enlemaçısı=6.7
Boylamaçısı=158.26
Boylamfark=2
GKalite=3
GDurum=G.T , H.S
Kuzeyaçısı=-0.1
Sırano=19248
AyRasatNo=16
RasatÖnceki=15.08.2021
RasatSonraki=17.08.2021

[Leke Grupları]
Grupsayısı=3:3:0
LekeSayısı=8:8:0
RölatifSayı=38:38:0
01=AX_ 01 +26.587 +34.490 192.309 -1.000 0000 0 +26.587 +34.490 +26.587 +34.490
02=CRI 06 +18.400 +16.219 174.479 07.644 0000 0 +18.885 +17.976 +17.194 +14.461 +18.980 +17.233 +17.775 +14.825
03=AX_ 01 +14.237 -05.217 153.430 -1.000 0000 0 +14.237 -05.217 +14.237 -05.217

20210816.gzd

Chromosphere (H-α) FITS frames

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 →

2021/20210816_hc · HC · 10 frames · 214.3 MB · 08:15:15–08:46:34 UT

08:17:58 UT · 40 ms