Images 04.08.2021 · Istanbul University Observatory Solar Observations

Solar Images Wednesday, 4 August 2021

‹ 03.08.2021 2021 05.08.2021 ›

Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3231 px)

Time: 07:55 UT
Observer: Oğuzhan ÇAKIR
g: 2
f: 8
R: 28
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · CRI – 6

Group 2 · BXO – 2

RDS data file (.gzd)

[Gözlem]
Tarih=4.08.2021
Saat=07:55
Gözlemci=Oğuzhan ÇAKIR
KontrolEden=Süleyman FİŞEK
Durumaçısı=12.17
Enlemaçısı=6.01
Boylamaçısı=317.14
Boylamfark=2
GKalite=3
GDurum=G.T
Kuzeyaçısı=-0.4
Sırano=19236
AyRasatNo=4
RasatÖnceki=03.08.2021
RasatSonraki=05.08.2021

[Leke Grupları]
Grupsayısı=2:0:2
LekeSayısı=8:0:8
RölatifSayı=28:0:28
01=CRI 06 -31.584 +46.910 003.231 09.351 0000 0 -30.604 +50.900 -32.563 +42.174 -31.126 +48.693 -32.330 +43.173
02=BXO 02 -10.855 -65.669 251.471 20.177 0000 0 -09.977 -63.776 -11.733 -67.562 -11.316 -64.884 -10.453 -67.235

20210804.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 →

2021/20210804_oc · OC · 10 frames · 214.3 MB · 08:17:50–08:29:34 UT

08:28:44 UT · 30 ms