Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Monday, 27 December 2021

‹ 25.12.2021 2021 28.12.2021 ›

Photosphere sunspot drawing and RDS evaluation

27.12.2021 photosphere drawing

High-resolution scan (3235 px)

Time
08:40 UT
Observer
Hikmet ÇAKMAK
g
8
f
56
R
136
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · BXO – 3Group 1 · BXO – 3 Group 2 · BXO – 5Group 2 · BXO – 5 Group 3 · CAI – 18Group 3 · CAI – 18 Group 4 · BXI – 8Group 4 · BXI – 8 Group 5 · AX_ – 1Group 5 · AX_ – 1 Group 6 · HA_ – 2Group 6 · HA_ – 2 Group 7 · DAI – 18Group 7 · DAI – 18 Group 8 · AX_ – 1Group 8 · AX_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=27.12.2021
Saat=08:40
Gözlemci=Hikmet ÇAKMAK
KontrolEden=Talar YONTAN
Durumaçısı=4.32
Enlemaçısı=-2.44
Boylamaçısı=203.66
Boylamfark=2
GKalite=3
GDurum=G.T , H.S
Kuzeyaçısı=-0.3
Sırano=19348
AyRasatNo=17
RasatÖnceki=25.12.2021
RasatSonraki=28.12.2021

[Leke Grupları]
Grupsayısı=8:3:5
LekeSayısı=56:26:30
RölatifSayı=136:56:80
01=BXO 03 +30.164 +37.641 241.301 +0.000 0000 0 +30.582 +40.670 +29.746 +35.214 +30.164 +39.869 +30.164 +35.413
02=BXO 05 +20.918 +21.997 225.657 09.768 0000 0 +21.951 +24.313 +19.884 +19.682 +20.371 +23.852 +21.300 +20.179
03=CAI 18 +20.459 +04.187 207.847 12.994 0000 0 +22.300 +09.909 +18.618 -01.535 +19.870 +06.683 +20.890 -01.156
04=BXI 08 -16.544 +34.749 238.409 20.410 0000 0 -15.286 +37.142 -17.802 +32.357 -17.398 +36.360 -16.260 +32.595
05=AX_ 01 -19.131 +02.401 206.610 -1.000 0000 0 -19.131 +02.401 -19.131 +02.401
06=HA_ 02 -15.925 -08.778 194.882 +0.000 0000 0 -14.676 -07.361 -17.174 -10.195 -15.925 -07.861 -15.925 -09.695
07=DAI 18 -16.120 -16.180 187.480 11.661 0000 0 -13.761 -11.733 -18.479 -20.628 -16.205 -12.606 -15.400 -18.261
08=AX_ 01 -11.243 -49.189 154.471 +0.000 0000 0 -10.880 -48.884 -11.607 -49.494 -11.243 -49.384 -11.243 -48.994
20211227.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 →

2021/20211227_hc · HC · 5 frames · 107.1 MB · 08:41:16–09:00:36 UT

08:41:16 UT · 40 ms 09:00:36 UT · 40 ms 08:47:46 UT · 70 ms · over-exposed 08:58:20 UT · 80 ms · over-exposed 08:55:10 UT

Coronado H-α animations from frame sequences

No Coronado observation for this day.