Solar Images Friday, 18 April 2025
‹ 17.04.2025 2025 21.04.2025 ›Photosphere sunspot drawing and RDS evaluation
- Time
- 10:10 UT
- Observer
- Ergün EGE
- g
- 6
- f
- 34
- R
- 94
- Seeing
- 3 / 5
Sunspot groups and observation details →
Sunspot groups (from the drawing)
Group 1 · HH_ – 4
Group 2 · DAI – 7
Group 3 · AX_ – 1
Group 4 · FKC – 17
Group 5 · HS_ – 1
Group 6 · DSO – 4
RDS data file (.gzd)
[Gözlem] Tarih=18.04.2025 Saat=10:10 Gözlemci=Ergün EGE KontrolEden=Korhan YELKENCİ Durumaçısı=-25.75 Enlemaçısı=-5.34 Boylamaçısı=101.17 Boylamfark=1 GKalite=3 GDurum=G.T , H.S Kuzeyaçısı=0.0 Sırano=20227 AyRasatNo=11 RasatÖnceki=17.04.2025 RasatSonraki=21.04.2025 [Leke Grupları] Grupsayısı=6:2:4 LekeSayısı=34:11:23 RölatifSayı=94:31:63 01=HH_ 04 +07.573 +30.598 131.768 +0.000 0000 0 +08.796 +32.230 +06.350 +29.172 +07.573 +31.627 +07.573 +29.569 02=DAI 07 +08.911 -55.690 046.101 +0.000 0000 0 +10.887 -50.160 +06.936 -59.977 +08.911 -50.360 +08.911 -59.777 03=AX_ 01 -06.976 +75.530 176.223 +0.000 0000 0 -06.597 +75.810 -07.356 +74.296 -06.976 +75.787 -06.976 +75.273 04=FKC 17 -03.911 -38.364 062.806 +0.000 0000 0 -01.758 -30.261 -06.650 -46.467 -03.911 -30.461 -03.911 -46.267 05=HS_ 01 -30.465 -56.584 044.586 +0.000 0000 0 -29.861 -55.315 -31.690 -57.853 -30.465 -55.815 -30.465 -57.353 06=DSO 04 -03.846 -63.498 037.672 +0.000 0000 0 -03.400 -59.673 -04.651 -67.323 -03.846 -59.873 -03.846 -67.12320250418.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 →
2025/20250418_ee · EE · 1 frames · 21.4 MB · 09:44:53 UT
Coronado H-α animations from frame sequences
No Coronado observation for this day.