Sunspots 2740, 2741 - 11 May 2019

Sunspots 2740, 2741, 11/05/2019 - full disk photo
Sunspots 2740, 2741, 11/05/2019 - full disk (click for a full image)
A zoom on mercury transit and a sunspot group
Sunspots 2740, 2741 - "zoom in" fragments

Photos taken from Cabri, northern Israel, may 11th, 2019, 13:30 (UTC+3).

Instrument: 80mm F/7 Stellarvue ED refractor, Televue Powermate 2.5x, Vixen Porta Pro II mount (manual guiding), ASI290MC camera, DIY white light filter (Baader astrosolar film).

Capture and Processing: Firecapture, PIPP, Autostakkert, Registax, Photoshop.

Full disk photo: Focal length 560mm, exposure 0.4ms , gain 100, mosaic of 2 images, stack of 200/2000 frames each.

Sunspots fragments photo: 2.5x powermate, focal length 1400mm, exposure 2.8ms, gain 100, stack of 250/6000 frames each.