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Baily's Beads just before 2nd Contact, 


            Gilbert Ikezaki

Baily's Beads just before 2nd Contact

Technical card

Resolution: 4373x2460

Date:Aug. 21, 2017

Frames: 1

Focal length: 600

Data source: Traveller


They say shouldn't you shouldn't try to take a photograph when you observe your first total eclipse of the Sun. Given that several articles and lectures have the same statement, I decided to compromise. Using a tracker to keep the Sun in the frame, I used an intervalometer to to snap one set of three +/-2 stops, bracketed, RAW frames each 15 seconds. With not very good polar alignment, and a tracker that only does sidereal, I started my session about 5 min before totality, and kept it going for about 5 min after. Some people say you should set exposure manually, others say full auto is OK, so given my expected lack of attention, I set the camera on -3 stops, center-weighted average program mode. The eclipse by the naked eye was glorious. When I got home, I was surprised to see I got both diamond rings, both Baily's beads, and the totality.

Exposure for 600mm f/8:
1/125s @ ISO100

Location: Brigham Young University, Rexburg, Idaho, USA.



Gilbert Ikezaki
License: Attribution-NonCommercial-ShareAlike Creative Commons


Baily's Beads just before 2nd Contact, 


            Gilbert Ikezaki