See also Annular and Partial Solar Eclipses.
The observation site was in Guernsey State Park in Wyoming, USA for the 21st August 2017 Total Solar Eclipse (totality lasted 2 min 18 s). Images taken with a DSLR on a 70 mm refractor (Pronto). ISO 200. The camera was rotated somewhat relative to the horizon.
The corona observed was of the (solar cycle) minimum type. This eclipse was one saros period after the 1999 total solar eclipse, which I observed in Bulgaria.
Observed from Maitland Downs in the outback of Queensland on 13th November 2012. Totality lasted 2 minutes 3 seconds. Slight cirrus present. Taken with a Canon 500D DSLR and a 60 mm FS-60C refractor operating at a focal length of 373 mm, driven on an equatorial drive. ISO 200.
The corona observed was of the (solar cycle) maximum type. This eclipse was one saros period after the 1994 total solar eclipse, which I observed in the Chilean Andes.
The eclipse of 11th July 2010 was observed at sea on the Freighter/Cruise ship Aranui 3. The site was about 10 km north of Marokau, one of the Tuamotos of French Polynesia (over 700 km east of Tahiti). Totality, which lasted 4 minutes 17 seconds, occured early in the morning. The ship steamed east to avoid cloud. In the seconds before 2nd contact a small cloud produced an atmospheric halo around the sun. The cloud cleared just in time to get the first diamond ring and the sky remained clear thereafter.
My DSLR succumbed to the tropical rain a few days before the eclipse, but I got a few shots with a Canon PowerShot A590 point and shoot digital camera (Focal length 23 mm) set at f/8. The ISO was set at 200.
The eclipse of 22nd July 2009 observed beside a lake, south-west of Huzhou at Chengshanjou, China. Totality lasted 5 minutes 48 seconds. On the morning of the eclipse it was raining. During the eclipse there was always cloud of varying thickness, with the first minute or so of totality opaque.
The photos, cropped, were taken with a Canon 350D DSLR camera with a 55 mm lens (with ISO set at 200). Why only 55 mm focal lenght? - the sky was so cloudy it was impossible to find the sun with my small field-of-view 500 mm focal length catadioptric lens.
This eclipse was one saros period after my first total solar eclipse in Hawaii in 1991.
The eclipse in the Sahara occured on the 29th March 2006. I was on the Travelquest/S&T expedition at the site in the middle of the desert 120 km south of Tobruk, Libya. Totality lasted 3 minutes and 59 seconds. Imaged with a 60 mm FS-60C refractor operating at 390 mm with a Canon 350D DSLR camera (set at ISO 200), undriven.
Observed from Koolymilka in deserts of South Australia on 4th December 2002. Totality lasted just 29 seconds!
A multiple exposure taken on a single frame of Ektachrome 100 slide film. Taken with a 50 mm focal length lens. Partial phases at 1/1000 second and total phase at 1/15 second.
The eclipse of 21st June 2001 observed from Ruya river valley on the Lowveld of Zimbabwe. Totality lasted 3 minutes 20 seconds. The Photos were taken with a undriven 70 mm Pronto Refractor (480 mm focal length). Kodak Elite Chrome 200 slide film. The eclipse occured on the day of the Winter Solstice.
This eclipse had a typical solar maximum corona. It was quite a shock for me to see no equatorial streamers! Observed from Kamen Brag, Bulgaria on the Black Sea Coast. Totality lasted 2 minutes 19 seconds.
One aspect of the Partial Phase that is characteristic of a total eclipse is the central movement of the large enough moon across the sun. This is shown in the image.
The telescope used was a 70 mm refractor (Pronto), focal length 480 mm. Solar Filter used. Kodak Elite Chrome 100 slide film. 11th August 1999.
Observed from M.S. Statendam off Curaçao on 26th February 1998. Totality lasted 3 minutes 37 seconds.
Photos taken with a 480 mm focal length 70 mm refractor (Pronto), undriven. Ektachrome 400 slide film.
The Solar Corona over the twin snow capped volcanoes Pomerape and Parinacota. Observed from Lauca National Park in the extreme north of the Chilean Andes. Altitude 4200 m. Totality lasted 3 minutes 0 seconds. 3rd November 1994.
Solar prominences and the extreme inner Corona. Observed from Kona on the Big Island of Hawaii on the early morning 11th July 1991. Totality lasted 4 minutes 6 seconds. Telephoto lens set at 210 mm.