Solar System

THE SOLAR DISK IN H-ALPHA LIGHT : see also time-lapse animations

SSIm on Coronado SM II 90 @ f/8.8 3 stacks of 6 x 1ms frames, 2014 Video Star Party, Johnstown, Ontario, Canada, August 1st, 2014 ... reprocessed in April 2022

The above sequence spans ~6 hours and includes the inflation and collapse of a major plage complex that appears to correlate with a major chromospheric excursion recorded that day

SSIm on Coronado SM II 90 @ f/8.8 : stack of 5 x 1ms frames, 2015 Video Star Party, Johnstown, Ontario, Canada - July 11th, 2015 ... reprocessed in April 2022

Active spiral magnetic field around a well defined sunspot ... plus crop + zoom

SSIm on Coronado SM II 90 @ f/8.8, April 17th, 2022

SSIm on Coronado SM II 90 @ f/8.8, April 20th, 2022 ... this sequence clearly shows the evolution of a large sunspot group 6 hours prior to a Class-X solar flare that occurred just after sunset in my backyard. Note inset of Earth added for scale.

SSIm on Coronado SM II 90 @ f/8.8, April 20th, 2022 ... filaments linking between the left and right groups of sunspots - I have never observed this before ! Note inset of Earth added for scale.

SSIm on Coronado SM II 90 @ f/8.8, May 25th, 2022 ... lots of swirly texture associated with filaments Note inset of Earth added for scale.

DS287m on Coronado SM II 90 @ f/4.4, May 31th, 2022 ... lots of delicate detail in filaments

SSIm on Coronado SM II 90 @ f/8.8, June 19th, 2022 ... Note inset of Earth added for scale

SSIm on Coronado SM II 90 @ f/8.8, June 19th, 2022 ... detail of filament from preceding image

SSIm on Coronado SM II 90 @ f/8.8, June 19th, 2022 ... Note inset of Earth added for scale

SSIm on Coronado SM II 90 @ f/8.8, June 19th, 2022 ... detail of sunspot group and bridging filaments from preceding image

DS287m on Coronado Solar Max II 90 @ f/4.4, July 9th, 2022

SSIm on Coronado Solar Max II 90 @ f/8.8, July 9th, 2022 ... 3 detailed images of the solar disk. Note Earth inset for scale.

DS287m on Coronado Solar Max II 90 @ f/4.4, September 10th, 2022

SSIm on Coronado Solar Max II 90 @ f/8.8, September 10th, 2022 ... Note Earth inset for scale

SSIm on Coronado Solar Max II 90 @ f/8.8, September 29th, 2022 ... Note Earth inset for scale

SSIm on Coronado Solar Max II 90 @ f/8.8, September 29th, 2022

DS287m on Coronado Solar Max II 90 @ f/4.4, October 2nd, 2022

SSIm on Coronado Solar Max II 90 @ f/8.8, October 2nd, 2022

SOLAR PROMINENCES IN H-ALPHA LIGHT

SSIm on Coronado SM II 90 @ f/8.8, August 1st, 2014 ... reprocessed in April 2022

SSIm on 6" SCT @ f/10, April 6th 2014 ... H-Alpha using 1000 Oaks system - "Cathedral Arch" prominence in upper chromosphere ... reprocessed in April 2022

SSIm on Coronado SM II 90 @ f/8.8, April 30th, 2022 ... Earth inset for scale

SSIm on Coronado SM II 90 @ f/8.8, May 8th, 2022 ... Earth inset for scale

SSIm on Coronado SM II 90 @ f/8.8, May 14th, 2022 ... Earth inset for scale

SSIm on Coronado SM II 90 @ f/8.8, June 19th, 2022 ... Earth inset for scale

SUN IN WHITE LIGHT

SSIm on 6" SCT @ f/10 : single 1ms frame ... I forget the details for the second image !

Sunspot groups, granulation. faculae and limb darkening

Kitchen colander used as a multi-pinhole camera : solar eclipse, August 2017.
Sun Ring : April 2018

MOON

SSIm on 120mm refractor @ f/7.5, unless otherwise indicated

Sky Raider DS10cTEC on 8 inch SCT @ f/5 + UHC filter : single 1.9 millisecond frame, unbinned, high conversion gain, no darks or flats, February 18th 2019