Information on Spaceweather.com states its over 370,000 km long…Wow! The monochrome image is just 20 single images stacked in RegiStax6; it shows the delicate prominences in much more detail than the colour images…
My photos were taken with a Lunt 60mm solar telescope and a Canon 700D with a 2x Barlow lens attached. Two sets of images were captured at different exposures and stacked in RegiStax6 and combined in PS. I used the monochrome setting in the camera for the black and white image.