The Eclipse Ends
Category: Astrophotography
Peering into the dark with a camera
Eclipse Prominences
Witnessing a Total Solar Eclipse
By the time this is posted, by the time you read this, the eclipse will be long over. You will have been flooded by images and descriptions of this event from thousands of sources. However, this blog is a personal diary, I will put down my thoughts and memories before they grow dim, post my photos, and preserve the experience for myself.
Our plan was simple, camp out well ahead of time in a site that had been carefully selected and scouted. Jody and Larry camped along side this little pretty meadow earlier in the summer, noting that it would serve quite well. They also arrived first, five days before the eclipse, and minutes ahead of others that sought this same place.
The plan worked, and worked well. In the days leading up to the eclipse dozens of vehicles came past, each looking with envy at those who had arrived early to claim the best spots. The stream of vehicles continued late into Sunday eve, no matter, this forest offers room for all.
Processing the Eclipse
Processing the frames to produce a deeper view of the solar corona is not easy. This is the best I have achieved so far. You can still see some ring like artifacts where the layers have been merged. I will be working further to improve this, but it may come down to retouching by hand to eliminate the issues.
The image is an HDR merge of five images taken from 1/500 to 1/4sec exposures with the TV-76 and a Canon EOS M5. Extensive corona and a couple prominences can be seen.
Totality Achieved
Just a photo downloaded from the camera and minimally processed on the iPad…
Solar
Will be doing a little solar observing in the coming days…
Correcting a Baader Solar Film Solar Image
Take a photo with a thin film solar filter and you get a blue-white image of the Sun. Correcting this to a yellow gold image is fairly simple in most any photo processing package.
Color is a fluid subject, simply our interpretation of frequency across a very small slice of the electromagnetic spectrum. As such there is no absolute right and wrong, just a set of conventions we normally use.
The issue is that people expect the Sun to be yellow-gold. Present an image of the Sun in any other hue and it is rejected as fake, or false color. We are accustomed to certain visual cues to identify and interpret our world, color is a major part of that. Unless you want to argue with a million people or two, you are better off making your Sun photos yellow-gold.
Continue reading “Correcting a Baader Solar Film Solar Image”
Two Solar Film Filters
When travelling to an eclipse, one solar filter is not enough. I need a backup!
Having the two filters available for use mean I must choose between them when the moment is critical. Which is better? Some testing is in order to find out.
The two filters appear very different, the thin silver film of the Baader quite different than the thicker black polymer film of the Orion filter. Both filters are safe to use and provide decent solar viewing. Both provided pleasing solar images using my Televue 76mm APO telescope at low and medium power.
Stepping beyond basic use I do find that they perform quite differently. So differently I felt some notes are in order.
Telescope Moonrise
A tricky shot, taking very precise timing and navigation. I can not claim credit, Sean Goebel did the planning. I just supplied scouting information and came along for the ride.
Given that this only involved a fifteen minute drive from the house for me… Why not? Give it a try. Besides, I already had a suitable telescope loaded in the vehicle.
Sun!
