EarthSky Community Photos

Submit your photo here. Comment or upvote on photo pages. Search via photographers' names. More improvements coming! To help, please donate.

William Mathe
Longs Peak, Colorado
02/11/2024
06:31 pm

Equipment Details:

Canon R5 camera body
Canon EF 100-400 L IS II + 1.4x teleconverter + EF to RF adapter
H&Y neutral densisty gradient filter
Wimberley gimblal head on a Manfrotto tripod

Post-processing Details:

Image shot in camera raw
All processing on a single image in Adobe Camera RAW
Sky and foreground processed as separate layers and recombined
RAW image saved as a TIFF and then exported as a .jpg

Image Details:

DaVinci Glow of 6.5% Waxing Moon over Longs Peak with Circumzenithal Arc

As the sun was setting I could see that the winds were howling at the top of Longs Peak (14,255 ft high). This caused a fairly large dispersed cloud of snow and ice particles to form near the summit. By the time I shot this image the winds had died down slightly but the suspended ice particles created this circumzenithal arc and due to the relative angles of the moon vs the sun vs the observer it is offset from the moon.

The parameters of the shot required bushwhacking to a location about 1000 feet off the access road at the base of Longs Peak. I needed that elevation differential from 9000ft to 14000ft to produce a 14.5deg shooting angle so I could catch the moon before the night skies became fully dark (true dark night started around 7:05pm and this was shot around 6:30pm). I was VERY fortunate to find a little clearing with a view/window between the trees just barely wide enough where I could see and shoot towards the top of LP.

It was fun tromping through the calf to knee deep powder in the dead quiet of a crisp clear early evening without another soul to be seen or heard. Fortunately there were no critters who might've had more interest in me than I in them.

Really the only challenging "technical part" of the shoot was the temps were cold enough at 9F that it took the better part of an hour for my lens to stabilize to where it would hold focus and also fortunately I always like to set up and get dialed in early enough so that it wasnt an issue.