Eclipse HDR and Earthshine

My eclipse photography plan during totality was to take a sequence of images with exposures tailored to see both the bright prominences and the faint outer corona, so my exposures were a set of 5 images every 5 seconds at ISO 200, f/7 (on my EdgeHD C8 with my Canon 6D and a 0.7x focal reducer) with exposures of 1/500 sec, 1/125 sec, 1/30 sec, 1/8 sec, and 1/2 second.  I used the same exposures on my Canon 70D with my 70-200mm lens at f/8.  Here are the result of some HDR combines using Picturenaut and then some touchup with the GIMP.

This is an HDR combine of 5 images taken with my Canon 6D attached to my Celestron EdgeHD C8 using a 0.7x focal reducer.

This is the same image as above but with some contrast stretching to bring out the Earthshine on the Moon.  I was hoping I'd be able to see it in the longest exposure of the sequence.

This HDR combine was obtained with my Canon 70D attached to my 70-200mm lens at 200mm focal length.  The exposures were made at ISO 200, f/8, and 1/500 seconds, 1/125 sec, 1/30 sec, 1/8 sec, and 1/2 sec.  You can see the dark blue sky along with the bright star Regulus to the left of the Eclipsed Sun.

This image is the same as the previous one but with some contrast stretching of the Earthshine on the dark face of the Moon.

Mount St. Helens

After seeing the August 21, 2017 Total Solar Eclipse, we headed for Mount St. Helens, the volcano in southwestern Washington that produced the largest volcanic eruption of the 20th century and the largest landslide recorded in history on May 18, 1980.  The eruption killed 57 victims as the north side of the mountain collapsed and blew out.  The landslide devistated a huge area mostly north of the volcano and an ash cloud rose to more than 7 miles, covering a huge area to the northeast of the mountain as the volcano lost 1313 feet from it's height.  The appearance of the formerly symmetric volcano was changed in minutes to a large horseshoe shape and over the next 6 years, a volcanic dome grew inside the crater atop the volcano.  Activity is greatly reduced but continues off and on, adding to the volcanic dome complex near the summit.

This photo shows Mount St. Helens from the north as viewed from the Johnston Ridge Observatory.  This location used to be called Coldwater ridge but was renamed after the May 18, 1980 eruption after the USGS geologist David Johnston who was killed during the eruption while manning some measuring equipment near this location.  His body was never found so he is almost certainly still very nearby.  It was a bit of an eerie feeling standing near Johnston's final resting place.  Johnston was one of the faces of Mount St. Helens during the nearly 2 months of volcanic activity around the mountain prior to the catastrophic eruption of May 18.

Spirit Lake was inundated by the landslide debris, sloshing water 800 feet up the slope of the hills to its north and burying the many cabins around the lake including the octogenerian Harry Truman who refused to leave the area despite the warnings of impending eruption under as much as 600 feet of debris.

This closeup of the summit of Mount St. Helens is the first of 3 images showing the horseshoe shaped summit left over from the eruption.  The clouds surround the summit area, especially the lava dome which grew after the eruption.

This second image shows the lava dome a little better. You can see a vertical column of steam rising from the vent.

Here is a closer view of the lava dome and the steam vent on its summit.

As we drove out of the park, we watched a pretty sunset over the mountain.

The magic hour around sunset produces some spectacular lighting and this day was no exception to that.

Wide field Total Eclipse shots

The following images were taken midway through totality using my Canon 70D with my 70-200mm lens.  The images used a 2 stop bracket with mid exposure of 1/30 seconds at f/8, ISO 200 and 5 total shots.  The images were taken in just over 1 second and I took a set every 5 seconds.  You can see prominences in the first image and increasing corona details as the exposures increase.  The final image also shows Regulus to the left of the Sun/Moon.

2017 August 21 total eclipse - the sunspot groups.

These images show the sunspot groups that were visible on the face of the Sun during the partial phase of the 2017 August 21 total eclipse.

The first image was taken on August 20, 2017, the day before the total solar eclipse with my Canon 70D attached to my 8 inch EdgeHD telescope.  The two sunspot groups include the group near center and another group coming around the east side of the Sun.  The exposure was 1/1000 seconds at ISO 200, f/10.

This image was taken after the end of the total solar eclipse on August 21, 2017.  It shows the two sunspot groups visible during the eclipse.  The image was taken with my Canon 70D attached to my 8 inch EdgeHD telescope with an exposure of 1/1000 seconds at ISO 200, f/10.

This is a closeup of the central sunspot group cropped from the above image with a little sharpening and brightness stretching to enhance the appearance a little.

This is a closeup of the sunspot group on the eastern limb of the Sun, just a couple days from making its initial appearance on the eastern limb.  I cropped this from the above image and applied a little sharpening and brightness stretching to enhance the appearance a little.

August 21, 2017 total eclipse - the diamond ring

This image was taken at the end of the total phase of the 2017 August 21 total solar eclipse just as the Sun reappeared on the west side of the Moon.  This image was taken with my 8 inch EdgeHD Celestron telescope with my Canon 6D attached via a 0.7x focal reducer.  The exposure was 1/500 seconds at ISO 200.

Total Eclipse, 2017 August 21 - West side prominences.

This image was taken just before the photosphere reappeared on the west side of the Sun at the end of the total phase of the 2017 August 21 total eclipse.  This image was taken with my Canon 6D attached to my 8 inch EdgeHD telescope with a 0.7x focal reducer with an exposure of 1/500 seconds at ISO 200.

August 21, 2017 total eclipse

During the total solar eclipse on 2017 August 21, I shot a sequence of 5 exposures, each 2 stops from its neighbor, in order to get reasonable exposures on prominences on the bright end the solar corona on the fainter end.  In this case, I used my Canon 6D with a 0.7x focal reducer on my f/10 Celestron EdgeHD 8 inch telescope with exposures of 1/500 sec, 1/125 sec, 1/30 sec, 1/8 sec, and 1/2 seconds going down the images below.  These images were taken early in the eclipse so that the Sun's photosphere is just covered by the Moon on the east (left) side while the west (right) side is well covered by the Moon.

Eclipse photography practice.

The August 21st Solar Eclipse is just 16 days away so it's time to practice some setup and photography of the Sun.  In this case, I used my Canon 6D with its full frame sensor on my Celestron EdgeHD 8 inch telescope and a white light solar filter.  For the eclipse, I'll use a 0.7x focal reducer to get a bigger field of view for the phenomena around the Sun and Moon.

This is the full image with some sharpening and contrast stretching.  The C8 is an f/10 telescope with 2032mm focal length.  You an see some sunspots a little left and below the center of the Sun.  You can also see lots of granulation on the Sun in general and I was hoping to see a little more activity.  The eclipse is on August 21st, 16 days after this image, so given that the synodic rotation period of the Sun is about 27 days, this sunspot group will be on the other side of the Sun, at least a few days from coming around the edge.  This exposure was 1/1000 seconds at ISO 200 using my Canon 6D.

This is a closeup of the image above to get a better look at the small sunspot group.  You can see at least three sunspots in the group and maybe a couple more small ones if you use your imagination a little.  The Sun was getting a bit low in the sky, so there is some atmospheric color dispersion - the top of the spot looks a little red while the bottom looks a little blue.

Monsoon Storm from Kitt Peak

Last night while between local storms on Kitt Peak, I watched some storms around the area.  This one to the northwest of Kitt Peak was quite pretty and spectacular at the same time.  I took a series of five exposures in an HDR sequence and this is the middle exposure at ISO 400, f/8, 1/400 seconds at a focal length of 17mm on my Canon 70D.

This is a combination of 5 frames from 1/1000 second to 1/160 second exposures which shows the range of activity from the rays from the sun behind the clouds to the mountains and valley in the foreground.  Note the area in between the anvil and the local mountains which is covered in water from rainfall in that area.

Summer Milky Way from Kitt Peak

The Summer Milky Way sets over the little Tohono O'Odham town of Sells as viewed from Kitt Peak.  The exposure was made with my Canon 70D using a 17-70mm Sigma lens at 17mm focal length with an exposure of 30 seconds at f/2.8, ISO 1600.

International Space Station and the Milky Way in twilight

While taking a timelapse of the summer Milky Way my sequence caught the International Space Station flying over in the morning twilight.  Some clouds are moving in from the left and the Milky Way with the Tea Kettle of Sagittarius at the bottom, just about to set.  The Tohono O'Odham town of Sells is just below the Milky Way in this view from the 90 inch Bok Telescope's Bok Walk on Kitt Peak.  This image was taken with my 17-70mm Sigma lens at 17mm focal length and an exposure of 30 seconds at f/2.8, ISO 1600.

The Crescent Moon

Last Saturday night I set up my Celestron 8 inch EdgeHD telescope in my back yard.  I attached my Canon 70D with a 0.7x focal reducer (so I could fit the entire Moon on my APS-C sensor) and took some photos of the Moon.  Here are a couple, processed somewhat.

This first image used an exposure of 1/50 seconds at ISO 400.  I used an unsharp mask to sharpen the image.

This image was obtained with an exposure of 1 second at ISO 400.  Along with an unsharp mask, I stretched the image quite a bit to bring out the Earth-shine lit dark side of the Moon.  You can see some mountains over the southern limb of the Moon as well as a few stars in the sky around the Moon.

A colorful Kitt Peak sunset

The view of sunset from Kitt Peak can be quite spectacular.  Of course, a pretty cloud filled sunset does not normally bode well for the nights observing program....

 This Sun Dog was visible at about the same time as the first image.

Just after sunset, this deep red glow was quite spectacular.

Downtown Tucson at night.

Exposure 1 second at f/2.8, ISO 1600, 17mm f.l.

While in downtown Tucson one evening, I couldn't help but admire this scene with the tallest building in town lit nicely by the city lights.

Exposure 1/20 second at f/2.8, ISO 1600, 17mm f.l.

A statue near the Pima County Courthouse commemorating early Tucson settlers.

Lightning from Kitt Peak

Saturday night featured some impressive lightning storms in the distance as I was preparing to observe from Kitt Peak.  Most of the lightning storms were probably at least 30 miles away.  Here are a few of my favorite shots from the evening.

Here is the storm around sunset when it was south of Tucson.  You can see precipitation and there was plenty of lightning.  Lightning is hard to capture with short daytime exposures and the only bolt I got before sunset is blurred by camera motion.....  This image was taken with my 18-250mm telephoto at 18mm focal length on my Canon 70D with an exposure of 1/15 seconds at f/8, ISO 100.

These 2 shots are looking southeast past the McMath Solar Telescope with the Spacewatch 1.8-meter telescope dome at the far right.  The images were taken with my 18-250mm lens at 18mm focal length with an exposure of 15 seconds at f/5.6, ISO 1600.

This final image is looking back towards Tucson where the storm moved over the western half of the city.  This bolt is hitting near Ajo Road just right (southeast) of Cat Mountain and there is lots of rain falling left (north) of the lightning strike.  This image was taken with my 18-250mm lens at 87mm focal length and an exposure of 25 seconds at f/8, ISO 1600.

Tonights Moon

I set up my Celestron 8 inch EdgeHD today on the off chance I might be able to see the Falcon 9 Jason 3 launch from Vandenberg this morning.  I didn't (except for the live feed on the web) but I did test out my 0.7x focal reducer on the Sun (with solar filter) and then after the Moon rose a bit later, I slewed over to take a look at it.  The first photo below is from about sunset while the 2nd one was taken earlier in the afternoon with the image in bright blue daylight.

This image was taken with an 8 inch f/10 EdgeHD telescope with my Canon 70D with an exposure of 1/200 seconds at ISO 400.  I applied an unsharp mask to sharpen the image a bit. 

This image was taken earlier in the day in bright blue skies with the same setup and an exposure of 1/1600 seconds at ISO 400 with similar use of an unsharp mask.  Seeing was less steady.

Bandon LIghthouse

In the Summer of 2014, we visited Oregon, doing volcanoes southbound and then up the coast visiting lighthouses.  This is the Bandon Lighthouse on the south side of the Coquille River.  I was born across the river in Bandon and spent the first 8 years of my life enjoying this lighthouse and the beach south of the South Jetty across the river here.  This image was taken with my Canon 20D using my Sigma 18-250mm zoom.

Here is the same image but converted to black and white.

Kitt Peak covered in Snow and clouds.

Not a good night for observing on Kitt Peak.  The Steward Observatory 90 inch Bok Telescope is just visible through the summit level clouds as the Sun sets on the western horizon.  This image was taken with my Galaxy Note 4 camera on Friday night, January 8th.

The view of the setting sun through a layer of clouds on Kitt Peak on Friday night, January 8th taken with my Galaxy Note 4 camera.  The moutnaintop was covered in snow.