The monthly meeting of the Cuyahoga Astronomical Association will take place Monday, March 12, beginning at 7:30 PM. The evening’s program, “Astrophotography and other Cool Pictures,” will be presented by club members Alan and Gale Studt. The couple will present photos featuring starry night landscapes, panoramas, and star trails blended with earthly landscapes! For the technically-curious, Alan will go over his gear and basic procedures. Plus music and more!
Following the presentation and a brief social break, the club will conduct its membership business meeting.
Our monthly meetings are held on the second Monday of every month (except December) at 7:30 PM at the Rocky River Nature Center; 24000 Valley Parkway; North Olmsted, Ohio, in the Cleveland Metroparks.
This is a gallery of eclipse photographs made by members of the Cuyahoga Astronomical Association (CAA). Some members traveled to various places along the path of totality to experience the total solar eclipse. Some CAA members stayed behind, photographing the deep partial eclipse. We are fortunate to have a number of talented photographers and astrophotographers as members and pleased to be able to exhibit their amazing work here. We will add new images to this post as they are received so check back on occasion! Please note: these images are the property of their individual creators and may not be used without the photographer’s expressed permission.
The Cuyahoga Astronomical Association has a number of members interested in and skilled at astrophotography – an activity that is both similar to and different from traditional terrestrial photography. One of our skilled practitioners is Joe Golias, owner of Astrozap.com – local maker and seller of telescope accessories. Golias was in attendance at a winter star party in Florida when he made the remarkable image seen above.
“Conditions were pretty good throughout the week with the exception of one strong storm that hit mid week,” Golias wrote. “Otherwise is was clear, calm and warm most of the time. This was not my intended target but had some issues with a dead battery the first night in my mount which killed my go to capabilities. I had to pick an object that I could easily see through my spotting scope and just decided to concentrate on this object the rest of the week.”
Object: IC 434 & B33 – The Horsehead Nebula Acquisition Data: The Florida Keys, February 2017 Telescope: Takahashi FSQ-106EDX IV @ f/5.0 Mount: Losmandy G-11 Camera: SBIG STT8300 with self-guiding filter wheel. Exposure time: 12 Hours using the following filters. HA, Red, Blue & Green. Processing Software: Images Plus and Photoshop 7.0.
CAA member and eclipse chaser Steve Korylak followed the Sun to Indonesia for the March 9 total solar eclipse. He viewed and photographed the event from the deck of a ship positioned for an optimal view of totality. Here are his photographs and his story….
“Not bad for being on a moving ship! The eclipse lasted two minutes, forty seconds; I planned to photograph for one minute, look at the sun visually for one minute and take a movie for the last 40 seconds. I had rehearsed this the day before so I would be prepared. Timing the interval between shots so I did not overload the camera buffer. I had a solar filter on the lens to record the partial phases. Near totality, I looked for shadow bands on the side of the white ship and did not see them. When I took off the filter the focus changed, even though I had it taped so it would not move; this caused me to miss the diamond ring and bailey’s beads. I had to refocus — still slightly off — and started taking pictures. Then the eclipse was over; no visual, no movie. Learning experience!”
Photo Info: Inner corona – Nikon D1500 (APS-size sensor) 1/4000 sec., f/11, ISO 1000, 300mm lens with 2X teleconverter. Outer corona – same hardware, 1/60 sec., f/11, ISO 1000. The lens was f/5.6 but with the teleconverter it is equivalent to f/11. shot in raw mode for maximum detail.
Changing a word from an old Police lyric, there’s a big black spot on the Sun today. Sunspot AR2529 is the dominant feature on an otherwise quiet star. Visible to the unaided eye through solar-safe filters, the sunspot is several Earth-diameters across and roughly “heart” shaped! This image was recorded Wednesday, April 13, at 2:19 PM. The bright orange color resulted from use of a solar filter covering the camera lens.
Here is what SpaceWeather.com says about the sunspot: “Since it appeared less than a week ago, AR2529 has been mostly, but not completely, quiet. On April 10th it hurled a minor CME into space. That CME, along with another that occurred a few hours later, could deliver a glancing blow to Earth’s magnetic field on April 13th.” A CME is a Coronal Mass Ejection wherein the Sun flings plasma from its atmosphere out and into space. CMEs reaching Earth can cause auroras.
Photo Info: Cropped from full frame, Canon EOS M3: ISO 250, 1/1600 sec., f/8, 400mm lens. Photo by James Guilford.
The Cuyahoga Astronomical Association (CAA) has several skilled photographers amongst its membership. Taking advantage of a clear, starry night February 6, CAA member Alan Studt spent some time with his camera making this wonderful image. Creating an image as beautiful as this nighttime landscape isn’t as simple as simply pressing the shutter release, even on an advanced DSLR. Here are Alan’s notes concerning this photograph:
The image is a combination of a few shots to get the various dynamic ranges involved.
Camera – Nikon D600 with 14mm Rokinon lens, producing three shots processed in Adobe Lightroom CC, and layer blended in Adobe Photoshop CC:
Sky – ISO 1250, 15 seconds, f/2.8
Land/Lights – ISO 6400, 15 seconds, f/22
Lake/Boardwalk – ISO 1000, 15 seconds, f/2.8
Constellations and objects seen in this image include: Canis Major & Minor, Orion, Lepus, Taurus, The Pleiades, and the lower part of Gemini in the upper left corner.
An impressive train of sunspots has been making its way across the face of our nearest star this week. In the photo above: Designated AR2447 (small group to the left), AR2443 (bigger and darker, near center), and AR2445 (far right), the “Active Regions” have the potential of unleashing flares. In fact, AR2445 was the source of a flare that caused this week’s “northern lights” sighted across northern latitude locations around the world. Now rotating over the Sun’s limb, AR2445 won’t be aimed at Earth for a while — if ever again — but AR2443 has potential for high-energy flares.
Photo credit: James Guilford. Canon EOS 7D II: ISO 400, f/11, 1/1250 sec., 400mm lens with Astrozap film solar filter, heavily cropped, November 4, 2015.