September 8 meeting: Buying & Selling Equipment

The September meeting of the Cuyahoga Astronomical Association (CAA) will take place September 8, beginning at 7:30 PM, at the Rocky River Nature Center of the Cleveland Metroparks. CAA member Trevor Braun will present the night’s program, “Buying/Selling Used Astronomical Equipment.” Club business will also be conducted.

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Almost Full Moon

Photo: Earth's Moon, August 7, 2014. Photo by David Watkins.

Almost Full Moon

by Dave Watkins

I was playing around with stills, videos, and some different cameras last night (August 7).

This was 1080P video mode from my Canon EOS 5D Mark II camera and Celestron EdgeHD 8-inch using prime (focus), T-adapter (with one section removed), at ISO 200. I shot about five minutes of video which came out to over 10,000 frames.

I used PIPP (Planetary Imaging PreProcessor) to find and sort the sharpest 1,200 frames. Then I used AutoStakkert! to use the sharpest 30 percent to stack.

The Moon filled up so much of the frame that I had to remove part of my T-adapter to slightly shrink the image on my 5D MarkII.

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Cloudy convention, warm inside

by William Murmann, CAA President

In spite of 100 percent cloud cover, thunder, and intermittent downpours, everyone seemed to have a good time Saturday (July 26) at our Annual Convention at Letha House.

About 39 guests attended the event, which included members, several spouses, and about 10 guests from the Black River, Chagrin Valley, and Mahoning Valley astronomy clubs.

We had a lot of good food.  Thanks to VP Tim Campbell, who brought the usual supply of discount-priced brats, wieners, and sausages — thanks to Five-Star Meats for their generous support.  Many thanks to Rich Whisler, who did all the grilling while being protected from the rain by Paul Leopold, Tim Campbell, and Marianne, who held umbrellas.

Many thanks to all those who brought yummy side dishes and desserts for the potluck supper.  We had a great selection of food, ranging from brats and potato salad to pizza, fried chicken, watermelon, and cupcakes and pies, etc.

A special thank you to Gail Korylak who set up the food line and who with her husband Steve did most of the clean-up when it was time to leave.  Gail and Steve have been a big help with our conventions for years.

Thanks also to Mike Williams and Jay Reynolds.  Mike gave an interesting presentation about star charts.  Jay discussed our observatory and gave lessons on the proper way to open and close its roof.

Special thanks to our Secretary Steve Gallant for all the work he did for months soliciting and collecting door prizes for our annual raffle. Thanks to Steve and our generous donors, we had a nice selection of prizes this year.

And speaking of door prizes, a big thank you to CAA member Joe Golias, owner of Astrozap, who donated $200 in gift certificates for this year’s event.

Finally, thanks to our Treasurer Suzie Dills, who did a ton of work signing people  in, selling raffle tickets, making change, and keeping track of all the financial stuff.  Suzie tells me that after paying for expenses the club made money on this year’s convention and raffle.

Thanks to all!  Apologies if I missed anyone.  Next year’s convention will be on Saturday, August 15,  2015.  Hopefully, we’ll have better weather!

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CAA Annual Convention coming July 26

by William Murmann, CAA President

Our officers and board extend a cordial invitation to our club’s Annual Convention at Letha House this coming Saturday, July 26.

  1. Registration will start at 2 PM
  2. At 3 PM, CAA Past President Mike Williams will be giving a presentation about star charts.
  3. After Mike’s presentation, our Observatory Director Jay Reynolds will offer training instructions on the proper way to open and close our observatory roof and on using our observatory telescopes.
  4. At about 5 PM, we will have our Potluck Supper. The club will provide grilled hot dogs, brats, and sausages–plus buns, lemonade, cups, paper plates and napkins, utensils, and condiments, etc. If you plan on participating in the potluck, please bring a covered dish or dessert that can be shared with a group.
  5. After supper, we will have a raffle of items donated by astronomy equipment vendors.
  6. After the raffle, we’ll have time for socializing and setting up equipment, etc. before our star party.

Letha House is an enclosed, air-conditioned shelter that has drinking fountains and two modern, indoor restrooms. We have an all-day and night reservation for the shelter and grounds.

Hope to see you there!

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Hubble Ultra Deep Field updated … with ultraviolet

Photo: Hubble Ultra Deep Field 2014

The Hubble Ultra Deep Field 2014 image is a composite of separate exposures taken from 2003 to 2012 with Hubble’s Advanced Camera for Surveys and Wide Field Camera 3. Image Credit: NASA, ESA, H. Teplitz and M. Rafelski (IPAC/Caltech), A. Koekemoer (STScI), R. Windhorst (Arizona State University), and Z. Levay (STScI)

Astronomers using the Hubble Space Telescope have captured the most comprehensive picture ever assembled of the evolving Universe — and one of the most colorful. The study is called the Ultraviolet Coverage of the Hubble Ultra Deep Field (UVUDF) project.

Prior to this survey, astronomers were in a curious position. They knew a lot about star formation occurring in nearby galaxies thanks to UV telescope facilities such as NASA’s Galex observatory, which operated from 2003 to 2013. And, thanks to Hubble’s near-infrared and visible capability, they had also studied star birth in the most distant galaxies. We see these distant galaxies in their most primitive stages due to the vast amount of time it takes their light to reach us.

However, between five and 10 billion light-years away from us — corresponding to a time period when most of the stars in the Universe were born — there was a lack of the data needed to fully understand star formation. The hottest, most massive and youngest stars, which emit light in the ultraviolet, were often neglected as subjects of direct observation, leaving a significant gap in our knowledge of the cosmic timeline.

The addition of ultraviolet data to the Hubble Ultra Deep Field using Hubble’s Wide Field Camera 3 gives astronomers access to direct observations of regions of unobscured star formation and may help us to fully understand how stars formed. By observing at these wavelengths, researchers get a direct look at which galaxies are forming stars and, just as importantly, where the stars are forming. This enables astronomers to understand how galaxies like the Milky Way grew in size from small collections of very hot stars to the massive structures they are today.

The patch of sky in this image has been previously studied by astronomers in a series of visible and near-infrared exposures taken from 2004 to 2009: the Hubble Ultra Deep Field. Now, with the addition of ultraviolet light, they have combined the full range of colors available to Hubble, stretching all the way from ultraviolet to near-infrared light. The resulting image, made from 841 orbits of telescope viewing time, contains approximately 10,000 galaxies, extending back to within a few hundred million years of the Big Bang.

Since the Earth’s atmosphere filters most ultraviolet light, this work can only be accomplished with a space-based telescope like Hubble. Ultraviolet surveys like this are incredibly important in planning for the James Webb Space Telescope (JWST) as Hubble is the only telescope currently able to obtain the ultraviolet data that researchers will need to combine with infrared data from JWST.

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Observatory improvements stellar

by William Murmann, CAA President

Observatory Director Jay Reynolds recently reported the good news about our Letha House Park observatory.

Jay told me that he and Bruce Lane went out last week and made the final adjustments on our 16-inch Meade.  This scope and the recently donated 8-inch Celestron are now fully operational and user-friendly.

When I became club president nearly four years ago, one of my goals was to get our observatory up and running so it would be an asset to our club.

For years, our observatory sat largely unused.  It was full of mice, dead bugs, and spider webs.  Parts of it were literally rotting away.  During the past two years, this has all changed.

I contacted the Medina Park District’s executive director and asked for help getting our building repaired.  He graciously agreed to help, although he didn’t have to because the building belongs to the club and we are responsible for its maintenance.

The park staff replaced the building’s rotting south wall, fixed the leaky roof, and replaced the rotting door frame and door.

We paid for materials; the park district staff donated the labor free of charge.  And, recently, the park maintenance staff restored the fold-down sections of the south wall at my request.  All the labor and materials for this job were donated to us free of charge.

And last month, we installed a new door lock on the advice of the park district’s locksmith, who warned me that the old lock was about worn out and could simply stop working.

The park district, under its current executive director Tom James, has been very supportive of our club. We owe them our thanks, and thanks to the park district’s maintenance supervisor Rick Perry for the excellent work he and his staff have done in repairing our observatory.

Jay Reynolds, who I appointed last year as our observatory director,  has played a key role in restoring our observatory.  He has spent hours and hours cleaning and organizing the building, getting rid of junk, installing the 8-inch Celestron that was donated to our club, and repairing and mounting our 16-inch Meade in a new spot on the old Byers mount that had sat basically unused for years.

Jay, with help from Suzie Dills and others, has made all the difference in giving us a “new” observatory.  Many thanks to all.

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Lake Hope and The Milky Way

The Milky Way and galactic center by Alan Studt.

Milky Way by Alan Studt

by Alan Studt, CAA Member

About a year and a half ago I ran across a guy in Grand Teton National Park who photographs the night sky using beautiful landscapes as the foregrounds for his “Nightscapes.” I was hooked and wanted to learn how to do that. When I got home to cloudy Ohio I took advantage of the rare clear nights and started learning how to go about it and also learning what it was I was seeing up there. At the time, all I really knew was the Big and Little Dippers, and that the Milky Way was our galaxy and that fuzzy streak you could see in really dark sky places.

My interest in photography has helped me learn about the constellations and other objects in the sky. I’ve shot areas of the sky not knowing what was there, then I’d study the photos and find the constellations by looking at charts. There is so much up there and I find it all fascinating.

On March 5-8 we spent some time in southern Ohio at Lake Hope State Park and also hiking around the various parks in Hocking Hills. It’s very dark out that way and we were fortunate enough to have two very clear nights and a clear early morning. Despite the very bright half-moon in the evenings you could see many things impossible to see in Parma.

I have an app on my iPod called “Star Walk” and I can see what position the stars will be in on any given date and time so I knew the Milky Way would be visible in the southeast a couple hours before sunrise. I woke up one morning around 4:15 AM, looked out the window of our cottage, and could see Cygnus very clearly. So, I packed up my stuff and headed down by the lake and got my best shots to date of the Galactic Center, and a few other nice shots as well.

Specs for the photo: Nikon D600, Nikkor AF-S 24-85mm f/3.5-4.5G ED VR, 20 seconds, f/3.5, ISO 6400. Processed in Lightroom 5.3 for Windows.

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