November 3, 2025 — The air was still and the moon so bright and clear tonight, we had to open up the observatory long enough to take a peek and a pic! Moon was 92% illuminated in its waxing gibbous phase, lighting the landscape around us, no flashlight required. Technical: Askar 103 APO telescope, TeleVue Powermate 2X Barlow, Canon EOS 5D Mk. 4 DSLR, single exposure.
October 20, 2025 — So how well does the Meade LXD75 6-inch achromat fit under the dome? Actually, pretty well! Shooting the sun this afternoon was (outside of seeing conditions) not bad. The scope is about four feet in length, not counting imaging and observing add-ons, and the objective end swings well inside the dome. Access to the eyepiece and camera was good. Not much room to get past the visual end, however, so we’ll see! Main thing is, it fits. Pretty much.
October 3, 2025 — We had been having quit a lot of trouble lately, recording data and reproducing images of Sun with prominences. There was some early success but even those images were a struggle to produce. Taking a look at suggested camera settings found in an article on solar imaging, one thing stood out — gain! We had nudged the camera’s gain setting upward and that’s not helpful and certainly not recommended; the setting should be very low or even zero! A few adjustments in data capture parameters was all it took to make a big difference in image processing and results!
We’re very pleased with Barlow-boosted views, shown here, though we’re still having some issues with achieving even lighting across whole-disk views — just can’t seem to get them tuned right with the Coronado SolarMax III. Visual observing was also very good, especially with the TeleVue 10mm eyepiece. October 3 conditions: Clear sky, temperature of 74°F, light southeast wind.
Note: The observatory construction is essentially complete with only a few “touch up” items and further outfitting remaining. We’ll eventually get around to writing and illustrating the story of the project. First, though, the 2025 International Observe the Moon Night….
October 4 marked International Observe the Moon Night (IOMN), an event billed as an opportunity to “unite people across the globe in a celebration of lunar observation, science, and exploration.” Coordinated and promoted by NASA, IOMN boasted 1,045 registered events worldwide. That count does not include informal events and individuals who, on their own, observed Earth’s Moon, encouraged by the promotion. Unfortunately, due to a U.S. government shutdown, NASA staff are unable to update the IOMN website and we may never know how it went this year.
While we did not host an outreach event, we did post fresh, new telescopic images depicting lunar details, along with descriptions of those events as our participation. This year, we concentrated our efforts on the Threads social media platform. What follows is what we posted.
Crater Plato is about 63 miles in diameter and about 3.84 billion years old. Once again, see how the western rims of the craters along the terminator shine in the low-angle light from the rising Sun.
We hope you have enjoyed what you have seen and will see online tonight, or were fortunate to attend an International Observe the Moon Night event in person. Outdoors, at home, online, or wherever you may be, we’re glad to have had you with us. We hope IOMN has united people across the globe in a celebration of lunar observation, science, and exploration, under one sky, appreciating one Moon. Goodnight, and keep looking up!
The big Saia freight truck pulled up in front in the early afternoon July 10. The ready-to-assemble (RTA) observatory had arrived on two pallets weighing about 625 pounds each. After struggles getting it off the truck, aided by its very helpful driver, and with unexpected help from a neighbor, we stowed the base wall components in the garage. I moved the dome halves myself to a patio space adjacent to the observatory site where they are to be assembled.
Withering hot weather and a severe summer cold (ironic?) halted progress on the observatory dome assembly for several days. This afternoon, July 14, hoping to dive into the work tomorrow morning, I set up a canopy for sun protection. The portable shade along with a good electric fan ought to help extend the day’s work time until I can’t stand the heat!
At long last, here we go!
It has been a long, and bumpy road but, at long last, our SkyShed POD-S observatory structure is arriving! Delivery is set for tomorrow, July 10, via freight truck. Wrangling the large and heavy parts of the RTA (ready-to-assemble) building from street to site will be challenging but I think / I hope I can manage it. One looming problem: once put together, hoisting the assembled dome to rest upon the round base wall is a task that I’m uncertain how we’ll accomplish — the thing will weigh 350 pounds! I’ll need several strong people to help lift the dome but don’t know where they’ll come from.
In the mean time, I’ve assembled a collection of tools and materials required for the assembly, the building permit is in place, and so we forge ahead.
White light allows viewing Sun as if we could stare directly at it without the resulting blindness. The Herschel wedge does much the same thing but with, perhaps, a bit more contrast and detail. Both of those white light views allow us to see a layer of the solar atmosphere called the photosphere. In the photosphere the most apparent details are sunspots, standing black against a white background. With enough resolution we can also see granulation — enormous convective bubbles of searing solar plasma.
One layer above the photosphere — yes, above — is the chromosphere. Shining in the wavelength of hydrogen-alpha (Ha), the chromosphere is not visible to us without light filters that exclude all light but Ha. A wholly different view of our Sun is available in that wavelength. Swirling seas of plasma form curves and hash as they are moved by magnetic fields, long filaments float over those seas, as fountains of glowing gas arc from the solar disk contrasted against the blackness of space. On closer examination, the solar limb appears rough, a bit like a fine-toothed saw blade, as innumerable spicules, jets of glowing gas, are seen in contrast. Yes, sunspots are visible but are no longer the primary interest.
After many tries and failures at processing images to best show the chromosphere complete with prominences, I finally learned what some other imagers were using to process their images: Solar Toolbox — a package of programming scripts used with the PixInsight imaging application. I still have much to learn about Toolbox but it has already been enormously helpful to me in the challenging world of solar imaging! Thus, the image above is from very good data recorded about seven months ago, now reprocessed using Toolbox.
Monday dawned clear and bright so we set up the hydrogen-alpha (Ha) solar telescope and recorded some image sequences. Today was a dull and cloudy day so we spent some time learning new processing techniques for our solar imaging and were rewarded with our best shot yet. The processing of choice was Solar Toolbox — a script package developed for use in PixInsight software — just the set of tools we were looking for! We’ve a long way to go but we think this picture shows great progress!
Following the evaporation of our first observatory deal we revisited our pre-purchase research from two years ago. We quickly settled upon the SkyShed Observatories POD-S Mark IV in this project reset. Today we placed our order and paid for the ready-to-assemble kit.
While we were originally hoping for fiberglass construction, the POD-S is built from double-walled polyethylene — much the same as plastic garden sheds. The material actually provides some advantages over other construction but presents an interesting issue: daytime IR heating. It seems white poly is translucent to infrared light (solar heat rays) which causes the interior to heat up. We chose a light gray color which, while not the classic choice for a dome or observatory, we are told will allow less of interior heating, as it blocks more IR than the white color reflects. This flies in the face of the usual reflective white or metallic silver specified for observatories but those buildings aren’t made of polyethylene.
We don’t have production or delivery schedule information at this time (the order’s brand-new) but there are other things to do such as acquiring a new building permit, pulling electrical wire to the telescope pier site, building a warm/control room in a nearby shed.
The bad news is that the deal we made for an observatory building is dead after two years of waiting. We received the news via email this morning. The final straw was that the manufacturer was unable –due to factors outside of his control– to ship the finished package! At a financial loss due to packaging costs, he canceled the deal and will issue a refund. The problem was so bad for him, he’s leaving the US market entirely!
The good news is that we have selected a product we had researched two years ago, along with our original choice. Ironically, we originally bypassed this manufacturer because it was going to be two years before their product could be shipped. Now they ship in 6 to 8 weeks!
We’ll post pictures and identify the new choice once we’ve closed that deal. We’re actually feeling pretty good about this. Except for the time lost not having an observatory.
Stella-Luna Observatory 