|
||||||||
Daily Notebook
This web site is protected by copyright law.
Reusing pictures or text requires permission from the author. |
|
2026 October 13 |
The picture I meant to take the other night Last month I took a picture of star clouds in Cygnus, and due to difficulty aiming the camera (pointing nearly straight up, with no access to the viewfinder, on an iOptron SkyTracker with no computerized pointing), it showed only some ordinary star clouds. Here is what I was actually trying to get: | |
| ||
|
This is a picture I have taken many times before; I took this one to re-familiarize myself with the equipment and put the newest version of PixInsight software through its paces. Taken in town, at my home on the west side of Athens. Stack of 100 1-minute exposures, Canon 60Da at ISO 800, Sigma 105/2.8 DG EX lens at f/4, crosshairs in front of lens to add spikes to the brightest stars, iOptron SkyTracker. New tools (relative to years ago) include PixInsight 1.9.5, BlurXTerminator, MLDenoise (newest), and my new practice of taking much larger numbers of exposures to stack. What you see is downsampled by a factor of 6. The picture actually looks decent at full resolution. That means it could be printed poster size and still look sharp. |
||
|
2026 October 11 |
Song of the day: "Mere Image" Click here to hear "Mere Image" on YouTube I've written elsewhere about how Mannheim Steamroller's "Fresh Aire" albums were the soundtrack of Melody's and my marriage. Of everything on those albums, "Mere Image" was Melody's favorite. I don't know if the name is a pun on "mirror image." What I do know — and have just confirmed — is that this piece depicts progression from childhood through maturity and old age. You can hear that in it: a childlike theme, then increasing maturity, then dignity, then slowing down, then a reprise of the childhood theme. That is in the liner notes. Curiously, on line I found a commenter saying it was a variation on "Greensleeves," which it is not. It does remind me a little of "Lovely Joan," the second song in Vaughan Williams' "Fantasia on Greensleeves," but it is not that either. What I learned today is that "Mere Image" was originally performed as a ballet at Mannheim Steamroller's first concerts in Omaha, but not since. Some kind of malfunction is affecting YouTube's video embedding code, which is why I cannot show you a preview of the video above. |
|
|
2026 October 8 |
Am I now Trump's enemy? Trump has now provided Americans with a loyalty test that I am proud to fail:
Besides a loyalty test that almost no one will pass, this may also be a demonstration that even Trump's own staff don't take him seriously. At least, I have heard of no attempts to enforce this requirement. Superintelligence is already a technical term that means something else. It means artificial general intelligence that surpasses human intelligence in many or all dimensions. No such thing has been achieved or is in sight. |
|
|
2026 October 7 |
NGC 7331 with supernova On September 1, a supernova flared up in the galaxy NGC 7331, and it's still near maximum brightness (around 13th magnitude, easy to photograph, hard to see even in a big telescope). Here, NGC 7331 is the biggest galaxy in the picture, and the supernova is the star just on the lower-left edge of its bright core:
Compare to the picture of NGC 7331 I took with the same equipment last year. Stack of 240 (yes, 240) 30-second exposures. Celestron 8 EdgeHD on Losmandy GM811G mount, f/7 compressor, Altair 26C camera. |
|
|
2026 October 6 |
Some details of Melody's childhood I am not qualified to write a complete biography of the amazing Melody Mauldin Covington, but I do want to note some details that she shared with me.
|
|
|
2026 October 5 |
Flowers for Melody's birthday Over the years, I would often surprise Melody with a dozen red roses. Kroger, next to the hospital, was one of my usual places to buy them, and during her last hospitalization, as I darted in there to pick up food and saw the flower section, I made a mental note to bring her roses as soon as she got to a place that permitted flowers (the ICU didn't). Sadly, she never got out of the ICU. Today, her birthday, I bought a dozen red roses at Kroger and brought them home in honor of the occasion. It may become an annual commemoration, or I may decide that one posthumous birthday is enough. We'll see.
I also checked that the artificial red roses on her grave were in tip-top shape. They are holding up very well. We don't have real flowers there because the deer would eat them. Here also is a picture of us casting long shadows on the eve of her birthday in 2013, heading into Jason's Deli (where First Watch is now, on Alps Road) for a birthday dinner.
|
|
|
2026 October 1 |
The floor of Mare Orientale
On the evening of September 28, I managed to photograph the flat floor of Mare Orientale, which is seldom visible from earth. The non-circularity of the moon's orbit makes it swing into view occasionally. Compare my earlier success here, under even better conditions. Celestron 5 (5-inch telescope), best 25% of 4,994 video frames taken with a ToupTek 678 camera, aligned, stacked, and sharpened. Lit from the other direction Now scroll through this view of Mare Crisium and its environs. This is the region of the moon that you would see as a thin crescent in the evening, except that here, we're seeing it when the moon is slightly past full, and if you were standing on the moon in this region, the sun would be setting rather than rising. Lots of familiar details are lit from the opposite of the direction we're accustomed to looking at.
Same setup as before, best 50% of 3,821 video frames. First glimpse of Saturn
Finally, with the same setup, I got the season's first view of Saturn. This is not a very good picture; the telescope was too small; but it does show you what Saturn looks like in a small telescope. Best 800 out of 2,387 video frames. |
|
|
|
||
|
This is a private web page,
not hosted or sponsored by the University of Georgia. Portrait at top of page by Marco Ramos. This web site has never collected personal information and is not affected by GDPR. Google Ads may use cookies to manage the rotation of ads, but those cookies are not made available to Covington Innovations. No personal information is collected or stored by Covington Innovations, and never has been. This web site is based and served entirely in the United States.
In compliance with U.S. FTC guidelines,
I am glad to point out that unless explicitly
indicated, I do not receive substantial payments, free merchandise, or other remuneration
for reviewing or mentioning products on this web site.
Any remuneration valued at more than about $10 will always be mentioned here,
and in any case my writing about products and dealers is always truthful.
|
||