Showing posts with label astrophotography. Show all posts
Showing posts with label astrophotography. Show all posts

Thursday, May 29, 2025

Sky Objects, Mostly Moon Shots


The pix in my YouTube collection are from having used mostly two point-and-shoot cameras. Incidentally, smart-phone cameras also have capabilities for taking similar sky pix.

For people who haven't considered photographing sky objects, look, up in the sky. It could be Supermoon! Build your own pic collection for day or night moons! Also, pick other sky objects that catch your fancy.

I recently perused my cloud account for pix I've uploaded there within maybe 10 years. One folder that caught my eye—"NearSkyObjects-Canon PowerShot ELPH 190 IS". It consisted of eight images from 2020 and six in 2021. I poked through my computer listings, seeing additional sky images I could include in my slide show.

Most images are of the moon—day, night, various phases. Several are in plant views. The final item is my time-lapse slide show of May 16 2022 lunar eclipse. Final tally of my sky objects for this blog topic is 23. (The count does not include YT videos from 2023 and 2024.)

Want additional astronomy-themed articles? Click for "astro topic" search results in my blog. Related: Sky/Astronomy Items YouTube playlist

Related: 4-sky-objects video—
Sky Objects, Mostly Moon Shots (Minute Teaser)"

Friday, February 28, 2025

Astro Imaging Session Piques Three-item Topic

What arose when the sun set down at the dark site we went to? Dark skies and objects (constellations, star clusters, nebulae, ...) that don't show up well in light-pollution, densely populated areas. What three items am I talking about? A TV tray table, a transparent cookbook stand, and a thin, portable gaming monitor.

In the Beginning (of the Astrophotography Session)

We met with another astronomy photographer (AKA astrophotographer) at a dark site, both parties for a nebula 1000 light years away. Our friend stayed long enough to also photograph a set of galaxies 60 million light years away. BTW, astrophotography is not merely taking one pic and seeing loads of details. Each session for each target tends to take hours, sometimes multiple sessions, specialized equipment for taking out-of-the-world pix, and cooperative climate conditions.

Portable Gaming Monitor

Our friend showed a new acquisition for showing audience members at outreach events—a portable gaming monitor that he read about in a NYT Wirecutter article, maybe "The Best Monitors". Arzopa seems eye-poppingly low cost, compared to other reviewed monitors. "Arzopa Z1FC 144Hz Portable Gaming Monitor Review" lists the measurements as 8.2 by 14.9 by 0.5 inches, weighing 1.7 pounds. (The traditional dimension reference is 16.1 (corner to corner).

Table Slots Between Slats a Hindrance to Stable Monitor Support

Anyway, he is understandably concerned about the monitor's thin foldable corner support falling through slots on his display table (square with narrow gaps between slats). Noting the monitor's thinness, I mentioned having a plastic, transparent cookbook stand that would probably work with such a monitor.

Another idea was trying a different table. I thought of our foldable TV tray table that measures 14.5 x 19 and has no gap hazards. BTW, Google images search shows good results for "acrylic cookbook stands" and "foldable TV trays". BTW, a quick, low-effort, low-cost solution to preventing monitor support fall-through, using a square piece of cardboard the same size as the square table would help.

Music Stand as Monitor Support? Nah!

An idea for stable displaying of the monitor briefly arose—using a music stand. It has variable height and tilt adjustments and horizontal lip. Downsides, however, are heaviness from metal weight and feet that take up space during transport. Furthermore, securing a monitor to avoid tipping or toppling it is concerning.

Musing Monitor Support Using No-slat TV Tray Table and Cookbook Stand

The next day, I thought about taking pix showing my cookbook stand and TV tray table. I took a set of pix—one of the stand (with open book) atop the table, one with additional items, and several showing different-angle views.

It occurred to me that I had the makings of a blog topic that included some idea exchanges about items not specific to astronomy. Also, I got to thinking of how to organize and create a helpful slide-show video.

Besides Monitor Musings

Some additional items in the video are are a yardstick and a set of trekking poles. The yardstick provides dimensional references. The sticks were mentioned during the imaging session. FWIW, a dark site can be challenging for those unfamiliar with the terrain. Even more challenging is navigating after the sun goes down. Better to have sticks and not need them than need them and not have them.

Update: Additional Info After Video's Upload on Feb 28 2025

After publishing the blog article and uploading the movie, our friend sent an image of his table and portable gaming monitor with the monitor's support leg. His fix for possible leg fall-through was a bottle cap.

A bottle cap does the job for the leg and the display is too thick to slide through. The [table's] gap actually cradles the bottom of the display! ... I added a couple of bits of foam insulation to the bottle cap to keep the leg centered in it.

The video's thumbmail shows the initial suggestion, the friend's pic, and additional ideas. The newer items include bungee cords for better securing a monitor for display and avoiding pit falls.




View use of slotted aluminum folding table and bottle cap.

Want additional astronomy-themed articles? Click for "astro topic" search results in my blog. Related: Sky/Astronomy Items YouTube playlist

Wednesday, March 16, 2016

Pizza Boxes Part 1

I’m guessing that way more than 99% of pizza boxes function as containers for pizza. Afterward, the boxes get tossed in the trash. (A recycle advisory says to not recycle them because grease and food contaminate the boxes. A few might serve as overnight leftover pizza containers, then tossed out.

Pizza Box Uses Besides for Pizzas
I can think of three additional purposes for pizza boxes (brand spankin’ new, however), of which I’ve used for two purposes in the past.
  • Container for a pizza jigsaw puzzle (similar to some Zazzle images)
  • Storage for a Bahtinov mask, my more recent pizza box use. Some masks are professionally manufactured, some are DIY and might or might not include an embroidery hoop, as the image at the top of the article.
  • If unfolded, a surface for a partially assembled jigsaw puzzle. To make it a corral for transporting a puzzle to another tabletop, fold and tape some edges to form walls.
Note: Typical pizza places probably sell three to five different pizza sizes, so you can pick your suitable box size.

Products that are Called Pizza Boxes
Some products are referred to as pizza boxes because of shape similarities, often box-like with matching length by width and short height.
Wending from Bhatinov Focusing Mask to Pizza Box
We recently made a Bhatinov focusing mask, which included lots of tedium in gingerly and accurately cutting slots. To protect the finished mask and its embroidery hoop, I thought a pizza box, with its stiff corrugated cardboard structure, would be perfect for storage.

After measuring the mask with hoop (about 10.5" diameter), I poked around the web for pizza box info. (Read nitty gritty details about boxes in Pizza Boxes Part 2.) Anyway, we bought a new 12" pizza box for 25¢ while buying an extra large pizza to go.

Those who are interested in astronomy and astrophotography and want to know more about Bhatinov focusing masks can start with some resources as follows: