A couple of good turning components photos I found:
“The Companion” By Bulova Model-206 Portable AM Tube Radio
Image by Andrew Pilling
This Teal Blue "Companion" by Bulova transportable AM radio, model 206 was a good (curbside) uncover. The physique was in fairly very good condition, so I opened the back of the radio and noticed that the two (ancient) D batteries have been corroded and brought on mild staining with no apparent harm to the interior. I also noticed that one particular of the four vacuum tubes, a (1U5) tube was MIA. Right after a appear-see in the tube bible which informed me that there were comparable tubes with different pin allocations but, there weren’t any identical substitution tubes. I was in a position to locate and replace the (1u5) vacuum tube. Subsequent without having performing any type of tests, I rolled the dice and turned it on. "EUREKA" as soon as again an additional roadside discover started up and worked, then the inevitably dreaded (par for the course) obligatorily telltale HUM of all HUMS became really apparent. So I turned on and warmed up my favorite and trustworthy VTVM-voltmeter (the Hewlett Packard 410B). With voltmeter probes in hands, I went appropriate to the usual suspect, The infamous electrolytic filter capacitor. It was shot so I left it in place, being that they are a Royal discomfort on my patience to desolder, take away, disassemble and gut out the filter caps fragile cylindrical cardboard housing to be stuffed with three new electrolytic capacitors, then reassemble and solder the component back into location, So I performed a bypass using 3 new e-caps, carefully tucking them inside of the tightly cramped beneath carriage of the chassis. I turned it on and the HUM was no longer noticeable, "VOILA" it functions. This Bulova "Companion" portable radio will be a nice addition to my collection.
Google’s Master Program
Image by jurvetson
The Master Strategy has several paths. Some turn to the dark side of Skynet, and most lead to user happiness…
(Text is a lot more readable at full size, or subsequent frame)
Laboratorium Solaris: back into action
Image by Sergei Golyshev (reloaded 🙂
06.01.2015, 11:45 (UT+3), clear cold winter day, -17°C, the Sun is eight° above horizont and looks like as if being observed by way of the flowing water.
The image looks satifactory at 500 pix size.
WARNING! Sun is hazardous, use suitable filters for observing and imaging!
Canon 60Da by way of BP Hyperion Zoom eight-24 mm eyepiece on Coronado PST more than photo-tripod.
Aperture 40 mm
Native focal length 400 mm
Projection focal length 24 mm
Television = 1/200 s
Av ~f/20
ISO 200
Capturing application: NA
Exposures: 7 out of 28 (poor seeing, extremely poor). RAW pictures were converted into monochrome and adjusted for some more contrast in Canon DPP and exported as 16 bit TIFF. Each and every frame was calibrated with master dark made of median of 10 dark frames and master bias produced in the same way from 20 offset frames.
Master calibration frames, substraction and pre-alignment had been made in ImageJ.
Frames were analysed and stacked in Autostakkert2! 2.3.021alpha (specially for stacking H&alpha photos, ha-ha :), resulting image was subjected to Richardson-Lucy deconvolution (Cauchy type PSF, 3,six units, 7 iterations) and was sent to Photoshop for "creative" clean-up, downsampling and coloration.
Note: this is quick exposure image, so the red channel dominates, which is right. But I have followed the effortless way of turning raw images into monochrome in raw converter. This algorithm behaves like as if it makes a sum of all channels and somehow weights the contribution of red and blue in relation to green. But green channel includes largely its personal noise and other junk elements. Perhaps it really is greater to not to do this, but extract red from color image and then down-sample it ,5x to smooth de-Baeyring artifacts? Hmm…