Author: Andrew

An electrical engineer, amateur astronomer, and diver, living and working on the island of Hawaiʻi.

Venus Appears in the Sunset

Crescent Venus
Venus approaching inferior conjunction, 24Dec2013
This week will see the appearance of Venus in the sunset to become the evening star. Look for a brilliant object rising a little higher each night. This evening the planet is 9° above the Sun, by the 10th the planet will be over 11°. Even low in the sunset Venus is easy to spot, shining brightly at -3.9 magnitude.

On the 22nd Venus will joined by a thin crescent Moon. Only 1.8% illuminated the Moon will be a beautiful pair with the planet, only 6° away.

Washer Repair

Internet wins again.

Washer Repair
A broken pump in a washing machine… No problem.
Appliance parts have always been an interesting game. In thankfully bygone days the various companies would restrict access to parts, selling only to licensed repair shops. Some parts were available from more enlightened companies, many were not. Still, there are companies I will not buy appliances from, no parts, no deal.

The problem… A washing machine that will not spin, making a horrible racket instead. The pump bearing was shot, shutting down the whole drive system.

These days the parts game has been broken open by website based suppliers that will sell just about anything. Parts are still an interesting game, if not nearly as bad as before. Making sure you get decent parts from a website supplier. A bit of online research shows who has been around for a while and is recognized by the major online services. I bought the parts from AppliancePartsPros.com. Nice website, complete mechanical diagrams of the washer with cross indexed part numbers, no fuss, no muss. Real Whirlpool parts show up in the box.

Consider that the cost of getting an appliance repairman here in Waikoloa is hundreds of dollars. And that is just for the visit, the parts would have been additional. My total cost for this repair? $80.45 after I added a new belt and shipping to Hawaiʻi.

It did take five days for the part to show up, FedEx home delivery. Fortunately we had enough clean clothes to get by without a trip to the laundromat. Meanwhile the machine was shoved back into the puka on its front and a sheet of cardboard, feet stuck out past the door, a pile of tools on the back. The cats though this was quite interesting and investigated thoroughly.

The most difficult part of the job? Disassembly? Diagnosis? Those were quite easy, it took about 15 minutes to get the washer out of its home, turned over and find the problem. The most onerous part was cleaning up the pile of lint, dust and cat-hair found behind that machine when I pulled it out of the closet.

Evicted? Possible Black Hole Found 2,600 Light Years from Home

W. M. Keck Observatory press release…

Markarian 177 and SDSS1133
Using the Keck II telescope in Hawaii, researchers obtained high-resolution images of Markarian 177 and SDSS1133 using a near-infrared filter. Credit: W. M. Keck Observatory/M. Koss Et Al.
An international team of researchers analyzing decades of observations from many facilities — including the W. M. Keck Observatory on Mauna Kea, the Pan-STARRS1 telescope on Haleakala and NASA’s Swift satellite — has discovered what appears to be a black hole booted from its host galaxy. The team was led by Michael Koss, who was a postdoctoral fellow at the Institute for Astronomy (IfA) at the University of Hawaii at Manoa during most of the time the study was ongoing. The study will be published in the Nov. 21 edition of Monthly Notices of the Royal Astronomical Society.

The mystery object is part of the dwarf galaxy Markarian 177, located in the bowl of the Big Dipper, a well-known star pattern within the constellation Ursa Major. Although supermassive black holes usually occupy galactic centers, SDSS1133 is located at least 2,600 light-years from its host galaxy’s core. The team was able to detect it in astronomical surveys dating back more than 60 years.

In June 2013, the researchers obtained high-resolution near-infrared images of the object using the 10-meter Keck II telescope at Keck Observatory. “When we analyzed the Keck data, we found the emitting region of SDSS1133 is less than 40 light-years across, and that the center of Markarian 177 shows evidence of intense star formation and other features indicating a recent disturbance that matched what we expected for a recoiling black hole,” said Chao-Ling Hung, a UH Manoa graduate student performing the analysis of the Keck Observatory imaging in the study.

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