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Querying the Saguaro Astronomy Club Deep Sky Database Using MySQL

Submitted by Khalid on

The members of the Saguaro Astronomy Club (SAC) have a long history of producing useful data from observations, and making it available for download by amateur astronomers worldide at no cost.

One data set that they produce is SAC DeepSky list which is currently at version 8.1, from 2010.

The data is provided in a variety of formats, from Microsoft Excel to comma separated variables.

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Using Canon EOS DSLR cameras bulb mode in gphoto2

Submitted by Khalid on

Taking pictures of the night sky almost always involves exposure times that are more than 30 seconds. This is often couple with taking many pictures for later stacking into better images.

For this, the camera has to be set to Bulb mode. You can automate taking multiple exposures by using an intervalometer, which is a remote release with a device with some electronic circuits and LCD screen to make all this possible.

You can also automate this using a Linux computer running gphoto2 software. The computer can be as small as a Raspberry Pi, or a laptop.

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Internet Fraud: Scam in the name of Suzanne Mubarak

Submitted by Khalid on

The usual internet scams never end. They are often in the name of someone corrupt and famous.

After the revolution of 2011, Egyptians deposed Hosni Mubarak. And now there are scams in his wife's name, as follows:

Mrs. Suzanne Hosni Mubarak
Resident Address: Kamal El Din One St.
Garden City, Cairo Egypt.
Email: susannemub@myself.com

Dear Sir/Madam

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How to install MiniDLNA on Ubuntu Linux 14.04 LTS Trusty Tahr

Submitted by Khalid on

When I was running Ubuntu Linux 12.04 LTS on my home server, I had installed minidlna as a media server that is accessible to DLNA capable clients, including a Smart TV where one can view photos on a large screen.

However, when the server was upgraded to 14.04 LTS, minidlna stopped working. Searching Google turned up forum posts from 2014 with instructions that no longer work.

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Arabic Origins of Modern Western Star Names

Submitted by Khalid on

When an Arabic speaking person starts to get interested in Astronomy, he will immediately notice that many stars have Arabic sounding names.

For example, the other day, I was in the backyard with a 20 year old relative. I was

The reason for this is historic, and has to do with how the knowledge of sky with its constellations, and stars moved from one civilization to the next. First, Ancient Egypt to Babylon, then to the Greeks, then translated into Arabic during the Islamic golden age, and from there to Europe via Latin by yet more translation.

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Mistaken Identity: Musical Instruments Supplier

Submitted by Khalid on

I got the following message on my web site today. I have no idea why someone would mistake my site for a company that sells musical instruments ...

deepak [deleted] ([deleted]@gmail.com) sent a message using the
contact form:

dear sir,

Pls. send us a quotation for musical instruments for school band -

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The Raspberry Pi 2 as an Internet Radio using Mopidy

Submitted by Khalid on

Recently I got a Raspberry Pi 2, which is said to be 6 times faster than the original Raspberry Pi B. This makes it more suitable for tasks like being a media player.

Getting a full CanaKit Raspberry Pi 2 Ultimate Starter Kit adds many components for experimentation (LEDs, resistors, breadboard, 40-pin ribbon cable, ...etc.). The price was attractive since with Amazon you get free shipping, and therefore it will be cheaper than getting it directly from CanaKit.

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