Mercury Transit, May 2016
- Last Updated: 14 February 2016
The Mercury Transit Across the Sun
Monday May 9th, 2016
By D. I. Nakamoto
By the time the Sun rises above the horizon on the morning of May 9th, Mercury will already be in front of the disk. It will be halfway on its journey across it by 7:57am. It will finally leave the disk about 11:40am.
This will be the first time Mercury has cross in front of, or transited, the disk of the Sun since 2006, and it’ll be the last one until three years from now in 2019.
But all you’ll see is a TINY black disk crossing slowly across the Sun. And it’s REALLY tiny; only 12 arc-seconds, a fifth the size of Venus’ disk (60 arc-seconds) when it transited the Sun in 2012; I imaged from Griffith Observatory:
Urban Imaging Under Bright Urban Skies
- Last Updated: 30 August 2015
A Report on the Aug 22nd 2015 Griffith Public Star Party
By D. I. Nakamoto
Temperatures were warm during the day, although as night descended it got cool enough for me to need a jacket, which I forgot to bring with me. The skies were clear of clouds, and the wind was mild with gusts at times, but there was a lot of haze from the local fires and all their smoke, meaning bright skies tonight. Plus Griffith decided to resow their famous front lawn, which meant the antique street lamps lining the sidewalks had to be kept on for safety reasons, adding to the already bright environment. And of course there was a first quarter moon up in the sky.
O! Ye Gods of Watts, Oomps, and Amps!
- Last Updated: 25 August 2015
An Article Written By Kevin Gilchrist
Has this ever happened to you? Did you set up your GoTo telescope and the motors don't seem to be as loud and fast as they usually are? Was star alignment fraught with errors? Did your scope suddenly seem to think it was in South Africa? Check your power supply! If you are like most of us gear-heads you will have a collection, large or small, of Wall Warts. Those pesky little black plastic boxes with wires seem to have a life of their own.