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Quadrans Muralis: a demoted constellation lives on as the radiant of the January Quadrantids

Johann Bode's 1801 Uranographia, showing Quadrans Murales, Boötes and other constellations

Boötes, Canes Venatici, Coma Berenices and Quadrans Muralis

The Northeast sky Jan 4 at 1:00 a.m. PST. Look between Ursa Major and Minor, and the bright star Arcturus in Boötes for the location of Quadrans Muralis on the Boötes-Draco border

Looking Northeast [...]

The Perseids from Amboy Crater

Perseid Peak Aug 12-13 18h-7h UT

My Perseid count Aug 13 06h-11h UT

Sunset at Amboy Crater, with moon and Venus

Amboy Crater by day

For the past year I’ve been traveling to dark skies to observe and count meteors during the major showers. Armed with a clipboard and a comfy chair, I stare at [...]

Oh, No! Not the return of the Mars in August email :-(

Size comparison of Mars (at closest and furthest approach) and the moon

See Mars and the moon near one another in mid August

2010 marks the eighth annual return of 2003′s Mars In August email.

The email always says something about Mars appearing as large as the moon, but there are annual variations to the [...]

Free Telescope to first caller

Updated 1/1/2012

Before – 13.1-inch f/4.5 Coulter Odyssey 1

After – – note the original blue ground board

Update: A colleague at work had a telescope he wanted to give away. I advertised it and found someone who wanted it. Here’s a before and after image. The telescope has been reincarnated as you [...]

A morning comet

Use a chart like this to locate where to look for your object

Can you find the constellation Perseus and comet McNaught in Mojo’s lovely skyscape?

Mojo's photo of Comet McNaught

Quick comet sketch with notes. See the long ion tail, the bright coma, and the short dust tail in my sketches

Comet C/2009 [...]

A Ten Planet Night

Spooky Halloween Observing, 2014 edition

The ghoul on the moon

NGC 246 the Skull Nebula

IC 2118 Witch Head Nebula

It’s time to get out the Milky Way and Mars candy bars, the Moon Pies and the Starburst chews. It’s Halloween! The moon — just past first quarter — will greet your trick or treaters this year. A first quarter [...]