Greetings, fellow SkyWatchers! Are you ready for a bit of a challenge this weekend? Then break out the big telescope and let’s go galaxy hunting in Cetus as we have a look at Hickson Compact Group 16. If you’d like to try something a little easier, then “monkey” around with planetary nebula, NGC 246! Got binoculars or a small scope? Then take on NGC 247 – it’s big, bright and beautiful! When ever you’re ready, I’ll see you out under the stars….
Friday, November 28, 2008 – Tonight in 1659, Christian Huygens was busy at the eyepiece – but he wasn’t studying Saturn. This was the first time any astronomer had seen dark markings on Mars! If Huygens and Herschel were alive to enjoy today’s new technology, you could bet they’d have a big backyard scope aimed about four degrees east of the Zeta-Chi pairing in Cetus to have a look at Hickson Compact Galaxy Group 16 (RA 02 09 31 Dec -10 08 59).
Although he died a year later from an unrelated disease which could not be cured at the time, Enos the chimp remains one of our most enduring space heroes. Tonight let’s monkey around with a planetary nebula as we’ll take a look at 8th magnitude NGC 246 about five degrees north of Beta Ceti.
Discovered by Sir William Herschel, it is often referred to as the “Skull” nebula, but perhaps tonight you’ll see the smiling face of Enos forever leaving its mark on space!
Sunday, November 30, 2008 – Just as a curiosity, on this day in 1954, Elizabeth Hodges was struck by a five kilogram meteorite in Alabama. Duck! If you’re out at sunset tonight, you’ll be struck by the beauty of the slender crescent Moon illuminated by Earthshine. Not far away, look for the pairing of Venus and Jupiter, because things are going to get a lot cozier as the last month of the year begins!
As one of the largest members of a group of galaxies located around our galactic south pole, NGC 247 seems to be standing still in space – at a distance of six to eight million light-years. At its core is a near stellar-sized nucleus – a bright, central mass of stars which dominates its patchy looking structure. Look closely at its northern edge, for NGC 247 sports a huge area of dark, obscuring dust – or what may just be an empty space between its clouds of stars. Note a bright star caught on its southern flank.
While you may find this low surface brightness galaxy a bit difficult unless you stick with the most minimal of magnification, you can not only congratulate yourself for capturing another Herschel “400” object, but Bennett 3 as well.
Until next week? As for the Moon… But keep on reaching for the stars!
This week’s awesome photos are: Hickson 16 – Credit: Palomar Observatory, courtesy of Caltech, Enos (and handler) – Credit: NASA, NGC 246 (south is up) – Credit: Palomar Observatory, courtesy of Caltech and NGC 247 – Credit: Palomar Observatory, courtesy of Caltech. We thank you so much!
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