Comet Hyakutake on the night of its closest approach to Earth, March 24/25, 1996.
The recent apparition of Comet ISON prompted me to reflect on the all the comets I've been fortunate enough to see in the past 20 years. Here's #1 in my highly subjective selection of the five best comets from the last two decades.
Can you imagine what Galileo would think if he could try a pair of modern binoculars? In this issue's Binocular Highlights column, I describe how you can use your binos to duplicate all the great astronomer’s solar-system discoveries.
In this month's Telescope Workshop column, I highlight Jim Chung’s nifty folded refractor. Jim’s scope demonstrates how you can perform the optical equivalent of putting ten pounds in a five-pound sack.
Magnificent Comet Hale-Bopp on April 3, 1997. The bright yellow star near the comet's head is Gamma Andromedae.
The recent apparition of Comet ISON prompted me to reflect on the all the comets I've been fortunate enough to see in the past 20 years. Here's #2 in my highly subjective selection of the five best comets from the last two decades.
Like a shot out of the dark, Comet Holmes seemed to emerge from nowhere to become a remarkable sight in autumn 2007.
The recent apparition of Comet ISON prompted me to reflect on the all the comets I've been fortunate enough to see in the past 20 years. Here's #3 in my highly subjective selection of the five best comets from the last two decades.
Magnificent Comet McNaught on the evening of January 11, 2007.
The recent apparition of Comet ISON prompted me to reflect on the all the comets I've been fortunate enough to see in the past 20 years. Here's #4 in my highly subjective selection of the five best comets from the last two decades.
Comet PanSTARRS photographed from downtown Victoria, B.C. on the evening of March 26, 2013.
Few celestial objects excite the imaginations of stargazers and the general public like a good comet. The recent apparition of Comet ISON prompted me to reflect on the all the comets I've been fortunate enough to see in the past 20 years. There have been some stunners, some surprises, and a few that could have been great, but fell short. Here’s my (highly subjective) pick of the five most interesting and spectacular comets from the past two decades.
Late autumn is a fine time for galaxy observing. In this issue's Binocular Highlights column, we spend a little time in Sculptor, visiting the remarkable spiral, NGC 253.
Ball-and-socket telescopes have many benefits, but they also suffer from a few limitations especially if you want to make your own. Where do you get the large “ball” that the design requires? This month's Telescope Workshop column features Chuck Lott’s nifty solution to this problem.
Getting to know our celestial neighbour is a lot easier with a few well-chosen resources. In my regular On The Moon column, I list the charts, books, software, and web sites that I consult most often. Some of them you may have heard of, but probably there are a couple that will be new to you.
For those of you unfamiliar with SkyNews, read on . . .
Just a quick note to all my readers to check out the new and improved SkyNews.caweb site. I’m happy to say that I get to be the site’s editor and work with some of the best astronomy writers in the business, including Terence Dickinson, Alan Dyer, and Ken Hewitt-White, to name but three. One item I hope you’ll find of particular interest is my regular “This Week’s Sky” column, which will highlight the most interesting observing events over the coming seven days. Check in regularly and enjoy everything we have on offer!
I built my 12.75-inch Dob for less than $700 — much less than a comparable commercially made scope would have cost. But is making your own scope always a money saving proposition? That's what inquireing minds (canine or otherwise) want to know.
For diehard ATMs, building telescopes is a way of life. But for others, the decision about whether or not to make a scope often hinges on economics. Will I save money building my own? The question shows up regularly in on-line forums and in my e-mail box. Before the emergence of a large-scale commercial telescope industry, the answer was a definite “yes!” But with the current abundance of low-cost, imported Dobs, and the increasing expense (and scarcity) of telescope-making supplies, it’s reasonable to wonder if it’s still possible to save a few bucks by going the home-made route. The prevailing conventional wisdom says “no,” but my own experiences suggest the answer isn’t as cut and dried as that.
Me, my new scope, and a bloody big rock. (Courtesy George Brandie)
My new airline-portable telescope is featured in the March 2013 issue of Sky&Telescope, but given the publication's finite page space, it wasn't possible to include a great number of photos. So, presented here are a series of detail images along with some construction tips and tricks. Keep in mind that this isn’t intended to be a full description of the scope and how it's built — it’s merely a supplement to the S&T article, so be sure to give that a read first.
Requiring only a few parts, this simple and effective setup provides stable images for detailed views of the night sky.
“This is the best binocular mount I’ve ever used!”
Those were the first words out of my mouth as I came indoors from testing my just-completed binocular rig. It’s rare that I build something that actually works better than expected, but finally I’d come up with a binocular mount that provides steady views, is easy to use, very portable, and simple to build. It was a good night.
I’ve been building and using telescopes for more than three decades and I’ll share with you a secret: collimating a Newtonian reflector is easy. So why does it seem so difficult when you’re just starting out? Probably because you’ve done your homework by Googling the subject and have read and re-read everything you’ve found. And now, you’re lost in a forest of information — some of it contradictory, some of it densely technical. Truly, sometimes less is more.
This image of the Scorpius Milky Way was captured from Costa Rica with a DSLR camera and the simple hinge tracker mount described here.
If you have a DSLR camera and are interested in astronomy, you’ve probably considered dipping a toe into the astrophotography waters. But a camera is only part of the equation — for exposures longer than a few seconds, a tracking mount is usually necessary. Unfortunately, most suitable mounts are relatively bulky, or expensive, or both. But not the hinge tracker. It costs less than $10 to build, takes less than an evening to assemble, and requires no batteries. And best of all, you can put one together even if you’ve never built anything more complicated than Ikea furniture.
I invite everyone to check out my web site, FilmAdvance.com.
In addition to astronomy, photography is a big passion of mine. So, I started FilmAdvance.com as an outlet for my photographic explorations. There will inevitably by some astronomy related content posted there, but mostly it’s about seeing the universe through the lens of a camera, instead of the eyepiece of a telescope. Look in on it from time to time to see what I've been up to with my cameras and darkroom. Enjoy!
Combining optical excellence with rock-steady views, Canon's image-stabilized binoculars are a stargazer's dream come true. But is one best for you?
For a long time, 7×50 or 10×50 binoculars were considered the best choice for stargazing. Such binos are relatively lightweight, inexpensive, and capable of delivering fine wide-field views of the heavens. But most people find that hand-held 10×50s represents the upper limit of the weight and magnification comfort zone. Models featuring higher magnification or more aperture require a tripod or dedicated binocular mount for steady views. Even 10×50s rarely work near their potential without support. Unfortunately, such devices ensure that an instrument much loved for its portability and convenience becomes encumbered with as much paraphernalia as a small telescope. Enter the image-stabilized binocular.
Attention to detail is what separates a regular Newtonian reflector from one optimized for high-contrast performance. This 6-inch f/9 uses every trick in the ATM’s book to deliver superb planetary and deep-sky views.
This was the first telescope I made using my own optics. Like most telescope makers, I got started the easy way, by building Dobsonians with mirrors ground by others. But one day I got bit with the mirror-making bug. I blame my friend Lance Olkovick, our local club’s mirror-making ace. But why a long-focus 6-inch? At the time I was a hardcore Jupiter junkie and was convinced that a long-focus Newtonian would deliver excellent views of my favourite subject. I also wanted to prove a point.
The old saying that less is more rings true for telescope magnification, but there are many factors to consider before choosing your ultimate wide-field eyepiece.
Low-magnification views of the night sky can be breathtaking. It’s only with low power that we can fully appreciate the splendor of the Pleiades, the foggy expanse of the Andromeda Galaxy, or the wispy filaments of the Veil Nebula. But if discussions on internet forums are anything to go by, there's a lot of confusion out there about how magnification, field of view, and exit pupils relate to each other. And without understanding these factors, you might end up shortchanging your telescope’s low-power capabilities.
What you need to know when it comes to optimizing your scope’s thermal behavior.
Generations of backyard astronomers have debated why, inch-for-inch, the performance of a high quality refractor usually edges out an equal-quality Newtonian reflector. This disparity is most apparent when viewing low-contrast planetary detail — the images in a good refractors often have a touch more snap to them. Is there some intrinsic shortcoming in the design of the Newtonian reflector that makes this inevitable?
This simple, easy-to-build mount provides the perfect introduction to long-exposure astrophotography.
Round stars. That’s the difference between astrophotos captured with a camera that tracks the sky’s motion versus one that doesn’t. Traditionally you’d make a tracked photo by placing your camera piggyback on a telescope with a motorized equatorial mount. But that’s a lot of equipment to deal with if all you want are some nice-looking constellation portraits or a shot of a newly discovered comet — especially if you have to travel to reach your favorite dark-sky destination.