Tag: Astronomy

  • Digital Sketches

    Digital Sketches

    While clearing off some space on my iPad, I found a bunch of sketches that I’ve never posted. When I sit down to paint, I always warm up with some sketches. Doesn’t matter if I’m working in a digital format or traditional media. The warm up helps me get into the groove.

    Sometimes these sketches take on a life of their own and become finished pieces. Other times I just lost interest or the idea didn’t quite gel the way I wanted. And some of these were merely an exercise to try out a style or trick. As I look back over the last year, I’ve probably spent too much time in the quick sketch stage but it’s helped me knock off the rough corners here and there.

    So here’s a gallery of quick studies to enjoy:

    Sketch Gallery

  • Featured on Amazing Stories Magazine

    Featured on Amazing Stories Magazine

    This week I was featured on the Amazing Stories website in a series that profiles Space Artists, members of the IAAA (International Association of Astronomical Artists). I’m honored and privileged to have been selected for this article alongside artists that I’ve looked up to over the years. If you get a chance, check it out:

    IAAA Gallery: Christopher Doll – Experience Designer

  • Camping Under Dark Skies

    Camping Under Dark Skies

    After responding to a tweet by the folks at Orion Telescopes, I was invited to contribute some thoughts on my experience camping with telescopes and astronomy. The article appeared last week on their site, take a look!

    Camping Under Dark Skies: What to Bring

    (Photo above by Scott “seattleforge”�Thoms )

  • My First Astrophotography with a Telescope

    My First Astrophotography with a Telescope

    Up until yesterday all of my star photos have been taken with my Canon 40D mounted on a tripod. I�ve read enough to know you can get fantastic images with just your DSLR, without a telescope. And in the process you learn a lot about exposure times, settings, and post-processing.

    Last week I stepped up to a Celestron C8, a Schmidt-Cassegrain telescope with an 8-inch mirror. My thanks to the Seattle Astronomical Society for offering equipment check-outs to members. Exciting as it is to try out a great telescope, my family was thrilled to check out the moon the first night we set it up. That�s Jessica, eight years old, who just finished frosting the birthday cake for my wife Stephanie.

    The Moon

    September 22nd, 2012 was the International Observe the Moon Day, and here we were observing the moon. The moon was nearly a full quarter, with a great view of the crater shadows along the terminator. After taking turns being blown away by the moon at dusk, I took out my camera with the appropriate telescope adaptor. Lining up such a large, bright target wasn�t nearly as challenging as trying to capture stars without a telescope. But I took 60-plus photos anyway, bracketing settings, focus, and playing with the composition.

    Of all the photos, this view was my favorite and I present it to you with minimal post-processing in Photoshop. What you see below is almost exactly as it was shot. I did adjust the brightness and contrast only slightly, and framed it for composition:

     

    Jupiter

    I spent the rest of the evening fighting with hazy viewing conditions, enjoying the stars that I could see. Around 2:30am, already far later than I�d planned on staying up, this showed up over the trees:

     

    I grabbed my camera, and set about taking photos. By now I�d already moved the telescope to a clearer spot in my backyard which meant I had ruined my polar-alignment (the telescope was no longer aimed at the Earth�s point of rotation, meaning it would be difficult to track any object easily with the built-in motor). Undeterred, I went back to settings I�d learned while shooting stars without a telescope. Short exposure times, lots of them, stack and process the images later.
    I took over twice as many individual pictures of Jupiter than I�d taken of the Moon � over 120. I could get ten photos shot before having to re-center Jupiter in the viewfinder � the Earth�s rotation is far more obvious when looking through a telescope. From those, I was able to do a first pass at processing the picture you see above, with ten of the best shots.
    I�m quite happy with what I�ve accomplished so far, recognizing this is all part of a long learning curve. Next time it�s polar tracking and hopefully, with clear skies, some deep sky objects

  • Seattle Astronomical Society Star Party – September 2012

    Seattle Astronomical Society Star Party – September 2012

    I’m revisiting my love of Astronomy and Space, an interest I’ve had as far back as I can remember. It’s been years since I’ve owned my own telescope, and now with my interest rising I’ve reached out to the local Seattle Astronomical Society. As a new member, I attended last weekend’s Star Party held at the Snoqualmie Point Park, about 40 minutes East of Seattle. Star Parties are excellent for meeting others who are interested in Astronomy, and to learn more about Star Gazing and Telescopes. While I’m saving my lunch money for a new telescope of my own, this was a great chance to sort out what would be best for me.

    The park was spectacular, with sweeping views of nearby Mount Si and the Cascade Mountain range. Weather reports were calling for clear skies, although there were some clouds remaining, mixed with smoke from wildfires over the pass. Not quite far enough away from Seattle and the outlying suburbs, a slight glow remained to the East for most of the evening.

    This was my first SAS event, so I was expecting to meet a lot of new people. David Ingram was on hand to welcome me, and had already set up his gigantic Dobsonian.

    Bob Mulford was there �as well,�with a nicely crafted Dobsonian. I was hoping to see a home-built telescope, having just checked out Richard Berry’s book “Build Your Own Telescope”. Also on hand, Jon Bearscove of the Galileo Astronomy Unclub, Mohammed, Denis, Zong (forgive me, I have no last names here).

    As the sun went down, more people arrived and telescopes were set up. David told us all that although this was to be a members-only Star Party, a High School class would be visiting for the first part of the evening as part of the Astronomy Outreach program. The class seemed legitimately interested in spending their Saturday evening under the stars, and they certainly had amazing views through these telescopes.

    The clouds slowly dissipated, and just as everyone was deliberating whether or not we’d have clear skies, the first stars showed up.

    While I don’t have my own telescope, I did bring my digital camera, a Canon 40D, with tripod and two lenses – a 50mm f/1.8 prime lens, and an 11-22mm Wide Angle lens. With clear skies that are darker than what I get in my own backyard, I wanted to try to capture more wide field shots of the skies. This would be perhaps my fifth attempt at star photography, and to be honest I’m still not entirely happy with my own results, but I’m learning a lot each time. Most of the time, I get something that looks like this:

    If you click on the full-size version you’ll see that I did indeed capture a lot of stars. Still, it wasn’t nearly as amazing a sight as I was about to witness. Before the High School students arrived from their overview talk nearby, Bob called me over to his telescope “Hey Chris, do you want to see M14, a globular cluster?”

    Why yes I would, I thought. The optics on these telescopes were far better than any I’ve owned, better perhaps than any I’ve looked through personally. With a quality eyepiece, it’s like looking out a window on a spaceship. Some have such a wide angle, you do almost feel like you could fall right in. The depth you see is staggering, especially in an object like a globular cluster with many points of light within the same field. Pictures truly do not do it justice, I highly recommend that someday you too seek out a local Astronomy gathering like this. Use someone else’s expensive gear, they’ll be thrilled to show you the sights.

    I drifted along to several other setups, and even got my first look through a 2-inch eyepiece. These are much larger than what you would be used to, more like a giant picture-window on a starship. I managed to catch myself on the edge before falling into the double, double-star in the Big Dipper.

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    My Photos, and the rest of the night

    With the students now�queuing�up to see different sights on our now clear skies, I returned to my camera and set about getting as many quality shots of the dark skies as I could. My tripod isn’t equipped to track the stars’ apparent motion, like many of these telescopes, so I had to keep the exposure times low. Andromeda had just moved into the clear, and knowing it’s bright enough that even my camera lenses could pick it up, I decided that would be my target. One of the raw shots even had a tracer from a shooting star:

    As I proceeded with taking my shots, behind me I could hear a number of SAS folks calling out the objects they were pointing at – and calling them by their proper names: M31, Albireo the double star, the Coathangar. Clearly I needed to brush up on my Astronomical names, memorize the Messier catalog, and otherwise get back up to speed.

    Mostly I managed to get a range of images of the area around Andromeda, enough to where you can actually make out the galaxy. Later, after hours of Photoshop sorcery, you can pull out enough information to get a reasonably decent image. Andromeda is a bright object, one that can be easily seen with any binoculars (or the naked eye on a very clear night, free from any city lights), and can be captured somewhat easily without the aid of a telescope. And while I’m not producing images fit for a coffee-table book, I’m pretty impressed with what you can get from a relatively inexpensive lens and a DSLR. Here’s a closer shot of Andromeda, with very little post-processing.

    I have no illusions that my astro-imagesbarely qualify for even rank-amateur status, but it’s a start.

    I left a bit before the final hours of the Star Party, but I’m thrilled to have met a lot of really great people and see some amazing sights. The Outreach aspect of the SAS is quite appealing to me. It’s great to see the reactions on people’s faces, the first time they see some of these objects. I’m sure I had the same response myself. I look forward to attending more of these Star Parties, and I certainly encourage you to seek them out in your area. You won’t forget it.