I have been shooting the night sky since my grandfather gave me my first 35mm SLR in junior high. Today’s digital SLRs allow us to shoot amazing things that I could only dream of a couple decades ago! Below are some tips and suggestions that I teach at night photography workshops for shooting the Milky Way.
Astrophotography is a hobby rapidly gaining popularity thanks to the fast advancing CMOS sensor technology. Over a decade ago, the light recording material employed in astrophotography was primarily chemical emulsion. Its low sensitivity makes it very hard to record the weak signal from deep space. In addition, the lack of real-time feedback is a huge source of frustration for beginners. Operational errors such as out-of-focus can only be realized after several nights of hard work after the film is developed. In the mid 90s, the advent of cooled CCD cameras provided solutions to both the sensitivity and real-time feedback problems. However, their high prices and miserably small sensor areas limited their uses to only a few kinds of astrophotography and to very enthusiastic astrophotographers. While CCDs revolutionized astronomical research, this technology has never really changed the landscape of amateur astrophotography. The true turning point took place in 2002. After Fujifilm announced its FinePix S2Pro DSLR and showcased amazing astronomical pictures taken by this camera, people started to seriously explore DSLRs for astrophotography. DSLRs can provide real-time feedback, which is very important for beginners. They have sensitivities not much worse than CCDs, and DSLRs with large sensors (APS-C) are quite affordable nowadays. Today’s landscape in astrophotography is shaped by a series of CMOS-based DSLRs from Canon, but DSLRs and mirrorless cameras based on Sony sensors are gaining popularity very quickly.
One of our readers was kind enough to send a link to a YouTube video from NASA’s Solar Dynamics Obervatory (SDO), which has been capturing images of the whole sun 24 hours a day for the last 5 years. After putting together image sequences into a time-lapse, NASA created a stunning video that is absolutely worth watching. If you visit NASA’s official website, you can click on the Related Media link and see many more videos and images from SDO, which are all as amazing as the below video:
And for those who are interested in the newly announced Nikon D810A, below you will find some sample images from the camera. Please keep in mind that aside from the last photo, all sample images were taken as composites with multiple images, then put together via special stitching software for astrophotography. That’s why EXIF data is not present in these images. As usual, you can download images to your computer to see a full-sized version.
It has only been 8 months since Nikon announced the D810 and today the company announced a very specialized camera for astrophotographers, the Nikon D810A. In essence, the D810A is pretty much identical to the existing D810 – the camera has exactly the same body build, ergonomics, sensor, etc. What has changed is the filter stack in front of the sensor, which contains a modified infrared filter that is more sensitive to super low light emitted by the stars and nebulas (specifically, the hydrogen alpha wavelength). In addition, Nikon implemented additional shutter speeds (4, 5, 8, 10, 15, 20, 30, 60, 120, 180, 240, 300, 600 and 900 seconds) to give more flexibility for astrophotography needs. While the announcement is certainly big for astrophotographers, because it is world’s first full-frame astrophotography DSLR camera, I do have a few concerns about this particular release. Having done a bit of research in astrophotography last year (my primary interest was in deep space object photography using specialized mounts and CCD sensors), I learned a little bit about the tools and what’s needed.
Many travel and landscape photographers, including myself, try to avoid shooting scenery with a clear blue sky. As much as we like seeing puffy or stormy clouds to spice up our photographs, we have no control over what the nature provides each day. Sometimes we get lucky and capture beautiful sunrises and sunsets with blood red skies, and other times we are stuck with a clear, boring sky. When I find myself in such a situation and I know that the next morning will be clear, I sometimes explore opportunities to photograph the stars and the Milky Way at night. I am sure you have been in situations where you got out at night in a remote location and saw an incredibly beautiful night sky with millions of stars shining right at you, with patches of stars in a “cloudy” formation that are a part of the Milky Way. If you do not know how to photograph the night sky and the Milky Way, this guide might help you in understanding the basics.
If you love astrophotography, today (06/23/2013) you will witness a unique event called “The Supermoon”, where the moon will not only be full, but will also appear larger than normal. If the skies are clear and you are lucky to see the moon, this will be a great time to get out and try some moon photography. If you have never done it before, you might be wondering what camera gear and settings you should use in order to capture the moon in its full glory. In this short article, I will give advice on how to photograph the Supermoon and explain some of the steps involved in the process.
With Nikon offering a niche D800E camera (which, against some expectations, will likely prove to be very popular) next to its mainstream model, the D800, Canon has decided, after a 7 year break, to take a similar step with the introduction of a modified Canon 60D model, the 60Da. Seven years ago Canon brought 20Da, a modified version of a popular Canon 20D DSLR. 20Da was, essentially, the same camera with a different IR filter and added live view functionality which, while having severe limitations at that time (inability to function in a bright environment), was very useful when manually focusing on stars at night. Changes to IR filter made the camera about 2.5 times more sensitive to Hydrogen Alpha wavelenght (approx. 656nm), which helped the 20Da capture space nebulae much more easily.
Here is what the blood red Total Lunar Eclipse of 2010 looked like last night:
By no means I’m anywhere close to being good in astrophotography. In fact, taking good pictures of stars requires expensive telescope equipment with sharp optics mounted on a sturdy tripod, plus an SLR mount to attach a camera. To achieve the best results, modified DSLR cameras with special filters are used by serious astrophotographers.