The blend of technology and curiosity has surely brought us to an interesting age, where anyone can capture the ethereal beauty of the cosmos right from a handheld device, the Smartphone. Smartphone astrophotography means leveraging the capabilities of your phone’s camera and some added tech to shoot spectacular shots of celestial bodies. But budding Smartphone astrophotographers often find various challenges. This article serves as a comprehensive guide to overcoming these hurdles and bringing out the allure of stars and galaxies onto your phone screen.
Forever evolving technology changes the game for astrophotographers. The continually rising efficiency and precision of smartphone cameras – with increasing megapixels, enhanced ISO sensitivity, and stabilization features – are proving to be promising components to capture starry skies. Yet there are challenges that confuse and complicate a photography process which should essentially be a fun and enjoyable hobby.
The very first challenge to address is often disgraced by shadows – ‘Light pollution’. Urban areas, street lights, house lights, and even moonlight, can wash out the faint light of stars and other celestial objects. To project this problem into oblivion, selecting the location is crucial. Remote areas, away from city lights, greatly enhance the chances of brighter and sharper images.
Regardless of the location, various apps, like ‘Dark Site Finder’, help to locate an area with minimal light pollution. Plan your shoot for the new moon phase when the moon is least bright, and carry along a light pollution filter so you can shoot from almost anywhere while gaining considerable brightness and contrast in the images.
The technical issue that usually bewilders beginners is capturing ‘Long exposure shots’ without getting star trails. The Earth’s rotation can result in star trails or movement in anything over about a 15 to 30-second exposure. To avoid this holistic journey of stars, leverage apps, such as Camera FV-5 or Slow Shutter Cam, that facilitate manual adjustment of shutter speed, ISO, and focus.
Use the 500 rule to determine the maximum shutter speed. Divide 500 by the focal length of the lens. For instance, using a typicaliPhone with a focal length of 28mm, you shouldn’t use an exposure longer than about 17 seconds.
Relatedly, ‘Achieving focus’ on a tiny spec of light millions of miles away can be a daunting task. Pushing your phone to its highest optical zoom will make the object blurry and pixelated. A pragmatic approach is exterior aid like telephoto lens attachments that can be clipped onto the camera and will help to bring out a more refined image.
Enhance this further with smartphone apps that overrule automation. Apps like NightCap Camera and ProCam 7 allow manual tweaking of settings, providing an impeccable focus on distant celestial bodies.
In the realm of capturing stellar shots, ‘Handling noise’ is an often under-appreciated facet. High ISO settings make the sensor more sensitive to light but also introduce a lot of noise. The methodology to combat this issue lies in ‘image stacking’. Multiple shots of the same frame reduce noise as you are multiplying the light information but the noise remains randomized.
Software like Sequator or DeepSkyStacker can quickly stack images and bring clarity to your shots. Low light cameras like the Google Pixel’s Night Sight or Huawei’s Night Mode also uses this very technique.
‘Capturing the larger objects’, planets, moon, sun necessitates a telescope. But how does one combine a smartphone and telescope? – ‘Digiscoping’. It involves lining up your phone’s camera with the telescope’s eyepiece, but achieving stability can be challenging. The market has solutions such as Gosky’s Universal Cell Phone Adapter Mount which can fix your phone with the eyepiece and help you shoot larger objects with precision.
Finally, it is crucial not to underestimate the power of ‘Post-processing’. APPs like Adobe Lightroom, SnapSeed, Astrophotography Light Pollution Removal (ALPR), and Photoshop Express offer essential features, from tweaking brightness, contrast, color tone to advanced editing such as noise reduction, detailing, and clarity.
Overcoming challenges in smartphone astrophotography can look as tedious as mapping the constellations. But once equipped with knowledge, the right tools, some patience, and a lot of practice, the entrancing cosmos is ready to fit into your palm-sized window, waiting to be explored, adorned, and flamboyantly captured on your smartphone.
