Can you take a photo through a telescope?
Yes. Holding a phone camera up to the eyepiece is called afocal photography, because the telescope and the camera lens work together to form the image. A phone camera can capture the view through the eyepiece, and it is one of the easiest ways to begin astrophotography with a telescope you already own. Results depend on the target, and bright objects like the Moon work best.
What you need
- A telescope on a stable mount, set up and pointed at your target (how to use a telescope).
- A low- to medium-power eyepiece. A wider view is easier to align and focus than very high magnification.
- A phone. Most modern smartphones can work.
- A phone adapter (optional but strongly recommended). It holds the phone steady over the eyepiece. Handheld shots are possible but harder.
- Optionally, a remote shutter or the phone’s timer, to avoid shaking the telescope when you tap the screen.
Step by step
- Point and center the target. Use your finder (how to use a finderscope) and a low-power eyepiece to center the object, and focus visually first.
- Attach the phone. Fit the adapter to the eyepiece, then position the phone so its camera lens sits directly over the eyepiece lens. If you hold it by hand, keep the camera close and as parallel to the eyepiece as you can.
- Open the camera app and look for the image. At first you may see a small bright circle surrounded by black. Move the phone slightly until the circle fills the screen. A little zoom on the phone can remove dark edges.
- Focus. Tap the screen on the object so the phone focuses, then fine-tune with the telescope’s focuser.
- Set exposure. Tap and hold on the object to lock focus and exposure if your phone allows it, and lower the brightness slider so the Moon does not look washed out.
- Take the photo or a short video. Use the timer or a remote to avoid vibration.
- Repeat and review. Take many shots. Atmospheric turbulence changes from second to second, so some will be sharper.
Photographing the Moon
The Moon is the easiest target. It is bright, so short exposures freeze motion, and features like craters and the terminator (the line between light and shadow) show well. Partial phases often look better than a full Moon, because shadows add depth. Reduce the exposure so bright areas keep detail; a moon filter can also help.
Planets and other bright objects
Planets are small, so they look tiny in a single phone photo. A common approach is to record a short video and combine the best frames with free stacking software, which can improve detail. Jupiter with its moons (Jupiter from a home telescope), and Saturn with its rings (finding Saturn), are possible with a decent telescope and steady air, although expect a small disk rather than a detailed portrait.
What not to expect
Faint objects such as nebulae and galaxies are hard. Phone exposures are short, and without a tracking mount the object drifts out of view. A phone at the eyepiece will generally not show faint objects well. For these, people move to a dedicated camera and tracking mount, as in astrophotography with a telescope and DSLR. If you are curious about that direction, our night sky photography guide explains the basics of exposure and stacking, and the star trail photography article shows a different way to use a camera and tripod.
Tips for better results
- Let the telescope cool to outdoor temperature so the image is steadier.
- Keep the phone lens clean.
- Use the lowest magnification that shows what you want.
- Try the phone’s manual or “pro” mode, if it has one, to control ISO and shutter speed.
- Avoid heavy digital zoom, as it lowers quality.
- A motorized mount makes it much easier to keep an object centered (see telescope tracking explained).
Troubleshooting
- Black circle with a tiny view: move the phone closer to the eyepiece and center it, or zoom slightly.
- Blurry image: refocus with the telescope focuser, check for shake, and wait for steadier air.
- Bright blob with no detail: lower the exposure.
- Object keeps drifting out of the frame: nudge the telescope frequently, or use a motorized mount.
- Reflections or glare: shade the eyepiece and phone from stray light.