How to get into astrophotography: a beginner's guide to the gear, the targets and your first night

4 November 2026 · 8 min read

Astrophotography looks like it needs an observatory. It doesn't. You can photograph the Milky Way this week with a camera you own, and the Orion Nebula this winter with a small tracking mount and a lens. What it does need is patience, a little planning and money spent in the right order.

The short answer: start with a camera and a short lens on a star tracker, learn to stack your images, then add a small refractor (250–450 mm focal length) on a solid equatorial mount. Buy the mount before the telescope, keep the focal length short for your first year, and pick big, bright targets.

The rest of this guide explains why, and what each step involves.

The four kinds of astrophotography

"Astrophotography" covers four quite different hobbies. Knowing which one you want saves a lot of money.

Planetary imaging is a different craft: you record thousands of very short video frames through a long telescope and keep the sharpest. The gear that suits it (a big Schmidt-Cassegrain at 2000 mm or more) is the worst choice for faint nebulae. This guide, and RigTonight, are about deep-sky imaging: the faint, large objects that need long exposures.

The path most beginners follow

Most people who stick with the hobby go through roughly the same stages. You can skip ahead, but each stage teaches something the next one depends on.

1. Camera on a tripod. Ten to twenty-second exposures of the Milky Way with a wide lens at its widest aperture. You learn manual focus on stars, exposure and finding a dark site.
2. Camera on a star tracker. A small motorised mount follows the sky, so a 50–135 mm lens can take one- to three-minute exposures. You learn polar alignment, stacking and processing. Andromeda, Orion and the Pleiades are all within reach.
3. Small refractor on an equatorial mount. A 50–80 mm apochromatic refractor at 250–450 mm, a dedicated astro camera or your DSLR, and a computer or controller to run the night. Now you're doing deep-sky imaging properly.
4. Guiding, filters and cooling. A guide scope and guide camera correct the mount's small errors, so you can take longer exposures. A cooled camera gives cleaner data. Dual-band or narrowband filters let you image nebulae from a city.
5. Mono camera, more focal length, or both. A monochrome camera with a filter wheel, or a longer telescope for small galaxies. This is where the hobby gets expensive, and where a rig that doesn't fit together costs the most.

The best beginner astrophotography setup has example rigs for stages 2 to 4, with what each costs.

How deep-sky imaging works

Faint objects need a lot of light, far more than one photo can collect. So instead of one very long exposure, you take dozens or hundreds of shorter ones, called subs or subframes (usually 30 seconds to 5 minutes each), and combine them in software. This is stacking. Noise is random from frame to frame but the nebula isn't, so averaging many frames leaves the signal and smooths the noise. Four hours of subs beats one hour, and one hour beats ten minutes.

Three more ideas carry the whole hobby:

• Tracking. The sky turns about 15 arcseconds every second. To keep stars round for minutes at a time, the camera has to turn with it, around an axis aimed at the celestial pole. That's what the mount does, and why polar alignment matters.
• Calibration frames. Flats (photos of an evenly lit screen) remove dust shadows and vignetting. Darks remove the camera's own heat noise. They're quick to take and make processing much easier.
• Stretching. A stacked image looks almost black, because the faint detail is squeezed into the darkest few percent of the brightness range. Processing "stretches" it out. This is normal and is where the picture appears.

What you need, in order of importance

1. A tracking mount. It matters more than the telescope. A wobbly or overloaded mount ruins every frame, however good the optics. Start with a star tracker for lenses, or an equatorial mount for a small telescope, and stay well under its payload rating. See Star tracker or equatorial mount? and How much can your mount really carry?.
2. A camera. A DSLR or mirrorless camera you already own is a fine start. A dedicated astro camera, especially a cooled one, gives cleaner data and is easier to run from a computer. See DSLR or astro camera?.
3. Optics. A camera lens of 50–200 mm, or a small refractor of 250–450 mm, is the forgiving place to begin. Short focal lengths hide tracking errors and frame the big, bright targets. See Choosing a first telescope for astrophotography.
4. Software. Free programs such as Siril, DeepSkyStacker and GraXpert stack and process your images. Capture is run by the camera itself, a laptop, a mini PC or a small controller. See Stacking and processing for beginners.
5. The small things. A dew heater, a Bahtinov focusing mask, spare batteries, and a red torch. They decide whether a clear night actually produces data.

Everything after that (guiding, filters, a cooled mono camera, a filter wheel) is an upgrade, not a requirement. How to build an astrophotography rig explains how to choose those parts so they work together.

What it costs

Rough totals in US dollars, new, for the whole kit:

• Nightscapes: almost nothing beyond a camera and tripod.
• Tracked wide-field: about $400–700 on top of a camera you own.
• A first telescope rig: about $2,500–4,500 for a small refractor, a cooled astro camera, an equatorial mount, a controller and power.
• A guided, filtered rig: $5,000 and up.

Used gear is common and holds its value, especially mounts and refractors. How much does astrophotography cost? breaks each budget down part by part.

The beginner traps

• Too much focal length too soon. A long telescope magnifies every tracking error. Many people who start with a big Schmidt-Cassegrain end up buying a small refractor anyway.
• An overloaded mount. The number on the box is not your imaging limit.
• Parts that don't fit together. Back focus, adapters, filter sizes and controller support catch almost everyone. The rig builder checks all of these for you.
• Shooting under a bright moon. Galaxies and reflection nebulae need dark nights.
• Too little total exposure. Twenty minutes on a faint nebula gives a noisy picture, however good the gear.

Beginner astrophotography mistakes covers twelve of these, and how to avoid each one.

Your first targets

Start big and bright. Each of these looks good from a suburban garden with a short focal length:

• Orion Nebula (M42), winter. The easiest nebula of all. How to photograph it.
• Andromeda Galaxy (M31), autumn. Big enough for a 135 mm lens. How to photograph it.
• Pleiades (M45), autumn and winter. Bright blue stars, with dust under dark skies. How to photograph it.
• North America Nebula, summer. Glowing red hydrogen in Cygnus. How to photograph it.

What to image each season has a longer list, and the Targets tab shows how each of 520 objects frames in your own camera.

Your first night

You need three things at once: a clear sky, real darkness, and your target well above the horizon. For galaxies the moon should also be down or thin. That combination is rarer than it sounds, so plan ahead:

1. Check the cloud forecast from more than one weather model. See Is tonight good for astrophotography?.
2. Make sure it's astronomically dark, not just after sunset. See When is it dark enough?.
3. Check the moon. See Astrophotography and the moon.
4. Set up while it's still light: level the tripod, balance the mount, connect everything.
5. Polar align, focus on a bright star, frame the target, and start taking subs.
6. Take flats before you move anything.

Your first night of astrophotography walks through every step, with exposure settings that work. RigTonight's Tonight tab puts the forecast, darkness, the moon and the best targets for your rig on one screen.

How long until your pictures look good?

Honestly: a few months. The first night usually ends with a handful of slightly trailed, slightly out-of-focus frames, and that's normal. Most of the improvement comes from repetition: faster setup, better polar alignment, more hours on one target, and processing practice on the data you already have. Re-processing an old data set after six months is one of the best ways to see how far you've come.

Questions beginners ask

Can I start with my phone? For the Moon and bright nightscapes, yes, especially with a phone's night mode on a tripod. For nebulae and galaxies, a camera with interchangeable lenses on a tracker is a much better start.

Do I need a telescope? Not at first. A 135 mm or 200 mm lens on a tracker frames Andromeda, Orion, the Pleiades and dozens of Milky Way nebulae beautifully.

Can I use a telescope I bought for visual observing? Sometimes. A Dobsonian doesn't track the sky the right way for long exposures, and most visual reflectors can't bring a camera to focus. A small refractor often can, with a field flattener.

Do I need dark skies? No. Emission nebulae can be imaged from a city with a dual-band or narrowband filter. Galaxies do much better from dark skies. See the Bortle scale explained.

Is a cooled camera worth it? For a first year with a DSLR, no. Once you buy a dedicated astro camera, cooling is the upgrade most people are glad they paid for, especially in summer.

Where to go next

When you know what you want to shoot, open the rig builder, add the gear you own or are thinking of buying (anything not in the catalog can go in as your own part), and it'll tell you what works together and what to shoot tonight.