![Photograph the Milky Way: your first night out](https://cdn.slatesource.com/7/3/b/73b78aca-d668-4eb1-ab51-5578de265ad0.webp)

# Photograph the Milky Way: your first night out

- [Made in Slatesource](https://slatesource.com/@steph/photograph-the-milky-way-your-first-night-out)
- By [Steph](https://slatesource.com/@steph)
- Created on Oct 17, 2026

## The Galactic Core Is There Every Clear Night. Most Beginners Get Home Empty-Handed.

The reason is always the same: they set off without checking the moon phase, they try autofocus in the dark, and they use the 500 rule on a modern sensor and get streaky stars. None of those mistakes is hard to fix. This tutorial covers the whole process in order: picking the right night, driving to a dark site, nailing focus, setting the camera, and bringing one keeper image home. Every step draws from primary sources at Sentinel Mission and Galactic Hunter, both dedicated astrophotography guides. What you need: a camera with manual mode (mirrorless, DSLR, or even some bridge cameras), a lens of f/2.8 or faster, a tripod, and a phone with a dark-sky app. That is genuinely the complete list.

![](https://cdn.slatesource.com/7/3/b/73b78aca-d668-4eb1-ab51-5578de265ad0.webp)

National Park Service (CC0). The Milky Way spans the sky above a dark-sky site.

Best months (Northern Hemisphere)

May, June, July (core up all night)

Season window

Late February through early October

Starting camera settings

f/2.8, ISO 3200, 15 seconds, RAW

Difficulty

Beginner. One practice night is enough.

Minimum gear

Camera with Manual mode, f/2.8 lens, tripod, dark-sky app

## Step 1. Pick the Right Night

Three conditions have to line up before you leave the house. Miss any one and you come home with a grey smear. Moon phase is the biggest factor. The galactic core is roughly as bright as the full moon, so any moon above about 30 percent illumination will wash it out. Target the five days before and five days after the new moon each month. Check the phase on your camera app, PhotoPills, or any moon-phase site. Season matters because the galactic core only rises above the horizon from roughly late February to early October in the Northern Hemisphere. May, June and July are the peak months: the core is high enough to clear trees and hills, and it stays up for the whole dark part of the night. In October the window is short and the core sets early. Weather: no clouds, low humidity, low wind. The dew point and your camera temperature should stay apart by at least 5 degrees Celsius or the front element fogs. Check Clear Outside, Windy, or your local weather service for cloud-cover maps.

## Step 2. Find a Dark Site

Light pollution washes the Milky Way faster than almost anything else. You need a location rated Bortle 4 or lower on the light-pollution scale. Bortle 1 is the darkest sky on Earth; Bortle 4 is a rural site where you can see the Milky Way clearly with the naked eye. Most suburban spots are Bortle 6 or 7 and will not work. Use Light Pollution Map (lightpollutionmap.info) to find dark zones near you. The colours on that map match Bortle classes: the deep blue and grey zones are what you are looking for. A one-hour drive from a city is often enough to cross from Bortle 6 into Bortle 4. Once you have a candidate site, open PhotoPills or Stellarium to confirm the galactic core will actually be above the horizon and pointing in an open direction (not behind a hill or a row of trees) during your planned shooting window.

[Light Pollution Map: find Bortle-class dark sites near you (free, worldwide)](https://www.lightpollutionmap.info/?utm_source=slatesource)

## Step 3. Set Up the Tripod and Compose

Arrive at the site at least 30 minutes before you plan to shoot. Your eyes need 20 to 30 minutes to fully dark-adapt, and that time is wasted if you spend it staring at your phone screen. Use a red-light headlamp for any tasks that require light. Red light preserves dark adaptation; white light destroys it in seconds. Set the tripod on stable ground. Extend the legs fully and lock every joint. Tilt the head so the camera faces the part of the sky where the core will rise. In the Northern Hemisphere the galactic core rises in the south to south-east. Composition: include a foreground element. A lone tree, a rock formation, a mountain silhouette, or a tent with a warm light inside all give the viewer something to anchor to. The Milky Way as a pure sky shot without foreground context looks flat. Keep the horizon level: a crooked horizon is especially visible in night shots because the star field creates a strong reference.

## Step 4a. Focus in the Dark: How to Do It

Autofocus fails in low light. Every beginner who leaves AF on comes home with soft stars. Manual focus on a bright star is the only reliable method. Switch the lens to manual focus (the MF/AF switch on the barrel, or a menu setting on mirrorless bodies). Turn on live view. Point the camera at the brightest star or planet you can find (Jupiter, Venus, Vega, or Arcturus all work). Magnify the live-view image to maximum zoom (usually 10x on most cameras). Slowly turn the focus ring until the star becomes a single, tight point of light. A soft star looks like a small disc; a sharp star looks like a bright pinprick.

## Step 4b. Confirm Focus with a Test Shot

Take a test shot at ISO 6400 and 5 seconds. Zoom into the stars on playback at maximum magnification. If they are round and tight, your focus is set. If they are elongated or blurry, refocus and repeat. Once you have it right, tape the focus ring with gaffer tape so it cannot shift when you adjust the camera. One common trap: many lenses have an infinity mark on the focus ring, but the true infinity focus point is not always exactly at that mark. Always verify focus by checking a test shot rather than trusting the printed symbol.

## Step 5a. Set Aperture and Shutter Speed

Aperture: use the widest the lens opens. f/2.8 is the practical standard for this reason: it admits a lot of light and most lenses still perform well at the corners. f/1.8 or f/2.0 lets in more, but star edges can show coma (seagull shapes) at maximum aperture. Try f/2.8 first. Shutter speed: use the NPF rule, not the old 500 rule. The 500 rule was designed for film cameras. On a modern 24MP body with a 24mm lens, the 500 rule gives 21 seconds; the NPF rule gives about 12 seconds. That gap is the difference between round stars and short trails at pixel level. The simplified NPF formula: Shutter (seconds) = \[(35 x aperture) + (30 x pixel pitch in micrometers)\] divided by focal length in mm Pixel pitch is easy to look up for any camera body. At 24mm f/2.8 on a 24MP full-frame body, 12 to 15 seconds is the right starting range.

## Step 5b. Set ISO, White Balance and File Format

ISO: start at 3200. If the histogram peak sits pressed against the left wall (very dark), raise to ISO 6400. If it clips the right wall (light pollution), drop to ISO 1600. The goal is to land the histogram peak in the left half without it touching the edge. White balance: set manually to 3800K to 4200K. Auto white balance shifts toward green at night and makes the sky look wrong. Manual gives you clean colour to work with in editing. File format: RAW only. JPEG bakes in noise reduction that smears fine star detail before you ever open the image. RAW preserves the full data for editing.

Aperture

f/2.8 (widest the lens opens)

Shutter speed

Use NPF rule. 12 to 15s at 24mm, 24MP full-frame.

ISO

3200 (start here, adjust by histogram)

White balance

Manual, 3800K to 4200K

File format

RAW

[Sentinel Mission: How to Photograph the Milky Way (settings, planning, focus, 2026)](https://sentinelmission.org/blog/how-to-photograph-the-milky-way/?utm_source=slatesource)

## Step 6. Shoot and Check

Set the camera to a 2-second self-timer or use a remote shutter release. Pressing the shutter button by hand vibrates the tripod and blurs the shot at 15 seconds. Take your first full-exposure shot and check three things on playback: Stars: zoom to 100 percent, look at the corners. Round and sharp is correct. Elongated into short arcs means the shutter was open too long. Shorten by 2 to 3 seconds and reshoot. Histogram: the peak should sit in the left half but not against the left wall. Pressed left means raise ISO one stop. Touching the right wall means lower ISO. Composition: does the core sit where you wanted it? Is the foreground visible? Adjust and reshoot if not. Shoot at least 10 to 15 frames once the settings are right. More frames give you choices in editing and images to stack for reduced noise later.

## Step 7. One Post-Processing Step Worth Doing

Stacking multiple exposures is the biggest single quality improvement available in Milky Way photography, and it requires no paid software. Sequator (Windows) and Siril (Windows/Mac/Linux) both do it free. The idea is simple: stars move between frames, so the software aligns all the star positions and averages them. Random noise averages out; the actual signal (your Milky Way) stays. Five stacked frames look noticeably cleaner than any single frame. In Sequator: open the program, add your frames as star images, add a sky background sample (a small patch of dark sky with no stars from your first frame), click Start. It runs in a few minutes and outputs a 16-bit TIF. From there, open the TIF in any editor (Lightroom, Darktable, RawTherapee) and make two adjustments: lift the shadows gently to reveal the faint dust lanes in the core, and reduce haze (Lightroom Clarity slider at around plus 30) to make the structure stand out.

A polar star or a planet works better than a faint star for initial focus. Jupiter and Venus are bright enough to see before full dark adaptation and can be magnified to a clear disc on live view, which makes confirming peak sharpness easier than working with a point of light.

Dew on the front element of the lens is the most common reason for a session that looks perfect on the histogram but delivers blurry images. Check the front element every 20 to 30 minutes. A lens warmer (a USB-powered strip that wraps the barrel) costs about $15 and eliminates this problem entirely on humid nights.

[Galactic Hunter: 500 Rule vs NPF Rule (formula, comparison, worked examples)](https://www.galactic-hunter.com/post/500-rule-vs-npf-rule?utm_source=slatesource)