Imaging
A camera with an ordinary lens can photograph the Milky Way, constellations and the largest nebulae. What it needs is something that turns at the rate of the sky. A star tracker does that, on a photo tripod, for a few hundred dollars.
On a fixed tripod, stars trail after a few seconds with a long lens and a few tens of seconds with a wide one. A tracker turns the camera with the sky, so exposures of minutes become possible.
The Star Adventurer 2i Pro Pack is the established choice, with Wi-Fi control and an equatorial base, though its US listing omits the payload. OGST’s single-axis tracker publishes a 4 kg payload and ±10 arcseconds of periodic error. OrionU’s 500 g tracker carries 2 kg off-axis without counterweights. SLIK’s ECH-630 runs 20 hours on AA batteries with four speeds.
Add camera, lens and ball head. A tracker loaded near its limit needs a better polar alignment to reach the same exposure length.
Each tracker uses a method: a polar scope, a pointer or a phone app. The better the alignment, the longer the exposure.
K&F Concept’s Natural Night filter screws onto a 67 mm camera lens and blocks the 580 to 610 nm band of sodium lighting. It does little against white LEDs.
A wide lens on a fixed tripod, and the ground in the frame.
A series of exposures accumulated. Only the tripod and power matter.
Exposure lengthens and the sky stops moving. The equipment changes category.
| What you want | What is needed | What is not |
|---|---|---|
| Sky and landscape | A tripod | A telescope |
| Star trails | Power | A tracker |
| Long exposures | A tracker | Aperture |
| Detail | A telescope | Another lens |
Night photography equipment suffers from cold and from dew, like an instrument. Batteries and lenses are the two weak points.
This site publishes stated specifications and describes no photographic session.
Motorized tracker · Wi-Fi with the SAM Console app · deluxe equatorial base · fits photo tripods · wide-field, time-lapse and telescopic use
Sky-Watcher's Star Adventurer 2i Pro Pack: a motorized portable tracking platform with Wi-Fi control from the free SAM Console app and a deluxe equatorial base, for Milky Way, eclipse, time-lapse and small-telescope use on a photo tripod.
Best for: Camera-based night sky photography on an existing photo tripod
≈ $469
±10 arcsec periodic error over 10 min · 1:101.25 gear train · 1.4 kg carrying 4 kg (8.8 lb) · Wi-Fi, open source · three polar alignment methods
OGST's single-axis tracker: a 1.4 kg mount carrying 4 kg, with a stepper motor and 1:101.25 gear train for ±10 arcseconds of periodic error over 10 minutes, open-source Wi-Fi control and polar scope, phone and star-pointer alignment.
Best for: A camera and a 300 mm lens under a dark sky, for someone who wants the tracking error on paper
≈ $326
4 kg (8.8 lb) axial, 2 kg (4.4 lb) lateral without counterweights · 500 g (17.6 oz) · ESP32 on 5 V · star pointer to −10 °C (14 °F)
OrionU's dual-screw steel-shaft star tracker: a 500 g carbon-fiber PETG body carrying 4 kg axially and 2 kg laterally without counterweights, with a high-brightness polar pointer, ESP32 control on 5 V power and a 3/8-inch tripod fitting.
Best for: A camera and short lens carried a long way, where every gram and every counterweight counts
≈ $122
Sidereal, lunar, solar and time-lapse speeds · 20 hours on 4 AA · 22.4 oz in the bullets, 23 oz in the title · LCD menu
SLIK's ECH-630: a compact motorized star tracker with sidereal, lunar, solar and time-lapse speeds, an LCD menu and up to 20 hours on four AA batteries, about the size of a 24-70 mm lens, with an optional SMH-250 polar head.
Best for: Backcountry night photography where batteries must be replaceable and the speed switchable
≈ $440
Blocks about 580–610 nm · 67 mm (2.64 in) camera-lens thread · Japanese optical glass, 28-layer nano coating on both faces · 68 g
K&F Concept's Nano-X Natural Night filter: a 67 mm camera-lens filter that blocks sodium streetlight wavelengths of about 580 to 610 nm, in Japanese optical glass with a 28-layer coating on both faces.
Best for: Wide-field tracked photography with a 67 mm camera lens under sodium-lit skies
A common rule is about 500 divided by the lens focal length in seconds on a full-frame camera: about 20 seconds at 24 mm, 10 at 50 mm. Beyond that, stars trail.
A wide or normal lens, 14 to 50 mm, at a wide aperture. Longer lenses ask for a better tracker and polar alignment.
Under sodium streetlights, yes. Under white LED lighting, much less, because LEDs emit across the spectrum.
For observing: Camera-based night sky photography on an existing photo tripod
Where it is strong: Wi-Fi control with Sky-Watcher's free SAM Console app
Where it is weak: Payload not published on the US listing
For observing: A camera and a 300 mm lens under a dark sky, for someone who wants the tracking error on paper
Where it is strong: Periodic error published: ±10 arcsec over 10 minutes
Where it is weak: Body material given two ways (ABS/carbon and PETG)
For observing: A camera and short lens carried a long way, where every gram and every counterweight counts
Where it is strong: Axial and lateral loads published
Where it is weak: Tracking rates and accuracy not published
For observing: Backcountry night photography where batteries must be replaceable and the speed switchable
Where it is strong: Four tracking speeds, including time-lapse
Where it is weak: No payload figure
For observing: Wide-field tracked photography with a 67 mm camera lens under sodium-lit skies
Where it is strong: Blocked band published: about 580 to 610 nm
Where it is weak: Camera-lens filter: does not fit a telescope eyepiece
The models above are taken from the catalog of this site. Specifications are the ones the maker publishes and the ones on the Amazon page; prices are the Keepa reading for the date shown, and both change. Ranking uses declared specifications, the weight of stated strengths against stated limits, and price. Nothing here has been pointed at the sky by us, and the page makes no such claim.
Last checked on
Any figure written into the body of this page was true on the day it was written. The amount shown next to each instrument is requested from the retailer as the page loads, and it is that amount, not the text, that stands.
