Every category
Best picks, category by category
Every roundup below is hands-on tested and rechecked monthly. Pick a category to see the ranked picks.
Best Equatorial Mounts for Astrophotography
An equatorial mount is the foundation of any deep-sky imaging rig. It tracks the rotation of the sky on a polar-aligned axis so your exposures do not trail. We cover portable star trackers for travel through heavy-payload German equatorial mounts for full observatory setups, grading each on payload capacity, periodic error, polar-alignment ease, and how well they integrate with modern guiding software like PHD2 and NINA.
6 products comparedBest Autoguiders and Guide Scopes
Autoguiding corrects the small tracking errors every mount produces, keeping stars round through multi-minute exposures. A typical autoguiding system consists of a small guide scope or off-axis guider, a guide camera, and PHD2 software. We cover complete guiding rigs from budget 50 mm mini-guide-scope and ASI120MM combos through off-axis guiders for long focal-length systems, ranked by ease of setup, sensitivity, and compatibility with popular imaging controllers.
5 products comparedBest Light Pollution and Narrowband Filters
Light pollution and narrowband filters block the broad-spectrum glow from sodium and LED streetlights while passing the narrow emission lines that nebulae radiate. The right filter depends on your sky darkness, your camera type (one-shot color versus dedicated mono), and your target. We cover broadband LP reducers for mild skies through ultra-narrowband dual-band filters for city-center imaging, rated on transmission bandwidth, price, and how they perform with color OSC cameras.
5 products comparedBest Dew Heaters and Controllers
Dew forms on telescope lenses, corrector plates, and camera sensors whenever the optics cool below the dew point, ruining a night of imaging. Dew heaters wrap around the optical element and keep it a few degrees above ambient; a controller regulates power to prevent overheating or fogging from too much heat. We cover individual heater straps through multi-channel smart controllers with USB automation, graded on temperature regulation precision, number of output channels, and software integration.
5 products comparedBest Field Flatteners and Coma Correctors
Without a field corrector, most telescopes project stars that are sharp at center but blur or distort toward the corners of a large sensor. Field flatteners fix this for refractors and ED doublets by correcting field curvature. Coma correctors do the same job for fast Newtonian reflectors, eliminating the comet-shaped star distortion that plagues f/4 to f/6 Newtonians. We cover correctors from budget all-purpose options through premium matched accessories, ranked on correction quality, ease of spacing adjustment, and compatibility with popular sensor sizes.
5 products comparedBest Astrophotography Imaging Accessories
Beyond the mount and camera, a handful of accessories transform a frustrating imaging session into a productive one: an all-in-one imaging controller that replaces your laptop, an electronic autofocuser that nails critical focus automatically, and a smart power hub that keeps everything running cleanly through the night. We cover the most impactful additions to a deep-sky setup, ranked on reliability, integration with popular software ecosystems, and value.
5 products compared