# Best Autoguiders for Pinpoint Long Exposures (2026) Source: https://stargazernest.com/best/autoguiders Updated: 2026-09-15 Publisher: Stargazer Nest. Our score is an editorial rating out of 10 (fit 35%, features 25%, build 20%, value 20%), not a customer rating. Method: https://stargazernest.com/how-we-research#our-score An autoguider watches a star and sends tiny corrections to your mount, canceling the small tracking errors that turn stars into streaks during long exposures. A typical setup pairs a small, sensitive guide camera with either a separate guide scope or an off-axis guider that pulls light from the main optics. Key points are the camera's sensitivity and pixel size, the guide scope's focal length relative to your imaging scope, and that the mount has an autoguider port or pulse-guiding support over USB. Autoguiders suit deep-sky imagers pushing past exposures of a minute or two, where even a good mount drifts. A practical tip: a compact guide scope and small guide camera handle most refractor and short-focal setups, while long focal lengths above about 1000mm benefit from an off-axis guider, which shares the main optics and avoids the flexure that ruins guiding between two separate tubes. ## Picks ### 1. ZWO ASI120MM-Mini 1.2MP Monochrome Astronomy Camera 1280x960 CMOS USB2.0 Type-C ST4 Port Our score: 8.9/10 (Fit for the job 10/10 · Features and specs 8/10 · Build and materials 8/10 · Value 9/10) ZWO ASI120MM-Mini 1.2MP monochrome camera, 1280x960 CMOS, USB2.0 Type-C with ST4 port for autoguiding. Pros: - ST4 port allows direct guide pulses to mounts without an ASCOM connection - Monochrome 1280x960 sensor is sensitive enough to find guide stars easily - Mini body slips into guide scopes and finder brackets Cons: - USB2.0 speed is slow for planetary imaging compared with USB3 cameras - Small sensor field can make finding guide stars harder in sparse areas Details: https://stargazernest.com/product/B07FM9DXYC ### 2. ZWO ASI174MM-MINI 2.1 MP CMOS Monochrome Astronomy Camera with USB 2.0 Autoguider Our score: 8.7/10 (Fit for the job 10/10 · Features and specs 8/10 · Build and materials 8/10 · Value 8/10) ZWO ASI174MM-MINI 2.1 MP CMOS monochrome camera with USB 2.0, built as a sensitive autoguider. Pros: - Larger sensor than entry mini guide cams finds guide stars more easily - Monochrome sensor offers high sensitivity for off-axis guiding - Mini form fits compact guide scopes and OAG setups Cons: - Costs more than basic guide cameras that handle simple guiding fine - USB 2.0 is not suited for high-speed imaging Details: https://stargazernest.com/product/B07C97T64Q ### 3. SVBONY SV165 Mini Guide Scope 30mm F4 Finder for ZWO QHY Orion Auto Guiding Cameras Deep Sky Our score: 8.6/10 (Fit for the job 9/10 · Features and specs 8/10 · Build and materials 8/10 · Value 9/10) SVBONY SV165 mini guide scope, 30mm F4 finder for ZWO, QHY and Orion autoguiding cameras in deep-sky setups. Pros: - 30mm F4 optics give a wide field for easy guide star selection - Compatible with ZWO, QHY and Orion guide cameras - Doubles as a finder scope to save weight on the telescope Cons: - Guide camera is not included, so it needs a separate purchase - Short focal length gives less guiding precision for long focal length imaging Details: https://stargazernest.com/product/B088D37YMZ ### 4. ZWO ASI120MM-MINI (Mono) 1.2 MP CMOS Monochrome Astronomy Camera with USB 2.0 Our score: 8.3/10 (Fit for the job 9/10 · Features and specs 7/10 · Build and materials 8/10 · Value 9/10) ZWO ASI120MM-MINI mono 1.2 MP CMOS monochrome astronomy camera with USB 2.0 for guiding. Pros: - Proven guide camera widely supported by PHD2 and other guiding software - Compact form fits neatly into mini guide scopes - Monochrome sensor maximizes sensitivity for faint guide stars Cons: - Check guiding connection options if you plan to autoguide - USB 2.0 limits its use for high-speed planetary capture Details: https://stargazernest.com/product/B0CJC1XGXW ### 5. ZWO ASI120MM Mini (Mono) USB 2.0 Monochrome CMOS Camera for Planetary Imaging and Guiding Our score: 8.3/10 (Fit for the job 9/10 · Features and specs 7/10 · Build and materials 8/10 · Value 9/10) ZWO ASI120MM Mini mono USB 2.0 monochrome CMOS camera for planetary imaging and guiding. Pros: - Mini form factor fits standard small-barrel guide scope drawtubes - Monochrome CMOS sensor is ideal for sensitive guiding - Can also capture basic lunar and planetary images Cons: - USB 2.0 limits frame rates for serious planetary work - Small sensor offers a narrow field for guide star selection Details: https://stargazernest.com/product/B07HR9ZV3W ### 6. SVBONY SV305M Pro Astronomy Camera 2MP USB3.0 Telescope and Guide Camera for Astrophotography Our score: 8.0/10 (Fit for the job 8/10 · Features and specs 8/10 · Build and materials 7/10 · Value 9/10) SVBONY SV305M Pro 2MP USB3.0 camera for telescope imaging and autoguiding in astrophotography. Pros: - USB3.0 speed supports both guiding and planetary video capture - Monochrome version gives good sensitivity for guide stars - Budget-friendly dual-purpose camera for guiding now and planets later Cons: - Software support may be less mature than ZWO's ecosystem - Small sensor limits deep-sky imaging uses Details: https://stargazernest.com/product/B099DPB1S1 ### 7. ZWO ASI120MM 1.2 Megapixel USB 2.0 Monochrome Astronomy Camera for Astrophotography and Guiding Our score: 7.8/10 (Fit for the job 8/10 · Features and specs 7/10 · Build and materials 8/10 · Value 8/10) ZWO ASI120MM 1.2 megapixel USB 2.0 monochrome astronomy camera for astrophotography and guiding. Pros: - Doubles as a guide camera and a basic planetary imager - Monochrome sensor is sensitive for guiding and filtered imaging - Long-standing model with extensive community support Cons: - Larger body than the Mini version for guide scope mounting - Older USB 2.0 design is slow for modern planetary imaging Details: https://stargazernest.com/product/B00CB2EAS8 As an Amazon Associate I earn from qualifying purchases.