Thousands of frames, and only the sharpest kept
A planetary camera works by a method that has no equivalent in ordinary photography: it records thousands of short frames, and software then discards all but the small fraction taken in the moments when the atmosphere happened to be still. The technique is called lucky imaging, and it is why a modest telescope can produce planetary detail that a single exposure could never hold. What follows from the method is which specifications matter. Frame rate comes first, because the whole approach is a numbers game — more frames in the window when the planet is well placed means more usable ones — and the frame rate that counts is the one achieved over the small region of interest the planet occupies, not the full-sensor figure in the headline. Pixel size has to be matched to the focal length of the telescope: pixels too large throw away resolution the optics delivered, pixels too small spread the same light thinner for nothing. The sensor is small by design, since a planet is small. Cooling matters much less here than it does for deep-sky work, because the exposures are measured in milliseconds and thermal noise has no time to build. Read the interface — USB 3 against USB 2 changes the achievable frame rate directly — and read what the camera threads into, and which capture software the maker actually supports. We compare camera type, sensor and pixel size, frame rate, region-of-interest capture, interface, cooling, filter thread, eyepiece fitting and software support.
8 MP sensor · 4K and high-frame-rate 1080p · 1.25 in · M28.5 × 0.6 thread · removable IR-cut filter · UVC and ASCOM · 110 g
FIBONAX's NOVA8M: an 8 MP 1.25-inch electronic eyepiece camera with 4K and high-frame-rate 1080p video, UVC viewing on Windows, macOS and Linux, an optional ASCOM driver, a removable IR-cut filter and a 110 g CNC aluminum body.
Best for: Lunar and planetary video, and showing a live view to more than one person
≈ $80
AR2020 CMOS, 20 MP, 5240 × 3840 · 1.4 µm pixels on 7.3 × 5.4 mm · ROI crop · USB-C · autoguiding · iCap
Celestron's NexImage 20: a color planetary camera with a 20 MP back-illuminated AR2020 CMOS (5240 × 3840, 1.4 µm pixels), region-of-interest cropping, USB-C, iCap software and autoguider support.
Best for: Lunar and planetary video from a long-focal-length telescope, with the arithmetic done in advance
≈ $450
IMX307 color, 1/2.8 in · 1920 × 1080 at up to 30 fps · 1.25 in · M28.5 × 0.6 filter thread · software named per system
SVBONY's SV105: a plug-and-play 1.25-inch color eyepiece camera with a 1/2.8-inch IMX307 sensor, up to 30 fps at 1920 × 1080, a filter thread and capture software named for each operating system.
Best for: Lunar and planetary video on a laptop, for someone who wants to know which program to download before buying
≈ $60
1.5 in IPS screen · 1080p video, 2 MP photos · 1000 mAh for up to 3 hours · 64 GB card included · Wi-Fi to 49 ft · fits 28–50 mm
A Wi-Fi electronic eyepiece with a 1.5-inch IPS screen, 1080p video and 2 MP photos, a 1000 mAh battery for up to 3 hours, a 64 GB card and a clamp for 28 to 50 mm eyepieces.
Best for: Recording what an eyepiece already shows, on any instrument, with the runtime and the card known in advance
≈ $80
8 MP sensor, 4K video, "64 MP" capture claimed · rotatable screen called 2.5 and 2.8 in · 2000 mAh · microSD to 512 GB · fits 23–60 mm
A 4K Wi-Fi electronic eyepiece camera with an 8 MP sensor, a rotatable IPS screen, a 2000 mAh battery, microSD support to 512 GB and a universal groove for eyepieces of 23 to 60 mm.
Best for: Recording what any eyepiece shows, on any instrument, with the screen turned to suit
≈ $160
7.05 MP IMX415 color, 1/2.8 in · 1.45 µm pixels · 1080p at 30 fps, 3264 × 2160 at 15 fps · USB 3.0 · 1.25 in
SVBONY's SV205: a 1.25-inch color planetary camera with a 7.05 MP Sony IMX415 sensor and 1.45 µm pixels, 30 fps at 1920 × 1080 in MJPG or 15 fps at 3264 × 2160 uncompressed, over USB 3.0.
Best for: Lunar and planetary video through a 1.25 in focuser, on a Windows, Linux or macOS laptop
≈ $100
Frame rate decides how many frames are captured during the brief moments when the seeing settles.
Pixel size, read with the instrument’s focal length, decides the detail recorded. It is the figure that counts in planetary work.
The published interface decides the real rate to the computer, and therefore the frame rate actually achieved.
Because the technique consists of stacking the best frames from a long sequence. The more frames, the more effective the sort.
The dimension of one photosite. With the instrument’s focal length it sets the image sampling.
A portion of the sensor read on its own. The function is published because it allows far higher frame rates.
It serves long exposures mainly. Its presence is published, and many planetary cameras do without it.
The published interface decides the available rate. A high frame rate over a slow interface is not obtained.
The published thread says what screws in directly. Outside that size, an adapter is needed.
The camera’s stated purpose, published by the maker. It points towards planetary or deep-sky work.
These cameras record over a link. This site publishes the interface and describes no acquisition chain.
In planetary work you are not after one image but thousands. Frame rate and interface decide how many frames, pixel size decides what each one holds.
The column is shown only when four instruments in five publish the figure. Below that, it would be comparing the absence of numbers.
| Model | Price | Camera type | Interface | Software support | Cooling |
|---|---|---|---|---|---|
| SVBONY SV105 (SF9159A) | $60 | Color USB eyepiece camera, plug and play, no driver | USB | Windows: SharpCap · Linux: AstroDMx Capture · Android: USB Camera · macOS supported · iOS and iPadOS not supported | None mentioned · low-light compensation stated |
| Telonixium WiFi eyepiece camera (V13) | $80 | Electronic eyepiece camera with screen, clamps over an existing eyepiece | Wi-Fi to a phone app, two devices, up to 49 ft · USB charging | Proprietary phone app | None |
| FIBONAX NOVA8M | $80 | Color USB electronic eyepiece camera | USB, UVC standard | UVC viewing on Windows, macOS and Linux without a dedicated driver · optional FIBONAX ASCOM driver for Windows astronomy software | None mentioned |
| SVBONY SV205 | $100 | Color USB planetary camera, plug and play, no driver | USB 3.0 · 1.2 m cable included | macOS: AstroDMx Capture · iOS and iPadOS not supported | None mentioned · low-light compensation stated |
| Telonixium 4K wireless eyepiece camera (SV-EP03) | $160 | Electronic eyepiece camera with rotatable screen, clamps over an existing eyepiece | Wi-Fi to the XDVPRO app (iOS, Android), two devices, up to 32 ft · USB charging | XDVPRO app with time-lapse, timed shooting and video | None |
| Celestron NexImage 20 (93707) | $450 | Color planetary camera · also usable as an autoguider | USB-C, with a USB-A to USB-C cable · no extra power supply | iCap capture software: gain, exposure, frame rate, white balance | Not published by the maker. |
$160 – $450
2 models
Telonixium 4K wireless eyepiece camera (SV-EP03), Celestron NexImage 20 (93707)
Specifications: manufacturer sheets for telescopes and observing optics and the matching Amazon product pages. Prices and availability: Keepa. Every figure in this table names its source.
Most recent revision in this category: November 7, 2026.
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.
