The DWARFLab DWARF 3 is a compact, automated astrophotography instrument. It integrates a refractor telescope, an uncooled CMOS imaging sensor, a motorized tracking platform, an onboard computer for plate solving and live stacking, and a wireless connection to the Dwarflab mobile app into a single unit weighing 1.3 kilograms.
It does not require manual polar alignment in Alt-Az mode, manual star alignment, or a separate computer for capture. What it does require is time. Specifically, enough integration time for signal to emerge from noise given its small aperture size.
Key Specifications
| Parameter | Value |
|---|---|
| Aperture | 35 mm |
| Focal Length | 150mm |
| Sensor | Sony IMX678 Starvis 2 |
| Field of View (Tele) | 2.93° x 1.65° |
| Tracking | Alt-Az or EQ |
| Storage | 128GB |
| Connectivity | Wifi |
| Power | USB-C, Internal Battery |
The Sony IMX678 Sensor
The IMX678 is a back-illuminated CMOS sensor with Starvis 2 technology, which improves near-infrared sensitivity and reduces fixed-pattern noise compared to its predecessor. At 2 micrometers per pixel, it requires good seeing conditions and accurate tracking to resolve fine detail. Because it is uncooled, dark current increases with ambient temperature. Winter sessions produce noticeably cleaner data than summer sessions at the same settings.
Tracking Modes
Alt-Az Mode
The default mode. The telescope tracks the sky by moving on two axes — altitude and azimuth. This introduces field rotation over time, where the image frame appears to slowly rotate. To prevent star trailing from field rotation, sub-exposures must be kept at 15 seconds or shorter in Alt-Az mode. This limits per-frame signal and makes faint targets harder to reach.
Guided EQ Mode
EQ mode tilts the telescope to align one axis with Earth’s rotational axis, eliminating field rotation. This allows sub-exposures up to 60 seconds, quadrupling the signal per frame compared to Alt-Az. EQ mode requires a polar alignment procedure through the app before each session and a level surface. The alignment takes approximately 5 minutes and the app accepts deviations of up to 4 degrees, though 1 degree or less is recommended for 60-second subs.
Built-In Filters
| Filter | Passband | Best For |
|---|---|---|
| VIS | Full visible spectrum | Daytime photography, wide-field sky, Moon, Sun w/ sunfilter |
| Astro | 430-690nm broadband | Galaxies, star clusters, broadband nebulae |
| Duo-Band | H-alpha 656.3nm + OIII 500.7nm | Emission nebulae under light pollution or moonlight |
What the DWARF 3 Cannot Do
The DWARF 3 cannot replace a large-aperture telescope for faint or structurally complex targets that require significant resolving power. Planetary detail is beyond its focal length. Narrow-band imaging beyond H-alpha and OIII requires external filters. The sensor cannot be cooled, so thermal noise management depends entirely on ambient temperature and dark frame calibration.
These are not failures. They are the physical boundaries of a system designed to be portable, automated, and accessible. Understanding them determines how you plan sessions and set expectations for results.
Posts in This Section
DWARF 3 Smart Telescope: Is It a Toy or a Real Astrophotography Tool?
An honest assessment of what the DWARF 3 is, what it requires, and what determines results.
Why DWARF 3 Images Look Blurry or Noisy: Understanding Signal vs. Noise
Signal vs noise explained through real DWARF 3 data and session examples.
Frequently Asked Questions
What is the DWARF 3 smart telescope?
The DWARF 3 is a compact automated astrophotography instrument made by DWARFLab. It combines a 35mm aperture refracting telescope, a Sony IMX678 sensor, motorized Alt-Az and EQ tracking, onboard plate solving and live stacking, and wireless connectivity in a 1.3 kilogram unit that attaches to any standard camera tripod.
What sensor does the DWARF 3 use?
The DWARF 3 uses a Sony IMX678 Starvis 2 back-illuminated CMOS sensor with 8.3 megapixels and 2 micrometer pixel pitch. The sensor is uncooled, meaning its temperature fluctuates with ambient air conditions and internal heat generation. Dark frame calibration is required to manage the resulting thermal noise.
What is the field of view of the DWARF 3?
The DWARF 3 has a field of view of 3.17 degrees by 2.38 degrees. This is wide enough to frame most emission nebulae, galaxy pairs like M81 and M82, and large targets like the Andromeda Galaxy. It is too narrow for very extended objects like the full Orion Molecular Cloud complex.
Can the DWARF 3 image planets?
The DWARF 3 can show the shape of planets and the moons of Jupiter, but its 100mm focal length does not provide enough magnification to resolve planetary surface detail. It is optimized for wide-field deep-sky imaging rather than high-resolution planetary work.
What tracking modes does the DWARF 3 have?
The DWARF 3 has two deep-sky tracking modes. Alt-Az mode tracks on altitude and azimuth axes and limits sub-exposures to 15 seconds due to field rotation. Guided EQ mode tilts the telescope to align with Earth’s polar axis, eliminating field rotation and enabling 60-second sub-exposures. Sun Track mode is available for solar imaging.
