Astronomy

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DwarfLab’s new Dwarf 3 smartscope packs a powerful punch in a small unit.

Dwarf Lab’s Dwarf 3 smartscope.

In the past decade, amateur astronomy has witnessed nothing short of a revolution, as smartscopes have come to the fore. In half a century of skywatching, we’ve used just about every iteration of GoTo system available, starting with the now almost prehistoric ‘push-and-point’ AstroMaster units of the 90s. Strange to think, these were the hot new thing for telescopes in the 90s… though you still often had to perform a visual spiral search to actually find the target.

We recently had a chance to put Dwarf Lab’s new Dwarf 3 smartscope through its paces, and were impressed with what we’ve seen thus far. The small telescope even has personality: my wife said it actually looked like Johnny 5 from the 80s movie Short Circuit on start up (!)

We’ve also had the chance to use Unistellar and Vaonis units in the past, and were curious to see how the tiny Dwarf 3 would compare.

Smartscope Revolution

The specifications for the small unit are impressive:

The Dwarf 3 has two ‘eyes’: a 35mm (telephoto) and a 3.4mm wide-angle lens. The focal lengths for the two are 150mm (telephoto) and 6.7mm for the wide-angle (an effective equivalent of 737mm/45mm for the two).

The optics feature Sony IMX 678 Stravis 2 sensors, a CMOS chip with an effective 8.4x megapixel array, an upgrade from the IMX 415 used in the Dwarf 2.

Modern GoTo systems really put me out of a job…and that’s probably a good thing. I learned how to find things the ‘old way’ by starhopping and peering at a star chart under a red light. Dwarf 3 and other smartscopes use a method known as ‘plate-solving,’ looking at sections of the sky on startup and comparing them to a database versus the GPS position. The Dwarf Lab app features a digital planetarium view, to give even a novice user a common sense feel for the sky.

Dwarf 3 was spot on with pointing, and even maps out local obstructions on startup as no-go zones. Startup was quick, and the app is intuitive to use.

Using Dwarf 3 The Andromeda galaxy and satellite galaxies, as seen in the Dwarf Lab app.

You can use the planetarium sky feature with its grid overlay to manually aim the telescope at a given point in Right Ascension and Declination, handy for, say, if a new bright comet appears in the sky. Newer comets such as G3 ATLAS were in the updated database.

I’d rate the compactness of the unit and ease of use and portability for travel as a big plus. The unit only weighs 1.3 kilograms (2.8 pounds), and attaches to a standard camera tripod. Though the unit needs a stable, level site to operate, it never protested, balked or failed to deliver even when moderate vibrations were present.

Visible (VIS), Astro, and Dual band filters are built in to the optics, and the unit comes with a magnetic snap in place solar filter.

Solar viewing with the Dwarf Labs app.

The battery life for the telescope is advertised as 4-6 hours, and the unit has a generous 10000 mAh built-in battery. The Dwarf 3 also has an internal storage capacity of 128Gb (gigabytes). I used the telescope in sub-freezing January temperatures for about an hour during the Mars occultation, without a problem.

The unit will also output and support JPEG, PNG, TIFF and FITS files, though of course, larger FITS files will also take up more storage room.

The scope hooks to your phone via wifi/bluetooth, and even features an NFC ‘smart-touch’ connection capability. Though you need a wireless connection to control the telescope from your tablet or phone, the unit will work in the field as a standalone unit. That is, without a network connection.

Putting the Dwarf 3 Through Its Paces

On startup and initialization the scope gives two views: one wide and one telephoto, about 2.93x 1.65 degrees across. The Pleiades filled up the view nicely. The wide view works great as a finderscope for manually slewing to targets. The manual slew rate is variable as well.

The Pleiades (M45) with the Dwarf 3 telescope; the system easily captured some of the dusty reflection nebulae surrounding the young stars.

The telescope can be used in both terrestrial and astronomical applications. I could even envision the unit installed in a mini-‘bird house’ style observatory on a balcony or rooftop, allowing the user to sit inside and remotely observe the sky. These days, it’s rare that a new piece of tech inspires out-of-the-box thinking as to what might be possible, but the Dwarf 3 does just that.

Of course, with such a wide view, the Dwarf 3 really shines in deep-sky astrophotography. This is true even from brightly lit downtown areas, a real plus.

The Orion Nebula… imaged with the Dwarf 3 under the bright downtown lights of Bristol, Tennessee.

A sunglasses-looking filter magnetically snaps in place over both lenses for solar viewing. Like a standard rich-field refractor, the Dwarf 3 also delivers decent lunar views, but planets will appear as small dots.

Using a camera control app with Real Time Streaming Protocol capability will allow users to live stream the Dwarf 3 and record and broadcast live views. This would be handy for streaming eclipses or occultations live.

Dwarf 3: Deep-Sky Downtown Astronomy

What we like: The Dwarf 3 is very portable, and packs a lot in a small package. As I get older, I take a dim view of lugging gear outside, cobbling things together and contorting to view and tend to troubleshooting things in the dark, all for maybe an hour’s use. The Dwarf 3 is light and easy to deploy, allowing me to spend more precious time actually observing. Smartscopes also work great at public star parties, as I can simply narrate the wonders of what we’re seeing, while the GoTo system does all of the grunt work.

The Moon occults the Pleiades (a composite of two images).

What we don’t like: You have to remember to download the images before shutting down the unit… this a tiny step to remember for sure, in an otherwise outstanding product.

How does Dwarf 3 stack up against other smart telescopes out there? Well, the biggest difference is the price: at $499, it’s a fraction of the cost of most competitors out there. Increasingly, the argument that ‘yeah, but you could buy a (insert the name of a telescope/camera) for that price’ doesn’t hold up. Of course, it’s hard to beat the physics of optics in terms of resolution with smaller units. Increasingly, smaller units get around this by simply staring at faint light sources for longer, and letting deep sky images stack and build up.

Bottom line: The Dwarf 3 is definitely worth the price, either as a quick travel-scope for the seasoned observer, or a beginner scope to show users the wonders of the cosmos.

The post Review: Dwarf Lab’s New Dwarf 3 Smartscope appeared first on Universe Today.

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