HSL 70mm Aperture Refractor Telescope
$129.99 price checked August 2026
If you need a portable telescope that fits into a backpack for travel, this is the one to price-check.
What the HSL Refractor Telescope Is, and Who For
The HSL 70mm Aperture Refractor Telescope is for beginner astronomers who need to resolve lunar craters and Jupiter’s moons clearly, as its 70mm aperture meets the minimum diameter required for those specific observations.
Many beginner astronomers struggle with blurry images of the moon because their equipment lacks the aperture to resolve distinct craters and surface details. This lack of clarity often makes it difficult to distinguish between a toy and a functional piece of optical equipment.
The HSL 70mm Aperture Refractor Telescope solves this by providing a 70mm aperture, which is the specific threshold required to clearly see lunar features and the moons of Jupiter. It also includes a 5×24 viewfinder scope and three premium eyepieces to help you position and magnify celestial objects.
We selected this model from the refractor telescope options we evaluated based on its balance of aperture and portability. This review is for upgraders looking for a more capable entry-level telescope that includes a smartphone adapter and wireless camera remote.
How RecommendedOptics picked: we started from the 119 most-reviewed refractor telescope listings in our retail dataset, removed duplicates, accessories and off-category products, and 82 qualified. This product is one of 15 from that pool chosen for a full review. Our scores blend buyer satisfaction (60%), price position against comparable products (25%) and rating volume (15%). Specifications come from manufacturer listings and ratings from verified Amazon buyer reviews (data checked August 2026).
The Short Answer on the HSL Refractor Telescope
Best for: you need a compact, portable refractor telescope that can be carried in a backpack for travel.
The HSL 70mm Aperture Refractor Telescope is a strong choice at $129.99.
- Pro: The 70mm aperture clears the 70mm threshold required to resolve lunar craters and Jupiter’s moons clearly.
- Pro: It includes three premium eyepieces providing up to 100X magnification for lunar and Earth objects.
- Pro: The included 5×24 viewfinder scope with crosshairs simplifies the process of positioning celestial objects.
- Con: The f/5 7 focal ratio requires high-quality optics to manage chromatic aberration, which may limit high-magnification clarity.
- Con: The 400mm focal length limits the usable magnification range compared to longer focal length refractor options.
Don’t buy this if: you require an apochromatic (ED) lens system to eliminate color fringing on bright objects.
Price assessment: $129.99 is a fair price for a telescope that includes a full shooting configuration and a dedicated carrying backpack.
RecommendedOptics score: 7.8/10 (data-driven – see “How we picked” above)
If you are shopping for children, see our guide to the best refractor telescope for kids.
For those on the move, view the best refractor telescope for travel options here.
The Numbers on the Spec Sheet
| Aperture | 70mm |
| Focal Length | 400mm |
| Focal Ratio | f/5.7 |
| Weight | 5.7 pounds |
| Dimensions | 17.5 x 12.4 x 6.5 inches |
| Included Eyepieces | 20mm, 10mm, 4mm |
| Viewfinder | 5×24 with crosshairs |
The 70mm aperture on the HSL Refractor Telescope clears the 70mm threshold required to resolve lunar craters and Jupiter’s moons clearly.
Performance in Practical Terms
High Magnification Lunar Viewing
The HSL 70mm Aperture Refractor Telescope provides 100x magnification through its 4mm eyepiece. Because the 70mm aperture clears the 70mm threshold required to resolve lunar craters and Jupiter’s moons clearly, you can view surface details on the moon and distinct features on planets like Jupiter and Saturn.
To maintain steady images at 100x magnification, you must ensure the multi-angle adjustable tripod is fully leveled. High magnification on a portable frame requires a stable base to prevent the image from shaking or drifting off-target during lunar observation.
Portable Design for Kids
The HSL Refractor Telescope includes a lightweight frame and a custom backpack for transport. This design allows you to take the telescope to different locations without the weight of a larger observatory-grade unit limiting your mobility.
The multi-angle adjustable tripod provides the necessary stability for different viewing angles while remaining compact enough for travel. You can set up the unit quickly in various environments to explore the stars and moon away from home.
Luxury Shooting Configuration
The HSL 70mm Aperture Refractor Telescope includes a smartphone adapter and a wireless camera remote to capture images through your phone screen. This configuration allows you to document celestial objects without needing to manually steady the telescope while framing a shot.
The included solar film and moon filter support specific viewing conditions for different celestial bodies. Use the moon filter to reduce glare during lunar viewing and the solar film to safely observe the sun’s surface.
How the HSL Refractor Telescope Compares to Alternatives
The HSL Refractor Telescope ranks first on buyer ratings among the refractor telescope options we compared, holding a 4.3 score from 163 ratings.
- The HSL Refractor Telescope costs the same price as the ESSLNB Telescope 700X70mm with K4/10/20 Eyepieces and the 80mm HD Refractor Telescope.
- The 102mm Aluminum Tube Achromatic Refractor offers a larger 102mm aperture compared to the 70mm aperture of the HSL Refractor Telescope.
- The POPULAR SCIENCE AstroMaster 80mm Refractor Telescope is priced at $129.49, making it $0.50 cheaper than the HSL Refractor Telescope.
- The Dollate 70mm Refractor Telescope is the most affordable option at $121.99, while the HSL Refractor Telescope is priced at $129.99.
If you prioritize a larger aperture for more light gathering than the 70mm HSL Refractor Telescope provides, choose the 102mm Aluminum Tube Achromatic Refractor instead.
Regarding how this compares to a 90mm telescope, the HSL Refractor Telescope features a 70mm aperture which clears the 70mm threshold required to resolve lunar craters and Jupiter’s moons clearly. Because the provided data does not list the specific light-gathering capabilities of a 90mm model, you should check the specific aperture and focal ratio of a 90mm unit to determine the exact increase in magnification and resolution over this 70mm model.
You can also read our full review of the AstroMaster LT 70AZ to see its performance.
What the Price Buys
The HSL 70mm Aperture Refractor Telescope is priced at $129.99. Similar refractor telescope products we compared it against range from $121.99 to $129.99, placing this model $2 above that average. At this price point, you receive a 70mm aperture that clears the 70mm threshold required to resolve lunar craters and Jupiter’s moons. You also get a 400mm focal length at an f/5.7 ratio, which provides a compact profile for a beginner-level refractor. While you gain the 70mm aperture and a 5×24 viewfinder, you are choosing a model that sits at the entry point of the 100mm to 130mm aperture reference tier for serious amateur astronomy.
The HSL Refractor Telescope is the right buy if you need a portable kit that includes a smartphone adapter and solar film for under $130. Regarding the smartphone adapter, the included data does not specify the sensor’s resolution or the mounting stability, so you should check if the adapter supports your specific phone model’s dimensions. If you require high-contrast imaging that eliminates color fringing, you may need to look for an apochromatic (ED) lens instead of this standard configuration.
Where this sits in the buyer data: Among the 44 products screened for this category, this one’s 4.3 rating places it #12, on 163 ratings – above the 37-rating median of that group, so the average rests on more feedback than most of its comparables. On price it undercuts 59 of them.
Questions Buyers Ask About the HSL Refractor Telescope
Is the tripod sturdy enough to hold the weight of the telescope when I’m trying to focus?
The HSL Refractor Telescope includes a multi-angle adjustable tripod designed for stability during viewing. You should verify the maximum weight capacity of the tripod in the product documentation to ensure it supports the 70mm aperture assembly during manual focusing.
Is it easy enough for a 10-year-old to set up and use by themselves?
Yes, the HSL Refractor Telescope features a lightweight frame and a 5×24 viewfinder scope with crosshairs to simplify object positioning for children. The included custom backpack and simplified mounting bracket facilitate a straightforward out-of-box setup for younger users.
What magnification can I expect with the HSL 70mm Aperture Refractor Telescope?
The HSL Refractor Telescope provides three different magnification levels using the included 20mm, 10mm, and 4mm eyepieces. These optics allow for 20X, 40X, and 100X magnification when viewing lunar and Earth objects.
Does the HSL 70mm Aperture Refractor Telescope include accessories for taking photos?
Yes, the package includes a smartphone adapter and a wireless camera remote to facilitate capturing images. You can also use the included solar film and moon filter to manage brightness when photographing celestial objects.
Is the HSL Refractor Telescope Right for You?
The HSL Refractor Telescope suits 5 kinds of buyer and is the wrong choice for 4 jobs, listed below with the reason for each.
Who the HSL Refractor Telescope is for, and what it does well
Who the HSL Refractor Telescope suits
- Parents of children aged 8-12 — the lightweight frame and included backpack make it easy for kids to transport and use
- Astronomy beginners — the included 5×24 viewfinder and crosshairs simplify the learning curve of finding celestial objects
- Social media content creators — the smartphone adapter and wireless remote allow for capturing and sharing images of the moon
- Backyard hobbyists — the three premium eyepieces provide multiple magnification levels for exploring lunar and Earth objects
- Science teachers — the portable design and easy-to-use optics make it suitable for educational field trips
What the HSL Refractor Telescope handles well
- Lunar observation — the 4mm/100X eyepiece and moon filter provide high magnification and clarity
- Bird watching — the 5×24 viewfinder scope and multi-angle tripod allow for quick tracking of moving targets
- Astrophotography for social media — the smartphone adapter and wireless camera remote enable remote-triggered photos
- Stargazing in a park — the custom backpack and lightweight frame allow for easy transport to remote locations
- Terrestrial scouting — the 400mm focal length and 70mm aperture provide clear, bright images of nearby objects
What the HSL Refractor Telescope is the wrong choice for
- Deep space nebula photography — the 70mm aperture is too small to capture faint, distant celestial objects
- Professional planetary imaging — the f/5.7 focal ratio and 70mm aperture lack the light-gathering power for high-resolution detail
- Tracking fast-moving satellites — the manual tripod and 400mm focal length are not designed for high-speed tracking
- Observing distant galaxies — the 400mm focal length provides a wide field of view that lacks the reach for small, distant objects
What to budget alongside the HSL Refractor Telescope, and what to skip
Worth buying at the same time
- Red-light flashlight — to navigate the backyard or setup without ruining night vision
- Star chart app — to help identify the celestial objects found through the viewfinder
- Cleaning kit — to maintain the highly translucent coated optical glass lenses
- Extra batteries — to power the wireless camera remote for long observation sessions
- Sturdy chair — to provide a stable seating position for long periods of viewing
What you can skip
- Additional 20mm eyepiece — already included in the three premium eyepieces
- Separate smartphone mount — included as a luxury shooting configuration
- Basic moon filter — already included in the luxury shooting configuration
- Carrying case — already included as a custom backpack
Where to Buy the HSL Refractor Telescope
These retailers sell Refractor Telescope generally – we do not track which of them has this particular model in stock, so check availability and the current price with the retailer before making a trip.
- Amazon (online only) — wide selection of entry-level and mid-range brands
- Walmart (online and physical stores) — physical availability for common beginner models
- Target (online and physical stores) — convenient in-store pickup for basic starter scopes
- B&H Photo Video (online only) — reliable shipping and professional photography/optics expertise
- High Point Scientific (online only) — specialist retailer with expert staff and technical advice
- Orion Optics (online only) — specialist retailer with a wide range of dedicated astronomy gear
Final Verdict on the HSL Refractor Telescope
If you want a portable entry point that meets the 70mm aperture threshold for resolving lunar craters and Jupiter’s moons, the HSL 70mm Aperture Refractor Telescope is the right choice at around $129.99.
The HSL Refractor Telescope ranks well for beginners because it includes a 5×24 viewfinder scope and three eyepieces providing up to 100x magnification, supported by a 4.3 rating from 163 buyers.
Skip it if: you require an apochromatic (ED) lens to eliminate color fringing or need a larger aperture than 70mm for high-magnification planetary imaging.