Celestron 21035-ADS Travel Scope 70 refractor telescope kit with backpack (Black)
Product description
What it is and the kind of job it’s built for
The Celestron 21035-ADS Travel Scope 70 is a compact refractor telescope kit aimed at beginners and travel-friendly astronomy. It’s designed around a straightforward idea: get a 70mm objective and fully-coated optics in a lightweight, portable setup you can actually take out of the house. If you’re after a telescope for evening stargazing that doesn’t feel like a logistics project, this kit’s travel scope concept is the headline.
On paper, the combination of a 70mm lens, coated glass, and a simple alt-az mount makes it easier to start observing than many more complex setups. It’s also bundled in a travel backpack, so you’re not just buying optics—you’re buying a “take it with you” kit.
That said, it’s worth keeping expectations realistic. This is positioned as an entry-level travel scope rather than a deep-sky powerhouse or a “set up and forget” instrument for serious astrophotography.
Where it stands out in day-to-day use
A telescopes’ usefulness often comes down to how quickly you can point it and get something worth looking at. This kit uses an alt-az manual control with clutch, which is typically what you want for smoother pointing as you track objects by hand.

What you’ll notice most
- Portability built in: the kit includes a custom travel backpack to carry the components.
- Basic observing power right away: two eyepieces are included for both lower- and higher-power viewing.
- Day-to-night versatility (in the description’s terms): it’s framed as suitable for celestial objects at night and terrestrial viewing during the day.
The micro-experience here is simple: you set up outdoors, open the backpack, fit the tripod, and use the manual controls to sweep to a bright target. With the included eyepieces, you can switch between a wider, easier-to-find view and a higher magnification view—handy when you’re learning what’s achievable and how the scope behaves.
Key features that matter for beginners


This is one of those kits where the bundle is part of the value, not just “extra bits”. The description calls out fully-coated glass optics and a 70mm objective lens, which should help with light transmission compared with more basic optics.
You also get eyepieces aimed at learning: 20mm and 10mm eyepieces for different power levels. The kit also includes a panning handle (via the manual alt-az control with clutch), plus a full-height tripod so you’re not stuck hunched over.

There’s also a software angle in the form of a free download of one astronomy software programme. If you’re the sort of beginner who likes to identify objects and plan sessions, it can make the first few evenings feel less like guesswork.
What’s in the bundle (and the extras included)
Based on the provided details, the package includes the Travel Scope 70 refractor telescope kit, a full-height tripod, and a custom backpack.
It also specifically includes additional accessories: - Additional 4mm eyepiece - 3x Barlow lens - Two eyepieces (20mm and 10mm) - Bonus bag, tripod, and software download (as described)
That matters because a travel kit without enough accessories can end up feeling limited fast. Here, the inclusion of a Barlow and an extra eyepiece suggests you can experiment with magnification rather than being locked into just one viewing mode.
Tech specs (what we can safely say from the info)

Tech specs
- Type: Refractor telescope (Travel Scope kit)
- Objective lens size: 70mm
- Optics: Fully-coated glass optics
- Mount/control: Alt-az manual control with clutch, panning handle
- Eyepieces included: 20mm, 10mm, plus an additional 4mm eyepiece
- Barlow lens included: 3x Barlow lens
- Tripod: Full-height tripod included
- Included software: Free download of an astronomy software programme
- Warranty: Two-year warranty


A quick note: while the description highlights these elements, it doesn’t spell out everything you might see in a full spec sheet (like maximum magnification, focal length, or weight). If those details are important to your buying decision, you may want to double-check the listing for the missing measurements.
Pros and limitations to keep in mind
Strengths
This kit looks like it’s built for learning, portability, and “use it when the mood hits”. The travel backpack concept, fully-coated optics, beginner-friendly eyepieces, and manual alt-az control with clutch all point toward a setup you can realistically take outside.

It also comes with a two-year warranty, which is a sensible baseline when you’re buying a telescope kit.
Where it may fall short
It may not suit you if you’re expecting high-end performance. With only the info provided, it’s clearly presented as an introductory travel scope package, and those typically do best with bright targets and straightforward observing rather than pushing into the most demanding viewing.
Also, the kit doesn’t mention any GoTo system or electronic tracking. If you specifically want automated finding and tracking, this is unlikely to match what you’re imagining.
Should you buy it? (Buying verdict)
It’s a solid pick if you want a beginner-friendly telescope kit you can take on trips, with eyepieces and a Barlow included so you can experiment with different viewing powers. It makes sense if you like the idea of using a travel backpack, setting up manually, and learning the sky step by step—night viewing and even some daytime terrestrial observation, as described.



You may want to skip it if you need detailed technical specs for your setup, or if you’re aiming for advanced performance features like automated tracking. And if you prioritise long, fuss-free sessions with minimal manual pointing, this may feel more like a learning tool than a “set-and-track” instrument.
In short: if your main goal is portable observing and getting started without buying lots of separate accessories, this kit’s bundle approach is the reason to consider it. If you’re already deep into telescope tinkering or you know you want high-end features, it might end up feeling a bit too entry-focused for what you want.
Mini FAQ
Where can the telescope be used?
The kit is described as suitable for celestial objects at night and terrestrial viewing during the day, and it’s built around travel so it’s meant for taking outdoors.
What eyepieces are included?

It includes eyepieces at 20mm and 10mm, plus an additional 4mm eyepiece.
Does it include a Barlow lens?
Yes, the kit includes a 3x Barlow lens.
Is there any software included?
Yes—there’s a free download of an astronomy software programme included with the kit.
What warranty do you get?
The description states a two-year warranty.
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