Celestron 90EQ Astromaster Maksutov-Cassegrain Telescope
Peering into an eyepiece only to see a blurry, colour-fringed blob where Saturn’s rings should be completely saps the excitement out of stargazing. Basic entry-level telescopes often flex under their own weight or suffer from optical aberrations that turn planetary tracking into a test of patience. This specialized catadioptric powerhouse resolves those clarity issues by folding a massive focal path into an incredibly compact, highly stable tube assembly, delivering ink-black backgrounds and razor-sharp contrast on lunar craters and planetary disks.
Why Specialized MAK Mirrors Outperform Common Entry Tubes
Standard reflector tubes require constant mechanical realigning to keep their optics true, while cheap refractor lenses bend light unevenly, muddying your view with purple color halos. This Maksutov-Cassegrain design bypasses structural degradation entirely by replacing a traditional heavy secondary mirror with an internal reflective spot bonded right onto the corrector glass. The resulting f/14 focal ratio minimizes stray light and focuses high-contrast images directly into your eye, eliminating both chromatic aberration and the need for frequent manual collimation.
High-Contrast Deep Space Mechanics
- Maksutov-Cassegrain Internal Spot Optics: Maximizes structural alignment and contrast by using a small, permanently fixed secondary coating inside the lens.
- German Equatorial Tracker Mount: Features smooth, fine-gear dual control knobs to follow targets accurately along the natural rotational axis of the night sky.
- Warp-Free 1250mm Focal Track: Packs incredible magnification power into a short, manageable optical tube that resists ambient wind vibrations.
- Erect Image Diagonal System: Corrects the internal mirror inversion automatically, rendering subjects right-side-up for fluid shifting between astronomy and land viewing.
Optical Calibration and Geometry
| Attribute | Specification |
| Optical Framework Design | Maksutov-Cassegrain (Catadioptric) |
| Active Light Aperture | 90mm |
| Total Core Focal Length | 1250mm |
| System Focal Ratio | f/14 |
| Included Eyepieces | 20mm (62x power) & 10mm (125x power) |
| Mount Orientation Type | Manual German Equatorial (EQ) |
| Targeting Mechanics | StarPointer™ red dot finderscope |
| Optical Treatment | Fully coated high-transmission glass |
Engineered for Patient Backyard Astronomers
This high-contrast instrument sets up without tools in mere minutes, making it an excellent addition to regular family camping trips or dedicated garden observation sessions. The compact tube length fits neatly alongside your luggage, matching the needs of casual stargazers who refuse to compromise on visual sharpness.
Secure Your Optical Kit
Our warehouse stock is verified and live at Elite Store, ensuring a dependable courier service handles your package for swift UK dispatch.
FAQs
Q: Will I need to manually adjust and collimate the mirrors before my first viewing session?
A: No, the unique Maksutov design utilizes a factory-set reflective spot instead of a loose secondary mirror frame, ensuring the optical path remains perfectly aligned right out of the box.
Q: Can I use this telescope during the day to look at distant ships or mountain peaks?
A: Absolutely, the included erect image diagonal automatically flips your view right-side-up, making this telescope an ideal long-range spotter for terrestrial coastlines and wildlife.
Q: How safely is this fragile optical instrument packaged for transit?
A: Elite Store protects every instrument with custom-molded internal foam shields to guarantee a prompt UK arrival via our fast-tracked UK transit network.
Shipping & Returns
Reliable Standard Delivery
- Mainland UK: Delivered within 3–5 business days via our trusted carrier partners.
- Fast Processing: All orders are dispatched within 1–2 business days (Mon–Fri).
- Tracked Service: You will receive a tracking number via email as soon as your order leaves our facility.
- Service Notice: Please note that delivery service is not available for Northern Ireland, the Scottish Highlands/Islands, Isle of Man, Scilly Isles, or the Channel Islands.
Easy 14-Day Returns
- Easy Returns: You have 14 days after your package arrives to ask for your money back.
- Condition: Items must be unworn, unused, and in their original packaging with all tags attached to be eligible.
- Faulty Goods: If your item arrives damaged or defective, please contact support@elitesstore.co.uk within 48 hours for a replacement or refund.
- Return Shipping: Unless the item is faulty, the buyer is responsible for the cost of return shipping.