Holiday gift guide: optics gifts by budget

Shipping available to US addresses only

Explore Scientific Authorized Retailer badge
Pre-order
Explore Scientific  |  SKU: ES-AR90700-MAZ-NANO

Explore Scientific Sidara Nano 90 — 90mm Refractor Telescope with Alt-Az Mount

Regular price $299.99

Pre-order now to secure your spot!

Orders will be fulfilled in the order they are received. Estimated shipping timeline is November 2026, and is subject to change.


Shipping & Returns

We offer free US standard shipping on orders over $99 and 30-day returns on most items. Some limitations apply.

Shipping Policy

30-Day Return Policy

The Explore Scientific Sidara Nano 90 puts a 90mm refractor, Nano alt-az mount, and SkyAssist smartphone navigation in a single, portable system.

The 90mm doublet refractor brings clean views to lunar craters, planetary detail, and brighter deep-sky objects.


Key Features
  • 90mm doublet refractor with an f/7.8 focal ratio, for sharp images
  • Nano alt-az mount with dual-axis slow-motion controls for smooth, precise tracking, and no electronics or power required
  • SkyAssist smartphone navigation. Attach your phone to locate and identify celestial objects
  • 45° erect-image diagonal makes the system double as a daytime spotting scope for terrestrial viewing
  • Solar filter included: a cap that fits over the front of the tube, marked to read its directions before use; follow those directions before viewing sunspots and solar eclipses
  • Two eyepieces (25mm and 10mm) cover wide-field and medium-high magnification

Ideal For

Beginners and families who want a grab-and-go telescope that works well for both astronomy and daytime nature viewing. Travelers will appreciate the compact footprint; the Nano mount was designed for portability without sacrificing stable tracking.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • Shop Pay
  • Visa

Your payment information is processed securely encrypted during transmission. We do not store credit card details nor have access to your credit card information.