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Sharpstar Optics 100QII f/5.8 Quadruplet APO - 100QII

1 In Stock - Ships Today if Ordered by 2pm! (Tues - Fri)

We will price-match Canadian astronomy dealer pricing

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Compared with the first generation, this telescope has the following new characteristics:

  • Improved optical design, users now can apply an f/4.3 full-frame reducer to the Sharpstar 100Q II, no longer limited by the original f/5.8 focal ratio.
  • More artistic appearance and design.
  • 3.2" with an extra 360-degree rear-end CAA, plus an angle adjuster
  • An attractive and practical handle.

Sharpstar 100Q II refractive astrograph boasts quadruplet air-spaced APO lens design, one of which is an ED(extra-low dispersion) glass. The lenses are fully wrapped with multi-layer coatings, considerably enhancing its performance whether in sky-imaging or visual observation.

The image circle is more than 44mm, which can accommodate most stock 35mm-full-frame cameras, substantially facilitating your astrophotograph. The new-added ED glass can effectively control the chromatic aberration and build up contrast and sharpness, leading our customers to a new level of universe exploration.

The properly-designed focal ratio enables Sharpstar 100Q II to be practically applied both in sky-imaging and visual observation. 

Along with its wonderful optical system, Sharpstar 100Q II is also born with a impressive focusing mechanism. Compared with most stock “rackless” focusers, its 3.2" 1:10 dual-adjustment rack-and-pinion focuser is solidly crafted with a much larger load capacity, saving the users from worrying about slipping or out-of-focus when using or attaching other accessories to the focuser. The rotator which can take a 360-degree turn on the focuser can help you adjust your imaging angle, reaching the best perspectives.

The standard 3" barrel is much thicker and more sturdy than other 3" counterparts paving the way for future upgrade of large-size flatteners or reducers which, as we know, always have a higher demand for a heavy-duty focuser. The load-capacity adjustment thumb screw on the focuser can more precisely control and balance the focuser if extra accessories are attached.

Aperture size:100mm
Focal length:580mm
Focal ratio:f/5.8
Objective lens:quadruplet air-spaced APO lens structure
Net weight:4.3kg
Gross weight:5.2kg(including tube ring, handle and dovetail plate)
Resolution:1.16 arc seconds
Limiting visual magnitude:11.8
Tube outer diameter:114mm
Tube length:600mm(when the dew shield extended), 508mm(when the dew shield contracted)

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

Items that have been opened, damaged or are otherwise unsaleable will be subject to a minimum 10% restocking fee, to be assessed by Telescopes Canada upon receipt of the returned goods

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Typographical Errors and Order Cancellations

Telescopes Canada reserves the right to cancel an order due to an error in pricing by Telescopes Canada or one of our suppliers, equipment being no longer obtainable, or other events which are out of our control.

Client-Initiated Cancellations

Client-initiated order cancellations are accepted prior to delivery of the equipment to the customer, thereafter it is a return.

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