Sharpstar 121 SDQ

Product category: Product brand: SharpStar
SharpStar 121SDQ

SharpStar 121SDQ

Price 4 299,00 €

The Sharpstar 121 SDQ is an apochromatic Petzval quintuplet refractor with a focal ratio of f/5.6. The air-spaced triplet objective includes one ED glass element, while the rear doublet acts as a corrector and field flattener.

Using a fixed two-element corrector in the optical tube means the user does not have to set the camera at a specified position relative to the flattener, which is unlike the case with external field flatteners and focal reducers. This allows the freedom to use a wide range of accessories such as filter wheels or off-axis guiders in front of the sensor without concern about the correct distance between flattener and sensor. The Sharpstar 121SDQ has a generous 145mm of working distance.

The large 4" brass rack-and-pinion focuser is fully rotatable by 360° to perfectly frame the subject, and it has a precise dual-speed 10:1 focusing mechanism for precise focus control. The focuser supports a big 7.5kg payload and the drawtube has an opening for standard 2" diagonals and accessories with 110mm of focuser travel.

All five lenses in the telescope are fully multi-coated and the aluminum tube is internally blackened to reduce reflections and absorb stray light. All mechanical components of the Sharpstar 121 SDQ are engineered to provide the best rigidity, performance and durability.

The 60mm fully-corrected image circle is large enough for a medium format camera, and a focal length of 678mm makes this a perfect fast astrograph for the advanced astrophotographer.

The telescope also includes a Vixen/Synta-style finder mounting base (finder not included), tube rings, a Losmandy/D style mounting rail (180mm long), a convenient carrying handle, a metal objective dust cover, and a protective hard case. No 1.25" eyepiece adapter is included.


Technical information:

    • Aperture: 121mm
    • Focal Length: 678mm
    • Limiting Star Magnitude: 12.1
    • F Ratio: f/5.6
    • Resolution: 0.97 arc seconds
    • Objective Type: Quintuplet Air-Spaced Apochromatic
    • Back Focus: 145mm (from thread of focuser end
    • Net Weight: 7.98kg (8.92kg including tube-ring, dovetail plate, handle)
    • Length: 698mm (DewShield Extended), 598mm (DewShield Retracted)
    • Tube Outside Diameter: 130mm
    • Dewshield Outside Diameter: 160mm
Your shopping cart is empty

Terms and conditions

These terms and conditions are valid from November 7th, 2020.

Contact information

Astro Art Finland
Sinirinnankatu 18
FI-50190 Mikkeli

Telephone: +358442778923
VAT Number: FI32234856

Products are sold for private customers over 18 years of age. Prices include VAT. The prices are subject to change.


Products on the online store are ordered by adding them to the shopping cart and by paying them with an online checkout service. All customer information is handled confidentially. Contact information collected during the order process is only used for the delivery of the order, unless otherwise stated. When placing an order you are required to accept the terms and conditions.

Payment and payment methods

The online checkout service in use is Paytrail. The payment methods are invoice, installment payment, card payment and payment via online bank.

By filling your personal information at the checkout you accept the terms and conditions of Paytrail Oyj
(Paytrail Oyj, Innova 2, Lutakonaukio 7, 40100 Jyväskylä). By clicking "buy" you accept the terms and conditions of Astro Art Store.

Order and payment confirmation

After we have received your order we will immediately send you an order confirmation that contains your order information. Always check the content of the order confirmation. If you have questions regarding your order, contact our customer service immediately. Keep the order confirmation in case you need to contact our customer service. Make sure that you have your customer number and order number available when contacting our customer service. Always make sure that the package contents matches the order confirmation.

You can use the following information to contact our customer service:

Astro Art Finland
Sinirinnankatu 18
FI-50190 Mikkeli

Telephone: +358442778923
VAT Number: FI32234856

Shipping methods and fees

Shipping fees include shipping and packaging fees. We will present an estimate of the shipping fees in the shopping cart. The exact shipping fees are visible when you have chosen your preferred payment method and shipping method for your order. The available shipping methods vary depending on the products and the combined weight of the products in the shopping cart. 

Delivery time

Our most common delivery times to Finland vary depending on the product and delivery method in question. Exceptions to delivery times are stated. We will notify you about the possible delays right after your order.

We are not responsible for delays caused by force majeure or indirect losses caused by delays. The online store will inform about exceptional delivery times on the website.


All of our products have at least a 1-year warranty by the manufacturer. Warranty-related issues can be dealt either directly with the manufacturer or with Astro Art Store. 

Warranty does not apply to faults that have been caused by:

a) incorrect maintenance, lack of maintenance, or lack of calibration

b) software, parts, or equipment that have not been delivered by Astro Art Store

c) unauthorized modifications or misuse of the product

Return conditions

You have the right to cancel this agreement within 14 days without declaring the reason. The deadline for canceling this agreement ends 14 days after you have received the last shipment of your order. If the product is downloaded, the deadline for canceling this agreement is 14 days after you have downloaded the product.

To use your right to cancel, you need to send us an unambiguous notification of your decision (for example by phone or by email). You can also use our printable return form, but it is not required. To comply with the 14-day deadline you need to send the notification before the deadline.

Use the following contact information to send the notification:

Astro Art Finland
Sinirinnankatu 18
FI-50190 Mikkeli

Telephone: +358442778923
VAT Number: FI32234856

Effects of canceling your order

If you decide to cancel this agreement, we will return your payment in full, including the shipping costs (only the amount of the cheapest available shipping method). The payment will be returned without a delay, and within 14 days after you have received the cancellation confirmation.

Return fees are on the responsibility of the customer. The items must be returned to the address of Astro Art Finland with the same method as they have been delivered to the customer. 

We will return the payment by using the same payment method as the original payment, unless both parties agree otherwise. The payment is returned in a way that the you will not get any extra fees.

You must send the items back without a delay and within 7 days of receiving the cancellation confirmation. The deadline has been complied with, if you send the items back before the 7-day deadline.

You are only responsible for such decrease in value of the items that is not caused by handling that necessary to test for operation, features, or functionality of the items.

Unredeemed package

Failure to redeem your delivery is not the same as returning or canceling your order. We will charge a fee for unredeemed orders that have not been canceled according to return conditions.

Problematic situations

If the item has been lost or damaged during delivery or it does not correspond to your order, you need to use our contact information to inform us within 14 days by mail, email or by phone. The contact information can be found in "Return conditions". If the package has clearly been damaged during shipping, you need to inform the delivery company immediately.