Stargazing TelescopesStargazing TelescopesStargazing Telescopes
Have A Question? Call Us
+1 703 996 3053
Mon-Fri - 8am-4pm EST

APM 100/800 F/8 Triplet Apochromatic Refractor (2.5" ZTA) w./case, handle, Losmandy dovetail, finder shoe


In Stock Available for Back-orderOut of stock
Shipping calculated at checkout.
Out of stock

Delivery time to be provided upon order confirmation.

Our 100 / 800mm system is the classic 4 "entry-level size, but here in excellent optical and mechanical quality! You can assume that the optics will also meet the theoretical requirements in... Read more

visamastergoogle paypaypalshopify payapple payklarna-pay-lateramerican express
SKU: LZOS-100-800-T-2.5ZTAN/A
Our 100 / 800mm system is the classic 4 "entry-level size, but here in excellent optical and mechanical quality! You can assume that the optics will also meet the theoretical requirements in the sky.

The core of the device is the very high-quality 100mm lens, which we deliberately chose with a slightly longer focal ratio of f / 8.0. The focal length of 800mm is a very good compromise between visual use of high magnification and "space down" for great astrophotographic use with an extended field.

The optical design, a high-quality triplet with ED glass, has long been tried and tested. The quality of the image, which incidentally corresponds to a minimum standard of a Zeiss APQ, is underpinned by the solid cells, optimized for temperature compensation, as well as the high-quality multi-coating. The LZOS engineers have put all their knowledge into the calculation and manufacture of the frame and these optics, you can see that too! An interferometric test report is enclosed with the optics to substantiate this.

The tube is made of aluminum, has a photo-visual aperture system and is very torsion-resistant.

The device comes in a beautiful complete package, which optionally includes the high-quality APM ZTA 2.5" focuser with 1:10 micro-reduction. The focuser can be rotated through 360 ° and is also ideal for astrophotography. The APM Fast-Lock- Adapter 2 "/ 1.25" included, which is also very valuable. M63 and M68 internal thread connections are also available. Everything is completed by a Vixen-compatible connection plate, high-quality CNC pipe clamps and standard finder shoe. End caps at the front and rear prevent the penetration of Dust and foreign bodies. Everything is safely stored in a sturdy transport case. The system is almost "ready to work". If you want, you can order finder or guide scopes of your choice and / or flattener / reducer for photographic work as an option.

A small,  powerful optic that shines with its excellent price-performance ratio!

Scope of delivery:

• Optical tube
• LZOS test report
• 2.5 "APM rotary extension (ZTA) with M63i and M68i thread connection
• APM Fast Lock reducing adapter 2 "/1.25"
• Set of APM CNC  clamps
• APM mounting rail, Vixen compatible
• Dust caps
• Handle
• Transport case

Type of telescope

 3-element SuperED Apo Refractor


 3-element SuperED



Tube material



 100 mm

Focal ratio


Focal length

 800 mm





Limit value


Max. useful visual power

 300 x


 180 mm (from end of 2″ adapter)


 2.5″ APM Focuser with brass eyepiececlamp

Connection to eyepiece

 75 mm thread, 2″ and 1 1/4″ with adapter


 Finder base, not finder included

Tube diameter

 105 mm

Length during observing

 690 mm

Transportation length

 617 mm

Dewcap diameter


Length of dewcap

 230 mm

Width of tuberings

 2 Tuberings each 24 mm

Threads in tuberings

 1/4 Zoll 3 x

Distance of threads

 centric and 60 mm

Tube weight

 12.3 lb

Included accessories

 tube rings, dustcaps



Eyepiece adapter

 to 2″ and 1.25″

APM: If the product has been purchased for personal use, the warranty period is 24 months for new products, and 12 months for used products. If the customer is an entrepreneur, the warranty for new goods is 12 months, and APM will decide if they will rectify the defect or deliver a defect-free item.


At Stargazing Telescopes we are dedicated to making sure our customers receive the highest quality products. If for any reason you would like your purchase repaired or replaced, all you have to do is call us at 540 253 3466 or email us at and we will advise you on how to proceed.

Warranties will not be valid for products that have been misused or tampered with by the customer, and each manufacturer retains the right to inspect the product to determine whether it is covered by their warranty. If an item needs to be repaired or replaced, the customer is responsible for shipping costs unless otherwise stated.

Please note, you must have proof of purchase (copy of your receipt) in order for the warranty to be valid.


APM: The Shipping & Delivery Policy does not apply for APM as the products are shipped from outside the US. Please note, import duties may apply to some APM products. You will be notified of this additional cost upon order confirmation.  Email us at or call us on 540 253 3466 for more information regarding inventory and shipping.


We provide free shipping on all orders over $99 within continental USA!

Order Confirmation:

You will receive an e-mail to confirm that your order has been placed. At this point your chosen payment method has been pre-authorized for your purchase.

We will confirm with the supplier that your item(s) are in stock and available for shipment. If your item(s) are in stock we will process payment and ship your order within five business days.

If your order is on back-order we will provide an estimated lead time. If you are happy to wait for the item, we will process payment to secure your order and ship your order as soon as it is available. If you do not wish to wait, we will void the pre-authorization and cancel your order.

If your item is out of stock or unavailable, we will void the pre-authorization and reach out to you via e-mail. 

Order Shipment & Delivery:

If your order is in stock and we process the charges to your pre-authorized payment method, it will ship within five business days from the date of your order unless otherwise stated.  We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out.  If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at

Delivery times will vary based on your location and shipping method that our vendors use. Within mainland USA, Economy shipping generally takes five to eight business days to arrive, and Standard shipping takes approximately three to four business days. 


Please inspect the packaging of your item(s) when they arrive. If you notice any damage you should make note of it when signing for delivery.  If your item(s) do arrive damaged, please send photos to and we will contact the manufacturer on your behalf.


APM: As APM products ship from Germany, international returns are not accepted. 


We aim to make returns as easy as possible at Stargazing Telescopes. You may return your purchase within the allotted time frame that each manufacturer allows.

You will be responsible for the return shipping charges as well as a 20% restocking fee (20% of the price of product).

To request a return please email and include your name, order number and date of purchase. We will also require proof of purchase, which is a copy of the receipt.

Returns must be authorized before being sent. We will contact the manufacturer on your behalf and issue you a RMA number which is mandatory for returns.

To be eligible for a return, your item must:

  • be unused and in the same condition that you received it.
  • be undamaged and in the original packaging.

Products not eligible for return:

  • Products that have been used or tampered with
  • Products not in resalable condition
  • Custom orders
  • Products not in original packaging
  • Products that do not have an RMA number

The buyer is responsible for all shipping costs and must use the shipping method as specified by Stargazing Telescopes to ensure the item is not damaged in transit and is tracked and sent safely. Refunds will be processed within 14 working days from the point we have received your return.

Before your refund is approved, the manufacturer will inspect and process the items which can take up to seven business days. Return shipping charges and re-stocking fees are non-refundable. Shipping charges and factory re-stocking fees will be deducted from the total refund amount. You will receive a confirmation email when your return has been processed. Refunds will be credited to the original payment method and can take up to 72 hours to reflect on your statement.


You may cancel your order any time before your item(s) have shipped. If your items are in-stock / back-ordered there is a $20 cancellation fee applicable before your items have shipped.

If your order has shipped, you (the buyer) will be responsible for return shipping charges (see Return Policy above for detail). Refunds will only be issued to the original payment method that was used when placing your order.


Please inspect the packaging of your item(s) when it arrives, if you notice any damage you should make note of it when signing for delivery. If your item(s) do arrive damaged, please send photos to and we will contact the manufacturer on your behalf.


Customer Reviews

No reviews yet
Not enough items available. Only [max] left.
Add to WishlistBrowse WishlistRemove Wishlist

APM 100/800 F/8 Triplet Apochromatic Refractor (2.5" ZTA) w./case, handle, Losmandy dovetail, finder shoe