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APM 100/800 F/8 Triplet Apochromatic Refractor (3.5"SL)


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Made in Germany, with non-compromising mechanical quality- the APM LZOS APO 100/800 is an 100mm Aperture, 800mm Focal Length F/8 3 Element SuperED APO Refractor. This TMB 100mm F/8 is not only... Read more

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SKU: LZOS-100-800-T-CNC-3.5FTN/A

Made in Germany, with non-compromising mechanical quality- the APM LZOS APO 100/800 is an 100mm Aperture, 800mm Focal Length F/8 3 Element SuperED APO Refractor. This TMB 100mm F/8 is not only an incredibly powerful visual APO refractor that can be utilized for lower power wide field observations and high power (and extremely high contrast)planetary and double star observations, but is top of the line as a superb imaging machine. By adding in the designed and matched full format field flatter- this telescope will offer pin-point stars across the entire field to its outer edges (by use of a large format CCD Camera, or medium format cameras such as the Pentax 6×7)

Complete with dew shields which slide smoothly over the tube, keeping your surface free of paint scratches, the system includes a full 3.5″ Starlight Feather Touch focuser that rotates smoothly with zero image shifting. For those who image, the lack of shift is incredibly important when you have your imager at best focus, and simply need to rotate in its optimal position. The finder bracket allows for rapid changes with its quick exchange style screw system, and is mounted to the rotatable focuser itself, allowing for ration of the finder scope to its most comfortable observing position. The focuser itself comes iwth large anodized focuser knobs and offers the buttery smooth action that Starlight Instruments is known for. The focuser comes with 3.5″/2″ adapter attached and a 2″/1.25″ clamp ring style adapter to protect your eyepieces and diagonal from scratches.

The Telescopes tube lay flat on both sides, and come standard with 3 tapped 1/2-20 inch holes which lie perpendicular to the tube line- with the outer 2 holes center to center spacing of 60mm (2.362″)

The center tapped hole can be used for a variety of mount plates with only a single center hole and the tubes internal baffles are matched for a large usable photographic field. The system, alongside with its matched field flattener/reducer for full format CCD Cameras, offers an image circle of appropriate size.

Telescope Type

3-element SuperED Apo Refractor


3-element SuperED



Tube material



100 mm

Focal ratio


Focal length

800 mm





Limit value


Max. useful visual power

200 x


 220 mm


 3.5″ Starlight Feather Touch, 360° rotatable

Connection to eyepiece

 3.5″ to 2″ and 2″ to 1 1/4″


 Bracket for 50 mm Viewfinder, Viewfinder optional

Tube diameter

 136 mm

Length during observing

 760 mm

Transportation length

 650 mm

Dewcap diameter

 152 mm

Length of Dewcap

 230 mm

Width of Tube rings

 2 Tube rings each 24 mm

Threads in Tube rings

 1/4 Zoll 3 x

Distance of threads

 centric and 60 mm

Tube weight

 15.4 lb incl. Tube rings

Included accessories

 Adapter 3.5″/2″ and 2″/1 1/4″ with Brass Clamp, 2″ Extension tube 80 mm, set of Tube rings, 2 Covers



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.

Each of our vendors have different warranty protocols for their products. Please see the relevant section below to get more information on the specifics of their warranty policies.

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 at the time of delivery.  Email us at or call us on 540 253 3466 for more information regarding inventory and shipping.

Order Confirmation:

As soon as you place your order, you will receive an order confirmation e-mail.  This means that we have received your order in our system and pre-authorized your credit card for the purchase.  As soon as we receive your order, we automatically reach out to our suppliers to confirm that it is in stock and available for immediate shipment.  If your item is on backorder or unavailable, we will void the pre-authorization and reach out to you via e-mail.  If your item(s) are available for immediate shipment (within five business days), we will process the charges and submit the order for shipment.

Order Shipment & Delivery:

If your order is in stock and we process the charges to your credit card, it will ship within five business days from the date of your order. 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 the shipping method that our vendors use. Economy shipping generally takes five to eight business days to arrive, and Standard shipping generally takes 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. 

Return Policy:

Here at Stargazing Telescopes we make returns as easy as possible. You may return your purchase within the allotted time frame that each manufacturer allows. You will be responsible for 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.

Approved refunds will be issued after the manufacturer inspects and processes your return which can take up to 7 Business days. Return shipping charges and re-stocking fees are not 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.


All orders cancelled after 24 hours are subject to a $20 administration fee, whether or not your order has shipped. If your order has shipped, you (the buyer) will also be responsible for return shipping charges. Refunds will only be issued to the original credit card that you 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.


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APM 100/800 F/8 Triplet Apochromatic Refractor (3.5"SL)