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APM 228/2050 F/9 Triplet Apochromatic Refractor (3.5"SL)

$59,394.00

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Our 228 / 2050mm system takes the lead in the size of apochromatic objectives manufactured worldwide.Of course, these optics are also manufactured to the highest quality standards: Strehl value minimum 0.96, carefully... Read more

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SKU: LZOS-228-2050-T-CNC-3.5FTN/A
Our 228 / 2050mm system takes the lead in the size of apochromatic objectives manufactured worldwide.

Of course, these optics are also manufactured to the highest quality standards: Strehl value minimum 0.96, carefully polished and interferometrically tested, optimally broadband multi-coated. The effort involved in titanium cell of the lens system is not insignificant. Here we fall back on the decades of experience and expertise of LZOS, which ultimately manufactured practically all Russian space optics. LZOS conducts its own glass research / development and also produces these glasses itself. This results in perfect control of every development stage. APM has been a partner for civil optics for decades and can actively participate in the development of optics, which contributes to the optimization and adaptation to the needs of professional and amateur astronomers.

Our 9 “triplet SuperED Apo is produced exclusively for you. You have full freedom of design for the tube, focuser and external adjustments such as back focus and accessory connections / adapters. We calculate the diaphragm system exactly according to your specifications for field diameter and distance to the focal plane. Custom-made products such as Coudé tubes can of course be realized!
The weight of the tube is approx. 35-36kg, depending on the configuration. With an elongated tube, the mount should already belong to the upper class in order to be able to work with low vibration.

If the device is properly installed in the observatory, you can look forward to unforgettable observations! With this opening, groups of galaxies, weaker globular clusters and close binary stars are visually possible. Thanks to the excellent color correction, you will even be able to identify different color components in the double and multiple stars. Of course, these optics are perfect for planets and solar observation: Walk along the terminator of the moon and dissolve the finest details and craters when the air is calm! Saturn clearly shows the ring divisions and on Jupiter you can follow the migration of the different colored storm systems. The contrast performance is significantly increased compared to mirror systems and achromatic lenses. Due to the exact representation of these refractors, our apos are also ideal for research purposes! Our reducers and field flatteners from Massimo Riccardi are available for those who want to work in photography!

In addition to the large 3.5 “FeatherTouch focuser, all the important reducing adapters, sleeves and the viewfinder holder are already integrated in order to conveniently connect both photographic and visual accessories. Multi-compatible pipe clamps are standard, a sturdy transport box is optionally available. We coordinate the primary data and optional components closely with you!


Scope of delivery:


• Optical lightweight CNC tube with movable dew cap
• Set of CNC  clamps
• 3.5 "Starlight extension with mounted 50 mm finder bracket, both can be rotated through 360 °
• Reducer adapter 3.5 "/ 2" with new full eyepiece / star diagonal clamp
• Extension 2 "-80 mm
• Adapter 2 "/1.25" with brass clamping ring
• Test protocol
• Covers on both sides
• 2 steel rails + 4 magnet weights for eyepiece balance


Optional available : APM (TMB-Design) Apo 228mm / 2050mm CNC-LW II model Matthias Wirth (folding tube)

Some technical data for the folded APM (TMB-Design) version 9 "f / 9


• Tube diameter: 390mm
• Tube length: 600mm
• Dew shield diameter: 300mm
• Dew shield length: 350mm
• Back focus from the end of the tube: 370mm
• Back focus from retracted focuser: 220mm
• Diameter of large Zerodur plane mirrors: 190mm
• Diameter of small Zerodur plane mirrors: 130mm
• Weight tube with pipe clamps: 34kg

Type of telescope

3-element SuperED Apo Refractor

Lens

3-element SuperED

Color

white

Tube material

Aluminium

Aperture

228 mm

Focal ratio

f/9

Focal length

2050 mm

Coating

Multicoated

Resolution

0.5"

Limit value

13.6 mag

Max. useful visual power

450 x

Backfokus

220 mm

Focuser

3.5" Starlight Feather Touch, 360° rotatable

Connection to eyepiece

3.5" to 2" and 2" to 1 1/4"

Viewfinder

Bracket for 50 mm Viewfinder, Viewfinder optional

Tube diameter

268 mm

Length during observing

2160 mm

Transportation length

1880 mm

Dewcap diameter

306 mm

Width of tuberings

2 tuberings each 30 mm

Threads in tuberings

1/4" 5 x

Distance of threads

centric, 2.362" and 3.2" distance

Tube weight

79.3 lb incl. Tuberings

Included accessories

Adapter 3.5"/2" and 2"/1 1/4" with Brass Clamp, 2" Extension 80 mm, Tubering Set, Certificate, Dustcaps, 2 Steelrails with 4 magnetic Balancing Weights

Case

optional

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.

Warranty

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 info@stargazingtelescopes.com 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 orders@stargazingtelescopes.com 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 orders@stargazingtelescopes.com

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. 

Damages:

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 returns@stargazingtelescopes.com 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 returns@stargazingtelescopes.com 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.

Cancellations:

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.

Damages:

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 returns@stargazingtelescopes.com and we will contact the manufacturer on your behalf.

 

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APM 228/2050 F/9 Triplet Apochromatic Refractor (3.5"SL)

$59,394.00