APM 228/2050 F/9 Triplet Apochromatic Refractor (3.5"SL)
$59,394.00
In Stock Available for Back-orderOut of stockShipping calculated at checkout.
Delivery time to be provided upon order confirmation.
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
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
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:Â 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.
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.
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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. Average shipping price is $500, and final price to be confirmed upon order. Email us at orders@stargazingtelescopes.com or call us on 540 253 3466 for more information regarding inventory and shipping.
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We provide free shipping on all orders over $150 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.Â
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 orders@stargazingtelescopes.com.Â
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.Â
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.
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APM:Â As APM products ship from Germany, international returns are not accepted.Â
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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 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.
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.
Cancellations:
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.
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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