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Telescope Refractor - APM Doublet SD Apo 140mm F/7 FPL53 2.5" Focuser OTA
Telescope Refractor - APM Doublet SD Apo 140mm F/7 FPL53 2.5" Focuser OTA

APM Doublet SD Apo 140mm f/7 FPL53 2.5" Focuser OTA

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    The new, compact all-rounder from APM with dual-lens FPL53 & Lanthan H-LAF53 optics.

    The new APM 140mm f/7 convinces with its high performance The new 140 mm f / 980 mm SD has a Doublet optic with SD glass, which has a lens made of FPL-53 for a maximum of 2. This telescope with a high-quality optics and a solid tube at an unprecedented price Achieve Performance This new innovative combination results in color correction far beyond the ordinary in this price range To guarantee the typical high quality of APM telescopes, each optic undergoes an interferometric test at 532nm (green) prior to shipment.
    The instrument comes with a massive 2.5 inch extension. The extract is particularly well suited for heavy accessories and offers an absolutely vignitus-free image for large-format chips. 

    The special feature of the 140mm SD APO:

    • Very high quality and convincingly good optical quality
    • Pure color optics with FPL53 glass
    • Precise 2.5 "Extract 1:10 stocked for heavy accessories
    • With f / 7 ideal for visual and photographic purposes
    • CNC clamps
    • handle
    • Very good price / quality ratio

    With its focal length of 980 mm, the 140 mm SD-Apo is a true all-rounder. The observation of high-contrast double stars in English and detailed planetary observations will be a pleasure with this device. In addition, this new Apo with only 9.8 kg is very light and can be used on compact mounts.

    The well-known APM quality has proven itself in all areas. The new 3.7" focuser with rack and pinion drive and 1:10 reduction remains stable even at high loads and is also suitable for photography.The attention to detail can also be found in the enclosed 2" to 1.25 "eyepiece adapter It has a completely new design that clamps the eyepiece evenly and thus works much better than conventional adapters with a simple brass and screw clamping ring.As 

    an optional accessory for the SD APO 140 f / 7 we recommend our Riccardi Flattener APO Reducer 0.75 xM82 (the focal length is reduced to 735mm at f / 5.25) or our Riccardi APO Flattener Model 2 for APO's (see recommended accessories)

    With the new 140 mm SD-Apo we offer you an apochromatic refractor of incomparable performance at an unbelievable price. 



    • Optical tube
    • 2.5" focuser with 1:10 reduction

    Telescope Type: Doublet ED apochromat Lens: Doublet ED Apo with FPL-53 element Color: black-and-white tube material: aluminum Opening: 140 mm Aperture: f/7 Focal length: 980 mm Compensation: Multi-coating Resolving power: 0.83 " Border Size: 12.5 mag Max. Meaningful magnification: 280 times Back Focus: 180 mm Focuser: 2.5" APM pullout, 360 ° rotatable, with 1:10 micro reduction Eyepiece: 2 inches viewfinder: none included tube diameter: 152mm Observation Length: 1030 mm Transport length: 830 mm Dew Cap Diameter: 186 mm Cap Length: 290 mm Total weight: 9.0 kg (with pipe clamps, carrying handle, 3" rail)

    We work very hard to ensure that we offer the absolute best prices online.  If you find another online store that offers a lower price then us within six months of your purchase date please let us know and we will refund your original payment for the difference.  We want you to feel confident that you are getting the absolute best price for the product you are ordering.  If you find that our own website has a lower price for the same item you have ordered within six months of your purchase date will refund the difference as well.

    To request your partial refund simply e-mail us a link to the same product on our website, or on our competitors website within six months from the date of your order and we will process the credit accordingly.

    Our 100% Price Guarantee has some limitations:

    • You must purchase the item from our website before requesting your Price Match Guarantee
    • Promotions such as rebates and buy one, get one free offers are not eligible
    • The item must be in stock on the competitors website
    • The competitor must be an online store, they may not have a retail location
    • The website can not be a discounter or auction website (ie; eBay, overstock, etc..)
    • The competitor must be an Authorized Retailer of the product in question
    • The Price Match Guarantee includes the item price and the shipping charges, it excludes sales tax

    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 5 business days) we will process the charges and submit the order for shipment.

    Order Shipment If your order is received, the inventory is in stock and your credit card information matches the information, In most cases, we can ship within 5 business days. We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address your provide when checking out.  If you do not receive tracking information from us within six business days of your order please email us at info@skygazeoptics.com.

    Miscellaneous Shipping Information

    • We cannot ship to PO boxes.
    • Non-standard shipping surcharges will apply to isolated service areas, such as remote areas, areas not readily accessible by a delivery vehicle, islands, Hawaii & Alaska etc., as defined by the shipper. These circumstances occur less than 1% of the time.

    Delivery Times

    You can estimate the deliver time to your home or business by viewing the "Ships Within" information listed with every product. This refers to the time from when you place your order, to the time it leaves the warehouse. The total delivery time for your order is calculated from the time your order is placed, until you receive it. The diagram below shows how the total delivery time is broken down into pre-ship processing time and shipping time. 

    Processing time is the time it takes from when you submit your order to when the product leaves the warehouse. The "Ships Within" time frame listed with each of our products on the website applies to this time frame. For example, if your order a product that reads "Ships Within: 2 Weeks", this means that the product typically leaves the factory within two weeks. If there will be any additional time required to process your order, we will notify you immediately to confirm the delivery period. This time is needed for products that are shipped to you directly from our manufacturers. The manufacturers need this time to fulfill your order. In some cases, the items are custom built.  Shipping time is measured when your order leaves the warehouse to when it arrives at your address. Actual shipping time can vary between 2-5 business days. Contact our helpful customer service experts at (888-264-2244)  for more information.


    Did your shipment arrive damaged or defective?

    Please report damaged or defective merchandise to us immediately by email phone. Photos of the items and the packaging would be greatly appreciated. This will speed up our resolution process. We strongly recommend at the time of delivery, if your notice any cartons that look dented, crushed or just not right, open them immediately and inspect the contents. If the contents appear to be damaged, please notate it on the delivery ticket, refuse that item only and contact us as soon as possible for instructions.

    Brands/Products that do NOT qualify for our 30 Day Return Policy:


    APM products do not qualify for our 30 day return policy.

    Custom Orders

    Additionally, items that are special ordered, customized, or engraved - cannot be returned or refunded under our 30 day return policy. 

    If your engraved item needs to be repaired within 30 days of purchase, please reach out to us and we will have the product repaired or replaced, re-engrave if necessary, and return it to you in new condition.

    Customer Reviews

    Based on 1 review
    Tom Diana
    Very good overall

    The scope is well-built. Optics are good. Diffraction rings are symmetric on both sides of focus. The field is essentially flat when imaging with a camera using APS-C sized sensor. The only significant issue was that there was insufficient back-focus, An extension tube was required to achieve focus with a DSLR. This could be an issue when using a large imaging train. It seems that the tube design is better suited for visual observation (using a large star diagonal).

    APM products returns are subject to a 20% Restocking fee to ensure we can continue to offer exceptional value consistently. 

    If there is any quality control issue to be addressed, we ask that you follow the instructions on our shipping and returns page and we will make sure the issue is handled.

    Some APM products are subject to import duties and/or taxes which you will be notified to pay at the time of delivery. 

    We do our best to take care of your shipping costs; however, special order products like these may come with a small additional cost to our customers. 


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