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APM Doublet SD-Apo 140 f/7 FPL53 OTA With 3.7 " Focuser
APM Doublet SD-Apo 140 f/7 FPL53 OTA With 3.7 " Focuser
APM Doublet SD-Apo 140 f/7 FPL53 OTA With 3.7 " Focuser
APM Doublet SD-Apo 140 f/7 FPL53 OTA With 3.7 " Focuser
APM Doublet SD-Apo 140 f/7 FPL53 OTA With 3.7 " Focuser

APM Doublet SD-Apo 140 f/7 FPL53 OTA With 3.7 " Focuser

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Estimated Arrival: Between Jul 03 and Jul 09. *ETA to USA Only

Shipping & Returns: Satisfaction guaranteed 30 day return policy.


The new, compact all-rounder from APM with two-lens FPL 53 optics.

The new APM 140mm f / 7 Apo impresses with its high performance. We have now succeeded in developing this telescope with high-quality optics and a solid tube at a sensational price. The new 140mm f / 980mm SD Apo has doublet optics with SD glass, one lens of which is made of FPL-53, which brings maximum performance. This new, innovative combination leads to a color correction that is far above the usual in this price category. In order to guarantee the typically high quality of APM telescopes, each optic goes through an interferometric test at 532nm (green) before shipping.

The instrument is delivered with a massive 3.7-inch extension. The pull-out is particularly suitable for heavy accessories and offers an absolutely vignetting-free image even with large-format chips.


  • Very high-quality workmanship and convincingly good optical quality
  • Pure color optics with FLP53 glass
  • Precise 3.7 "excerpt 1:10 for heavy accessories
  • With f / 7 ideal for visual and photographic purposes
  • CNC pipe clamps
  • Carrying handle
  • Very good price/performance ratio

With a focal length of 980mm, the 140mm SD-Apo is a real all-rounder. The observation of close double stars with high contrast up to detailed planetary observations will be a lot of fun with this device. In addition, this new apo is very light at only 9.8 kg 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 under high loads and is therefore also suitable for photography. The attention to detail can also be found in the enclosed 2" to 1.25 "eyepiece adapter, the has a completely new design that clamps the eyepiece evenly and thus works much better than conventional adapters with a simple brass clamping ring and screw.

As an optional photo accessory for the SD APO 140mm f / 7, we recommend our Riccardi Flattener APO Reducer 0.75xM82 (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 140mm SD-Apo we offer you an apochromatic refractor of excellent performance at an unbelievable price.


  • Optical tube
  • 1 pair of pipe clamps with handle
  • 3.7 " focuser with 1:10 reduction
  • Losmandy-Style prism rail
  • Finder shoe

Some of our APM products are shipped directly from Germany. Before placing your order, please review the “APM Duties & Returns" tab  


compensation Multicoating
Focal ratio f / 7
Viewfinder none included
Eyepiece connector 2 "
Tube material aluminum
Back focus 180 mm
Tube diameter 152 mm
Dew cap length 290 mm
colour black-and-white
Telescope type Doublet ED apochromat
Dew cap diameter 186 mm
lens Doublet ED Apo with FPL-53 element
opening 140 mm
Focal length 980 mm
Resolving power 0.83 "
Limit size 12.5 mag
Max. Sensible magnification 280 times
Transport length 830 mm
Observation length 1030 mm
Focuser 3.7 "extension, pinion 360 ° rotation
total weight

9.8 kg (with pipe clamps)


APM Duties & Returns

Because of the special nature of APM orders, there are some differences in fees and returns. We take care of the shipping costs for you but an additional small import fee may apply to our customers. We appreciate your understanding as we do our very best to give our customers access to a wide variety of high-quality telescopes and binoculars, including special order brands like APM!

For additional information, please contact us at

APM Duties

Some APM products are shipped directly from Germany and are subject to import duties upon entry into the US that you will be notified to pay at the time of delivery.

For high-value orders, the freight company may contact you for your SSN/Tax ID and to request power of attorney to allow them to handle import paperwork on your behalf.

APM Returns & Refunds

Because some of APM’s products are shipped directly from Germany, we are not able to cancel your order once it has been placed or offer returns at this time.

In the case that your telescope arrives with a manufacturing defect, it will need to be shipped back to the manufacturer in Germany for them to repair it.

When your order arrives, please check for any visible damage to the packaging! In the case that your order arrives with any damages acquired during transit, please notify us immediately and we can file an insurance claim on your behalf. When signing for a damaged package at delivery, note on the signature form that it is damaged, otherwise we will not be able to process the insurance claim.


We know that once you've placed your order, you are anxious to receive it! We make every effort to get your order shipped out to you as quickly as possible.

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. We will process the charges to your credit card and your order 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

Standard shipping time in the US is between 3-5 business days, though it can vary slightly depending on the destination. We typically For updates on your shipment you can enter your tracking number here.

We distribute nationwide via UPS and Fedex. Unfortunately, at this time we are not able to provide expedited or international shipping.  

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