Agena AstroProducts Thanksgiving Sale

APM 2" 1.5x Coma-Correcting Telecentric Barlow # APM-Komakorr-Barlow2

Our Price: $415.00
Free shipping for this item in the US Click here for more info

Continental US Customers:
All items we sell ship for free within the Continental US. Shipping will be via the cheapest shipping method which will vary depending on the items in your order. During checkout, you may also be shown other optional faster shipping choices.

US Customers in Hawaii and Alaska:
Free shipping applies to almost all products. A few large telescopes and mounts are excluded from this free shipping offer. For these items, please contact us to obtain a shipping quote before you check out using the online shopping cart.

International Customers:
Free shipping does not apply to international orders. During check-out, you will be presented with several shipping choices and costs. However, the export of some items may be restricted outside the US due to size or manufacturer restrictions.

In Stock (1 Available)
Ships by Next Business Day
Our Product ID: OBAR-AM-KK-Barlow2
Manufacturer SKU: APM-Komakorr-Barlow2
Item Can Ship: Worldwide
APM 2" 1.5x Coma-Correcting Telecentric Barlow # APM-Komakorr-Barlow2

More Views

Please Note: This item has a 1.5x magnification factor. It is NOT 1.6x as imprinted on the actual product itself.

Product Details

Original APM description below:

APM 2 inch Coma-Correcting Telecentric 1.5x Barlow

by the well known physicist and optical designer Philipp Keller

About 2 years ago APM Telescopes introduced the coma-correcting 2.7 times Barlow designed by Gerd Düring, which enjoys great popularity.

New Design

When our customers asked for a 2 inch version with a smaller magnification factor, APM Telescopes let the well known physicist and optical designer Philipp Keller calculate a new 1.5x Barlow.

All of today's knowledge was incorporated to optimize the optical design. The telecentric design prevents that the distance has to be individually adjusted for each eyepice. Just insert the eyepiece into the optional 2-inch adapter sleeve and automatically have the optimum distance.

Large Backfocus

As already for the Barlow by G. Düring the design was calculated to yield a large back focus, in order that it can be used as an optical glass path corrector with coma-correcting effect combined with binocular viewers. The large back focus allows the use of an off-axis guider + filter + CCD to take photographs with full format chips.

Technical Details

  • Magnification 1.5 x
  • Coma correction
  • M54 x 0.75 male thread and M48 x 0.75 female thread (eyepiece/CCD side)
  • Telecentric design with 4 lenses
  • Works as optical path corrector 1.5x for bino-viewers
  • Large imaging field for full format chips
  • 100 % illuminated Image Circle: 30 mm diameter
  • Outward focus shift: 96 mm
  • Distance end M54 Thread to Focus: 95 mm

Delivery contents

  • Telecentric Barlow include 2" eyepiece adapter

Specifications:

  • Coating: Fully multicoated
  • Filter thread: 2"
  • Magnification: 1.5x
  • Optical design: 4 lenses
  • Backfocus: 105 mm (from centre last lense)
  • Fully corrected field: 44 mm
  • Fully illuminated field: 44 mm