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APM Doublet SD Apo 140 f/7 FPL53 3.7"

APM Doublet SD Apo 140 f/7 FPL53 3.7''
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Price:  £3,049.00(Inc. 20% VAT)
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Product Code:  APM140-7-3.7ZTA
Manufacturer:  APM


The new APM 140mm f/980mm Doublet is a mold breaker with high quality. We have painstakingly engineered an optical and tube solution to bring you APM quality at an unheard price. The new 140- SD Apo features a Doublet lens cell using SD glass FPL-53 to maximize performance. Our innovative combination of materials and design has resulted in optical performance far beyond the normal for a telescope of this price. As with all APM telescopes consistency is assured and each telescope goes through an interferometrical test at the 532nm (green) wavelength before shipping.

With 980mm focal length, the 140-SD Apo is an impressive all-rounder. From intricate double star observing to high contrast detailed planetary views, this new scope will introduce a whole new group of Astronomy enthusiasts to APM quality.

Traditional APM quality has been applied in all areas. The new 2.5" focuser is a Rack and Pinion type, with 1:10 focusing. It remains rigid under high loads making it suitable for imaging. The attention to detail extends to areas like the 2" and 1.25" eyepiece adapters. These use a new design of collar clamp, far superior to the common brass compression rings found on lesser designs. Of course, if you would like to use a Starlight Instruments Feather Touch (model FTF3035B-A) then this can be supplied as an option, for that reason the tube end has an thread M109 x 1 and M95 x 1 to accept a 3" or 2.5" Starlight focuser.

Imaging accessories for the 140-980 include a 2.5" (Order Nr. TSFlat2,5) field flattener which maintains focal length. There is also a dedicated Massimo Riccardi designed APM Reducer. This changes the focal length by a factor of x0.75, resulting in a 735mm focal length and fast f5.25 aperture.

With the new 140 mm SD Apo we believe we have created an Apochromatic Refractor of incomparable performance and value in its category.

Delivery contains:

  •     Optical Tube
  •     1 Pair of Tuberings with handle
  •     2,5" Focuser with 1:10 Microfocusing
  •     Losmandy-Style Dovetail
  •     Shoe for Finderbracket

Specifications:

Type of telescope:
Doublet ED-Apochromat
 
Lens:
Doublet ED Apo with FPL-53 Element
 
Color:
black / white
 
Tube material:
Aluminium
 
Aperture:
140 mm
 
Focal ratio:
f/7
 
Focal length:
980 mm
 
Coating:
Multicoated
 
Resolution:
0.83"
 
Limit value:
12.5 mag
 
Max. useful visual power:
280 x
 
Backfokus:
180 mm
 
Focuser:
2.5" APM Focuser, 360¶ø rotatable, with 1:10 Micro Focusing
 
Connection to eyepiece:
2" / 1 1/4" with adapter
 
Viewfinder:
none supplied
 
Tube diameter:
152 mm
 
Length during observing:
1030 mm
 
Transportation length:
830 mm
 
Dewcap diameter:
186 mm
 
Length of dewcap:
290 mm
 
Tube weight:

19.38 lb incl. Tuberings

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