APM Doublet SD Apo 140 f/5,25 - 42mm image circle FPL53 optical Tube with 2.5" focuser
The new, compact all-rounder from APM with two-lens FPL 53 optics with Riccardi M63 Reducer
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.The special feature of the 140mm SD APO:
- Very high quality processed and of convincingly good optical quality
- Colorless optics with FLP53 glass
- Precise 2.5" focuser with 1:10 mirco reduction for heavy accessories
- With f / 7 ideal for visual
- With f/5,25 ideal for photographic purposes
- CNC tube rings
- Carry handle
- Very good value for money
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. With the new 140 mm SD Apo we believe we have created an Apochromatic Refractor of incomparable performance and value in its category.
With the Reducer you get an effective focal length of 735mm and an focal ratio of f/5,25.
The adaptation for the Reducer is included in the package:
- APM-Tilt-adj-M63
- APM-RIRED-M63-small
- Adapter : Okularauszug to Tilt-Adapter
- Adapter Riccardi Adapter M48 Gewinde
- Adapter M48 to T2 Gewinde
- Optical Tube
- 1 Pair of Tuberings with handle
- 2.5" Focuser with 1:10 Microfocusing
- APM Riccardi M63 Reducer
- APM Riccardi APO Reducer Adjustment Flange M63 Adapter
- Losmandy-Style Dovetail
- Shoe for Finderbracket
Products specifications
| Coating | Multicoated |
| Focal ratio | f/7 |
| Viewfinder | none supplied |
| Connection to eyepiece | 2" |
| Tube material | Aluminium |
| Backfokus | 180 mm |
| Length of dewcap | 290 mm |
| Focuser | 2.5" APM Focuser, 360° rotatable, with 1:10 Micro Focusing |
| Color | black / white |
| Type of telescope | Doublet ED-Apochromat |
| Dewcap diameter | 186 mm |
| Lens | Doublet ED Apo with FPL-53 Element |
| Aperture | 140 mm |
| Focal length | 980 mm |
| Resolution | 0.83" |
| Limit value | 12.5 mag |
| Max. useful visual power | 280 x |
| Transportation length | 830 mm |
| Length during observing | 1030 mm |
| Total weight | 9,0 kg ( with Tuberings, handle, 3" dovetail ) |
| Tube diameter | 157 mm |
| Focal ratio | f/7 und f/5,25 with Riccardi Reducer M63 |
