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Our APM 115mm f7 apo is the successor, so to speak, to the now discontinued APM 100/800, so we differ from the many 4" apos on the market by having somewhat more aperture and with the resulting visibly higher resolution, but also achieve an optical quality and chromatic aberration correction that no other apos of this size even come close to.
Even with a focal length of only 805mm, it can still achieve an extremely wide maximum 3.4° field of view when using a 2" wide angle eyepiece. Also, this model will never show even a hint of colour fringing no matter to what magnification is used. This is of particular importance to planetary observing, where any residual chromatic aberration would lead to a smearing of the finest details.
Delivery includes tube ring clamps, GP rail, 50mm finder bracket and a retractable dew shield. It uses a 2" FeatherTouch focuser (made in United States) with a 1:10 micro reduction ratio. The 2" focuser is screwed into a drawtube, which creates a usable back focus of 240mm, which in turn allows the use of a bino-viewer with a 2" star diagonal, without having to use a Barlow lens. The OTA is optimized for use with a 2" star diagonal.
Technical data:
- weight including tube ring clamps: 6.45kg
- OTA diameter: 135mm
- dew shield diameter: 156mm
- drawtube between focuser and OTA: 100mm
- tube length with extended dew shield and extended draw tube: 780mm
- tube length with extended dew shield and retracted draw tube: 707mm
- transport length 627mm
- back focusing, with draw tube extended: 146mm
- back focusing without extension: 246mm
- bino-viewer capable
Included in delivery:
- lightweight OTA
- retractable dew shield
- 50mm finder scope bracket
- quick-release
- tube ring clamps
- GP mounting rail
- 2"/ 1.25" adapter
- interferometric test protocol
- 2" Starlight FeatherTouch focuser with 1:10 micro-reduction gear, 360° rotatable with draw tube
- draw tube between focuser and OTA for quick focusing
It not only matters which telescope you buy but also where you buy it. Our additional services:
- We are a leading telescope dealer and know the devices we sell. Our customer service team will gladly help you after your purchase if you have problems with assembly or operation.
- We provide a copy of the 80-page Telescope ABC beginners handbook with every telescope.
- We also provide an edition of the exciting astronomy magazine, “Sterne und Weltraum” with each telescope.
