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This optical scheme has been implemented to provide the user a highly correct and precise instrument, a dedicated configuration for the deepsky imaging that allows to photograph very faint objects with very short exposure times.
The autoguide with this astrograph in many cases it is not necessary (a precise polar alignment of the mount is often sufficient), the short focal ratio and its large diameter, making it bright and fast. The useful optical window is 43mm, it's geometrically and chromatic well corrected, perfect for imaging with DSLR or CCD cameras even with large sensors. The housing of the camera with the relative adapters (supplied as standard) allows to use any type of sensor, DSLR or CCD. In order to install the filters, an adapter ring is provided, to be screwed before the camera.
This astrograph is equipped with a high-quality focusing system. The micrometric focuser Feather Touch is one of the best on the market, it's installed as standard on all Rowe-Ackermann telescopes in order to provide the user a high-quality tool not only optically but also mechanical. Since the large size of the mirror, a 12v powered fan is installed to speed up the optics acclimatization.
- Celestron Rowe-Ackermann 11" optical tube
- Adapter for CCD T2 (42mm)
- Adapter for CCD 48mm
- 12V fan for acclimatization
- Micrometric Feather Touch focuser
- Dovetail bar Losmandy type
|Optics||Primario sferico, con lastra correttrice e gruppo spianatore|
|Focal Length (mm)||620mm|
|Field flattener/corrector||Included and not removable|
|Focuser||Interno (spostamento del primario)|
|Eyepiece holder||50,8mm with 31,8mm reducer|