Please note: Last regular shipment before Christmas is on December 19, 2024, after which only express shipments can be sent. Our store is closed on Christmas Eve and New Year's Eve. (Close)
We can offer you a range of very high quality refractors in this category. These include e.g. our two- and three-lens APM Apo instruments, our astrograph series, available as APM or APM-LZOS models. Equipped with Riccardi reducers / correctors or as a high-end version CNC LW II with Feathertouch extracts. All around excellent instruments that should leave no wishes.
The entry-level APO refractor ED80Sf Porta II features high-grade glass
and quality components. Coupled with a medium f/7.5 focal ratio, the ED
?S? series provide a sharp, color-free image of high contrast.
New Vixen SD81SII high performance apochromatic refractor with FPL53 SD-glass for demanding observers and astrophotographers with improved optical properties
From the beginning, the goal was to create the best possible design for
an affordable, small, lightweight, and fast Apochromatic refactor for
astrophotography.
William offers with the REDCAT61 Astrograph a very well corrected telescope for astrophotography up to full frame format.
Aperture 61 mm / Focal length 300 mm / Focal ratio f/4.9
Petzval design with chromatic aberration free FPL53 objective (4 elements in 3 groups)
Very well corrected and illuminated image field up to full frame format - the corrector is built in - no more adapter battle necessary
Camera connection via M48 male thread (suitable adapters are available) - working distance 55 mm
360° rotation of the camera for the right display window
Focusing via internal focusing (William Internal Focus Design - WIFD) as with telephoto lenses
Tilting option for individual adjustment of the camera sensor to the telescope
Flexible dovetail bar at the base (long version), suitable for Vixen style and Arca-Swiss saddle plates, in addition with 1/4" female photo tripod thread
Nylon carrying bag and Bahtinov mask for astrophotography are included in delivery
This three-lens apochromat with FPL-53 element and STM coating delivers
color-pure, crisp images! Stars are pin sharp points, bright objects
like moon and planets show no color fringes, but a lot of details!