telephoto lens for astrophotography

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$Picture of Askar 230 mm f/4.6 APO Telephoto Lens - Traveler´s Refractor - Guide Scope and Spotting Scope$

Askar 230 mm f/4.6 APO Telephoto Lens - Traveler´s Refractor - Guide Scope and Spotting Scope

With the FMA230, Askar has created a powerful triplet APO refractor with unique visual and photographic application possibilities

In just a few steps, the APO telephoto lens becomes a compact astronomical telescope, a guiding tube or a powerful spotting scope for landscape observation.
Aperture 50 mm
Triplet ED lens with two APO elements for a color-pure image
Photographic focal length 230 mm (with 4-element corrector) - focal ratio f/4.6
Focal length for observation 275 mm
The photographic field of view is designed up to full format
Precise helical focuser on the lens for accurate focusing - with lock
Weight 1045 grams
Practical M48 mount with 55 mm working distance (as telephoto lens)
Suitable for 1.25" and 2" accessories for visual observation
Vixen / EQ5 style multifunction plate
Very well suited for mobile astrophotography with photo trackers like the Skywatcher Adventurer
Also suitable as a powerful guiding telescope
With a few simple steps the FMA230 becomes a compact spotting scope for observing with 1.25" or 2" accessories

899.00 €

Estimated delivery time : 1-4 days

SV555 Astrophotography Telescope APO 54mm f/4.5 Astrograph Camera Lens for Full Frame Sky Imaging w/ EAF Mount Kit

More clear image; APO astro camera lens consists of a 3-group 5-piece petzval objective lens structure; which includes a set of triplet lens; bringing you a clearer image;
44mm full-frame; This telephoto lens can avoid aperture blocking; whether mirrorless camera; SLR camera; or deep-sky camera; you can photograph clear image without trouble;
Mounting kit available; SV555 astrograph is equipped with a bracket and belt for EAF; you can get an accurate angle to photograph quickly and conveniently;
Single-speed focus; the telescope camera lens supports fine adjustment; enabling you to adjust the photography angle accurately for fast shooting;
Various aperture range; the astronomical photography lens can adjust the aperture from F22 to F4.5; meeting a variety of use needs; the included graded adjustment ring and scale also make it convenient for photography by preventing accidental touching;
Compatibility; SV555 telescope camera lens features an M48x0.75 filter thread to install the 2" filter; additionally; the V-style & Arca-Swiss quick-release system is compatible; flexible and easy to use; enhancing the efficiency;
Convenient to use; the APO astro camera lens is featured with a handle; bracker; and dovetail plate; making it more convenient to use the lens when shooting.

549.00 €

Estimated delivery time : 3-4 weeks