Manufacturer: Askar Sharpstar
Product number: ASZ4

EUR 1.849,00RRP EUR 2.645,00you save 30.1% (EUR 796,00)


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Askar Sharpstar Z4 100 mm f/5.5 6-Element Flatfield Apo
According to the users´ and market demands, Sharpstar has launched an integrated astrograph - Z4. It has an aperture of 100 mm and the focal ratio is f/5.5. Z4 is a sextuplet astrograph with three pieces of lens at the front and three pieces at the back, and two of them are ED glasses.

Just like other series of Sharpstar astrographs, Z4 is designed as self-flattened so there is no need to calculate the back focus. You can just make the target stay at the focus, and the optical system is perfect for imaging. It is ideal for capturing stunning wide-field images of the deep sky over a 36 mm (APS-C) image circle.

For the price, this fast apochromatic telescope offers excellent value and can approach the performance of telescopes that cost three or four times as much. This is especially true when matched with astronomy cameras with smaller 1" and 4/3" sensors, but the Z4 is not recommended for use with full-frame cameras.

The appearance of Z4 breaks through the previous style of Sharpstar with its matte gray coating. Light gray lens tube plus dark gray focuser and tube ring, make the astrograph looks calm but vibrant. The tube ring has a handle on the top which is easy to carry and assemble. The handle is designed as a slot on which you can mount a finder base, etc.

The entire tube has a length of just 482 mm with the dew shield retracted. It weighs 4.3 kg. This astrograph has the back focus of 55 mm, so common M48-rings will work fine when using DSLR cameras and you can use astronomical cameras with accessories.

Z4 uses a large 3.4" focuser with a 1:10 fine adjustment knob and a 360° rotator for easy focusing and angle adjustment. It has M86, M68, M54, M48 adapters, and the M48 one has an internal thread that can fit 2" filters.

A 300 mm Vixen-style dovetail plate makes it easier to balance on the equatorial mount.

Astrophotographic results obtained with this telescope on Astrobin
Here you can find some astrophotographs made with this telescope model: Link to Astrobin
Objective lens:Fully air-spaced sextuplet apo (including two ED glasses)
Aperture:100 mm
Focal ratio:f/5.5
Image circle:36 mm
Focuser:3.4" rack and pinion, dual speed
Back focus:55 mm from the M48 thread
Rear-end thread:M48x0.75 male thread
Adapters:M86x1-M68x1, M68x1-M54x0.75, M54x0.75-M54x0.75, M54x0.75-M48x0.75 (with M48x0.75 filter thread)
Lens hood:Retractable
Total length:482 mm
Weight of tube without tube ring and dovetail bar:4.3 kg
Weight tube incl. tube ring and dovetail bar:5.6 kg
Gross weight incl. case and all accessories:9.3 kg
Telescope
Standard finder shoe
Tube ring
Dovetail plate (Vixen style)
Handle
4-piece photographical adapter
Warranty card
Manual
Hard case

Astrophotographic results obtained with this telescope on Astrobin
Here you can find some astrophotographs made with this telescope model: Link to Astrobin
Manufacturer / Importeur:Teleskop-Service Ransburg GmbH
Street:Von-Myra-Str. 8
ZIP / City:85599 Parsdorf
Country:Germany
Telefon number:+49 89 99228750
Email:info@teleskop-service.de
Website:www.teleskop-service.de
Safety informations: PDF Download


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