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The V60 objective lens and V80 objective lens, both adopt a triplet APO design, two of which are ED glass, which can effectively eliminate chromatic aberration and increase image clarity. The V60 native focal ratio is f/6, and the focal length is 360mm. The V80 native focal ratio is f/6.25, and the focal length is 500mm. V is equipped with three additional accessories that are adjustable to 60mm or 80mm scales through rotation. The rear end of each accessory has M48 and M54 adapters with 2" built-in filter thread and the back focus is a standard 55mm.

Telescope lensconcave or convex

The scope came with a great bag to keep everything together and was easy to set up with an ASIAir Plus and ASI EF. I am looking forward to being able to get some images as soon as things clear up.

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Telescope objective lensfocal length

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V extender, as the highlight of the product set, fully shows our none-stop innovation spirit and fulfill a part of the market vacant. V extender being used with the objective lens at the aperture of 60mm, the focal length is 446mm and the focal ratio is f/7.43; at the aperture of 80mm, the focal length is 600mm and the focal ratio is f/7.5. It supports both the connection to objective lenses of different apertures and the effective extension of the focal length, allowing clearer images to be captured and more detail to be observed.

Nov 8, 2023 — CFN scientists design a new, light-sensitive, hybrid material to improve the semiconductor fabrication process for microelectronics.

I received the Askar-V a few weeks ago from All-Star Telescope and as usual, the order process, shipping etc was efficient and quick. The scope is very solidly built relative to others that I own and the ability to change focal length is the main reason for the purchase. It is incredibly easily to switch between the various options, but unfortunately I have not been able to try it out yet due to the smoke from forest fires and cloud. Hopefully this will change soon.

Objective lens telescopefunction

Brighting Star | APS-C Size, weight: 66*59.5mm, 277g Mount: Canon EF-M, Nikon Z, M4/3, Sony mount, Fuji X Scene: starry sky, night scene, scenery 97?? super ...

The focal length of a mirror and a lens can be calculated using 1/do + 1/di = 1/f, where do is the object distance, di is the image distance, and f is the focal ...

*Attention:When using the V60 objective lens, you can rotate the accessory to 60 scales to use; when using the V80 objective lens, the accessories should be rotated to 80 scales to adapt to the different aperture sizes of the different objective lenses.

Most reading eye glasses give you a maximum magnification of 3X, but these optically correct magnifying glasses are stronger and the focal point is closer, ...

The V flattener improves field curvature, edge quality and reduces aberrations. When used with the 60mm objective lens, the focal length remains 360mm and the focal ratio is f/6, while when used with the 80mm objective lens, the focal length changes to 495mm and the focal ratio becomes f/6.18. The V flattener helps you make clearer and more professional photos. It is an indispensable aid to high quality photography.

Here are some simulated views of common objects. Results with your telescope will vary with viewing conditions, obrits, equipment and more.

2020326 — Perform calculations involving diffraction and interference, in particular the wavelength of light using data from a two-slit interference ...

In a word, this telescope is a highly cost-effective choice whose advantage of multi-function caters for all level amateurs. Whether you are new to astronomical telescopes or an experienced amateur, you will find something to suit your needs in V. The Askar V is an absolute must-have telescope for you.

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Super-light fully featured mount for the ultimate grab-and-go setup. It builds on the enormous success and reliability of it's bigger brother, the ...

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The overall appearance of the Askar V is simple and generous, the color scheme of ivory white and silver makes it cool and elegant, and every detail of the design reflects exquisite craftsmanship and quality. Askar V not only has an elegant appearance and high-quality mechanical design, but also has excellent star performance and rich function configuration.

Complete meterless laser measurement systems reduced to the size of a USB memory stick.

Oct 24, 2022 — It takes light from the objective lens and re-magnifies it to show a large image. In most cases, the ocular lens magnifies 10x or 15x. Condenser ...

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Using the reducer, can effectively reduce exposure time and expand the field of view to meet more of the shooting requirements. When the reducer is used with V60 objective lens, the focal length is reduced to 270mm, and the focal ratio is increased to f/4.5; when the reducer is used with V80 objective lens, the focal length is reduced to 384mm, and the focal ratio is increased to f/4.8.The V reducer unlocks the new performance of the Askar V, bringing more convenience and possibilities for your wide-field deep sky astrophotography.

EyepieceTelescope

Finding the right new telescope eyepiece can be a game changer.  This post will help you to pick the best telescope eyepiece for your needs.

You may have heard of the ASIAir, but if you haven't, it's a groundbreaking device that drastically simplifies astrophotography. This will allow y...

Whoever said use the 0.5x filter on your pet, i hope your pillow is cold on both sides · Best · Top · New · Controversial · Old · Q&A ...

Whether you are a first timer needing help with setting up or an enthusiast that can't quite make that one thing work, our expert staff are ready to support your needs. With decades of knowledge and first hand experience we've been there and we can help you through it!

DSO imaging cannot live without long exposure, and long exposure cannot live without guiding. To reach more accurate guiding, Askar launches a new 32mm F4 Guide Scope. It is optimized in the structure, providing users with better imaging quality on the base of good guiding ability.

You can trust purchasing and delivery with All-Star Telescope. All of our transactions are 100% secure and Level 1 PCI DSS compliant thanks to Shopify's ShopPay platform. For additional protection, we insure 100% of the value of every shipment we make. If it get's lost during shipment, we replace it. If it gets damaged during shipment, we replace it. We make sure your product arrives exactly as you would expect it to; we promise.

V comes with new scaled 360° rotator and finder base, 1.25” and 2” visual adapters, supporting high-quality visual observation. Multifunctional handle design makes it more portable and easier to connect to vixen style finder base and accessories.

May 29, 2023 — USB 1.0 and 2.0 were the first versions, with 2.0 supporting a maximum transfer rate of 480 Mbps. USB 3.0, also known as USB 3.1 Gen 1, ...

Save yourself money and headaches with integrated guiding in this excellent deep sky camera. It's just a souped up 2600mc that will let your mount ...