No tweaking was needed at all, and there were pin sharp stars all the way out to the edge of the field. It really is like having a mm triplet apochromat in your hands, but for a fraction of the cost" The exciting new Maksutov-Newtonian from Sky-Watcher is just what astrophotographers and serious visual observers have been looking for. The Maksutov-Newtonian design combines the best features from the Newtonian Reflector and the Maksutov-Cassegrain to create a telescope design that provides truly stunning image quality, providing corporate fun committee names, perfectly flat images, free from false colour.

The Maksutov-Newtonian design provides large aperture Apochromatic performance, with exceptional field correction, in a compact, amazingly affordable package. Stars appear as classic pinpoints across the entire field. Perfectly optimised for modern DSLR cameras. The premium optics are housed in a robust rolled-steel tube for excellent mechanical integrity.

Five internal knife-edge baffles are included to eliminate internal reflections and further enhance contrast. Compared to a similarly sized Schmidt-Newtonian, the Maksutov-Newtonian yields a sharper and more contrasty image.

190mn focal length

Naturally, the Maksutov-Newtonian is an excellent visual performer too!! The prices listed on this website are U. Prices may vary from dealer to dealer. Please contact your nearest stockist for firm pricing information. As we are purely a distributor, we regret we are unable to sell directly to the public. Specifications subject to variation due to later production changes. No part of this website may be reproduced without the written permission of OVL.

What is Focal Length and Which Lens Should I Use?

To me the Sky-Watcher range of instruments are very good indeed, and suited to amateurs of all kinds — and they are not priced out of the market! Excellent value. Use them and enjoy them. Silicon dioxide produces a much more durable coat than silicon monoxide but requires specialized equipment to apply it and is therefore more expensive.

Protection is needed, because in most reflectors, the mirror is open to the elements and deterioration of the reflective layer reduces the resolution of the telescope.Telegram Me. I love to use wide-angle lenses in my landscape photography.

To go wide, though, means that you will face a few challenges. One of them is that the objects in the middle of the frame are diminished. A mountain, for example, will look significantly less impressive shrunk down in the middle of the frame. There are several ways you can overcome this. One of them is focal length blend. The scene below is from Romsdalen, Norway. I captured the image in October during a very beautiful sunrise. I used the Pentax K-1 and the Pentax 15—30at a focal length of 15mm.

The three peaks in the middle of the frame are impressive mountains, but at 15mm they look tiny and modest. A few minutes later I shot a 30mm image of the scene as you can see in the next image.

The mountains are now better sized. Shooting while having a focal length blend in mind is straight forward. Changing between prime lenses is just too cumbersome and time-consuming. The real challenge is how to blend the two images.

This can be a pretty time-consuming process. I start out with looking for a line I can use as a blending line.

The image below shows how I was thinking when I prepared for the blending job. I have marked the line with white. In Photoshop, I started out with the lasso tool to draw the line I needed.

It does not need to be a very precise selection. It depends on the image and the scene. The next step is to use the brush tool to fine-tune the transition line. There will also be some cloning work involved to attain a good and natural-looking blend. Just for reference, I would characterize the image above as a difficult focal length blend. I had to use a variety of techniques and approaches when I worked the image.

Editors Choice on both National Geographic and Fstoppers. To embark on a project like this means that you will face some frustrations along the way. Trial and error are necessary for the end result, and patience. It is also a great advantage if you know how to use masks and the various selection tools in Photoshop. I would also advice you to start out with a simple scene, like for example a mountain which rise up behind a lake or ocean.Focal length, usually represented in millimeters mmis the basic description of a photographic lens.

The focal length of a lens is determined when the lens is focused at infinity. Lens focal length tells us the angle of view —how much of the scene will be captured—and the magnification —how large individual elements will be. The longer the focal length, the narrower the angle of view and the higher the magnification. The shorter the focal length, the wider the angle of view and the lower the magnification.

There are two types of lenses-prime and zoom. Prime lenses have a fixed focal length and zoom lenses have variable focal lengths. Standard lenses are popular as they are closest to the angle of view we humans see. They tend to use large apertures and allow a lot of light to enter the lens which makes them fast in low light conditions. Standard lenses are the popular choice for a wide range of photography including portraiture, nature and low light situations where the photographer can not use a flash or is looking to capture the scene with available light.

They allow the photographer to produce close crops on the subject. In the case of portraiture a telephoto allows the photographer to take the photo at a distance that does not intrude upon the subject. These lenses are popular for subjects such as flowers, insects and small products. By clicking Sign Up, you are opting to receive educational and promotional emails from Nikon Inc. You can update your preferences or unsubscribe any time.

Search Articles. Glossary Off On. What is Lens Focal Length Focal length, usually represented in millimeters mmis the basic description of a photographic lens.

Standard Lens FX format approx. Telephoto Lens FX format approx. Super Telephoto Lens FX format approx. Did you like this article? More Like This More articles like this. Article Collections. Articles like this, right in your inbox. First Name required. Last Name required. Email required. Popular Topics. More from Nikon.One of the most important reasons why you buy a lens is down to the focal length.

This lets you know how close you need to be in relation to the subject you are capturing. A longer focal length is necessary for objects further away. A smaller focal length captures more of the scene in front of you. To understand focal length in four, easy steps, read on. Product links on ExpertPhotography are referral links. If you use one of these and buy something, we make a little bit of money.

Need more info? See how it all works here. Knowing what focal length means in relation to your camera is very important when it comes to buying lenses. Lenses are divided into two categories based on whether they can zoom. There are the ones that have a fixed focal length prime lenses.

And there are those that have a variable focal length zoom lenses. In general, prime lenses are sharper and often have a wider aperture. These are great for low light conditions. Zoom lenses allow you to use one lens to cover a range of different photography fields. One lens means less time spent searching for and changing lenses.

There are advantages and drawbacks to both types of lenses. So, having a mixture of them gives you versatility and power. We can use the human eye as an example. Its focal length varies between 17mm and 25mm, depending on who you ask and who you examine. The area that we actively perceive is smaller, similar to a mm lens. The higher the number, the more zoomed your lens will be.

This is the case of simple lens designs like Double-Gauss.

SkyWatcher DS-PRO 190MN NEQ6 PRO Telescope

There are also plenty of complex optical designs that work differently. In many cases, that distance is not equal to the focal length.Stay safe. Maksutov Newtonian optics with the award winning NEQ6 PRO combined to provide a very high specification package for advanced visual and astro imaging applications.

Maksutov Newtonian design combines the best features from the Newtonian Reflector and the Maksutov-Cassegrain to create a telescope design that provides truly stunning image quality, providing high-contrast, perfectly flat images, free from false colour.

The Maksutov Newtonian design provides large aperture Apochromatic performance, with exceptional field correction, in a compact, amazingly affordable package. Stars appear as classic pinpoints across the entire field. Perfectly optimised for modern digital SLR cameras. The premium optics are housed in a robust rolled-steel tube for excellent mechanical integrity.

Five internal knife-edge baffles are included to eliminate internal reflections and further enhance contrast. The Primary Mirror is made of low thermal expansion Pyrex glass for a significantly reduced cool down time. Compared to a similarly sized Schmidt Newtonian, the Maksutov Newtonian yields a sharper and more contrasty image.

Naturally, the Maksutov Newtonian is an excellent visual performer too offering contrast an resolution usually only seen in high end apochromat refractors! With the user-friendly pushbutton hand control, locating and viewing the treasures of the night sky becomes as easy as a walk in the park.

The hand control allows you to point the telescope at a specific object or even tour the skies at the touch of a button. Even an inexperienced astronomer can master its variety of features in a few observing sessions. Total 13, objects. Buy Now. Send to a friend. In stock. Add to Cart. Further details Compared to a similarly sized Schmidt Newtonian, the Maksutov Newtonian yields a sharper and more contrasty image.

Total 13, objects. Delivery Information Delivery Schedule We are shipping orders but there are delays, workplace social distancing measures here, at our suppliers and with delivery companies is adding time to processing and shipping to keep everybody safe. Please contact us to check delivery times, all deliveries are now contact free.

190mn focal length

We ship each business day, orders received before lunch are normally shipped that business day. We also direct ship from our UK suppliers, this means we have access to thousands of products that can ship fast to our customers. Our Order Lookup system see link at the top and bottom of each page updates the order status in real time for you - simply by entering your order number and postcode. We will quote delivery charges to these areas where applicable prior to shipping this does not normally affect lower value items shipped by Royal Mail.The front Maksutov lens from Schott ensures that the telescope provides a very good image.

With a mm aperture, the telescope collects about X more light than the naked eye alone for a 7mm fully dilated pupil. The telescope is excellent for very high-contrast Lunar and planetary observingbut also offers great performance for DSO observing.

The Maksutov-Newtonian design is a modification of the Newtonian design in that it has a spherical primary mirror with a front-mounted, coated meniscus lens.

Although at first sight it is externally similar to a Newtonian telescope, it offers completely different imaging properties. This telescope has been specifically optimized for astrophotography and offers excellent correction over the entire field of view.

Even close to the edge of the field of view, stars are imaged as points and not as 'comets'. The image produced is quite similar to that of an apochromat. The advantage is obvious, because a Mak-Newtonian is many several times cheaper to buy than an apochomat. Also, this type of system does not generate any irritating colour fringes as is common with achromatic objectives.

This type of telescope is a so-called 'closed system'i. The use of diffraction generating secondary mirror spider vanes can also be avoided due to the meniscus lens. The 58mm wide secondary mirror allows a very good field illumination. The F5. The mm focal length means most objects can be imaged adequately. The half format chip, as is common in Canon EOS cameras, gives an image field of 1.

A 2 inch ball bearing Crayford focuserwith 1. Heavy cameras can also be safely attached. At only 10kg in weight, the OTA can be used on a large range of mounts. The selection of mount depends on how the OTA is to be used. The Skywatcher EQ-6 Pro mount is highly recommended for astrophotography. The OTA is also visually a real gem, featuring an elegant design for the both OTA and finder scope in an aesthetically pleasing shimmering black.

The advantages in a nutshell:. It is not only important which telescope you buy, but also where you buy it. We provide extra help:. About us Contact Terms Login.

Telescope accessories. More about astronomy. Other products. User Beginner Advanced Experienced amateurs. Popular Categories 10x42 Roof prism glasses 8x42 Roof prism glasses 8x32 Roof prism glasses 7x50 Porro prism glasses 8x56 Porro prism glasses Monocular with Zoom function with Image stabilizer Binocular accessories. Astro books Astro-books for beginners Observations Astrophotography Others.

Calendars Astronomy Calendars. Miscellaneous Kits Meteorites. Purchase vouchers Coupon at a value of 25 euro Coupon at a value of 50 euro Coupon at a value of euro Coupon at a value of euro Coupon at a value of euro Coupon at a value of euro. Miscellaneous Weather stations.The Sky-Watcher mm Starlux Maksutov-Newtonian is the telescope that astrophotographers and serious observers have been looking for.

The Starlux Maksutov-Newtonian high-resolution optical systems are multi-coated to maximize contrast and image sharpness.

This Sky-Watcher Starlux MN Maksutov-Newtonian telescope is a great way to introduce your entire family or friends to the astronomy hobby. You will discover new wonders of the night sky with this great telescope. Allows you to see fainter objects in the night sky.

The Mak-Newtonian design provides large aperture apochromatic performance with exceptional field correction in a compact, affordable package. Compared to a similarly sized Schmidt-Newtonian, the Mak-Newtonian yields a sharper image with more contrast. Naturally, the Mak-Newtonian is an excellent visual performer, as well as for imaging. Sign up for regular updates. Join our Astronotes Newsletter. I love Algonquin Park, I'''ve been going there since I was a kid.

190mn focal length

The lunar shot was taken with my Nikon and that Celestron comet catcher I picked up This is actually a snapshot from actual footage I took of the planet Neptune. The image has been brightened so everyone is able to see it better as we all know how far Neptune is from the Sun and how dim it is!

Date: 3 August Multiple frames for each image, stacked in RegiStar. You can get better earnings and redeeming rates at higher tier levels. Learn more about our program. Close Menu Blog Contributed Photos Submit a Photo. Product Info. Privacy Policy Terms of service.

Focal Length and Field of View

New to Astronomy? Learn here. Kenny Zuppardi — Neptune This is actually a snapshot from actual footage I took of the planet Neptune. Submit a Photo See all Photos. Ways you can earn Product Purchase Refer a friend Share on social media Learn more about our program. Register Login.


thoughts to “190mn focal length

Leave a comment

Your email address will not be published. Required fields are marked *