Baader Planetarium - Baader Mark V Binoviewer

Astro-Physics Mark V Binoviewer

Manufacturer : Astro-Physics
Part Number : BPMARKVS

The Mark V Binocular Viewer is the culmination of years of research and development, originally by Carl Zeiss Jena and further advanced by Baader Planetarium. It combines all the best features to provide a superb viewing experience - optical quality, high transmission coatings and diopter adjustment to individually focus each eye.

Features

ClickLock Eyepiece Clamps - The ClickLock mechanism grips your eyepiece firmly using a 3-point contact that accurately centers each eyepiece. Insert the eyepiece and lock it in place with a gentle twist of the outer locking ring (just two tenths of a full turn). The clamp applies gentle, even pressure to lock the eyepiece in place and centered. Please refer to additional information from Baader Planetarium regarding the new ClickLock feature.

Diopter Adjustment - You can now achieve perfect focus for each eye with the silky smooth microfocusing collar, which allows 8mm of focus travel. Please refer to additional information from Baader Planetarium regarding this new ClickLock feature.

Dielectric Coating of Prisms - The dielectric coating increases throughput by 8.9% from previous models. The coatings were carefully matched to the index of the glass used for the prisms. They allow maximum transmission at 510nm - exactly where the dark accommodated eye has its maximum sensitivity. This is especially important for night vision.

Mirror Diagonal - The Baader T2 Mirror Diagonal features durable, 99% reflective Maxbright dielectric coatings. Its compact size allows the shortest possible light path. It is also part of the T2 system, allowing a variety of configurations. The mirror diagonal offers the same optical performance as the prism diagonal that was offered prior to December 2011.

Interocular Separation Adjustment - Adjusting the eyepiece spacing does not affect focus. The interocular distance can be adjusted from 55mm to 75mm.

Removable 1.25x Compensating Optical Element - This optical element eliminates the slight color error and spherical aberration that a prism beam splitter naturally introduces into the light path of all binocular viewers. It allows you to enjoy wide-field, low-power views of deep-sky objects, as well as high powers. This element (also known as a Glasspath Compensator) was designed by Roland Christen of Astro-Physics and is essential for telescopes with fast focal ratios. Baader Planetarium was the first to introduce this feature for the binocular viewer. We also offer the 1.7x (BP4B) and the 2.6x (BP4C) Glasspath Compensators to provide higher magnifications. One of these optics should always be part of the optical path of telescopes with fast focal ratios unless a BARCON or BPFFC is used.

Specifications

Clear Aperture: 1.1" at the prism entrance w/o the compensator and 0.96" with the compensator.
Weight: 2.25 lbs with Mirror or Prism Diagonal and 2" Nosepiece

Includes

Mark V Binocular Viewer
1.25x Compensating Element (BP4A)
T2 Mirror Diagonal (BP1A)
2" Tapered Nosepiece (AP16T)

Current rating is 5.00. Total votes 4.

BPMARKVS

$1,785.00

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Product reviewsCustomer picturesProduct Features

Baader Mk-V binoviewer.

Optically a 10 for high power planetary study. Mechanically the unique individual eyepiece adjustments do take a bit of practice to get used to. Ive owned this model for 5 years and received one of the first directly from Mr Baader. I use the 1.7X and find the 0.8 mm exit pupil best for planetary contrast. Coupled with a pair of 10 mm SPLs and a 130 mm APQ telescope I enjoy breathtaking lunar/planetary views. These bino-viewers lose very little light compared to other models I have used.

From: | Created on: 10/16/2009 1:48:57 PM

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Baader Mark V Binoviewer

Exquisite optics, very little light loss compared to other binoviewers, or not using a binoviewer. The individual focus of each side takers a bit of skill and practice to use. I use mine with a 1.25X field lens and an APQ130 telescope. The planetary views are breathtaking even at 170 X which is roughly a 0.8 mm exit pupil for my telescope.

From: | Created on: 10/16/2009 1:48:57 PM

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Baader Mark V Binoviewer

From: | Created on: 10/16/2009 1:48:57 PM

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When you get it right its a stunner

Optically, this is the best binoviewer you can get..clear large aperture, light weight and optics appear to be very well coated. However, the diopter adjustment mechanism is very hard to get right. No instructions provided and you cant find a whole lot of useful advice on the web on fine adjustment other than complaints. My unit arrived with a slight paint wear spot near the ocular attachement area. Not a big deal- but hey these are expensive!! And, a case would have been nice.

I have to say, when I finally got everything adjusted correctly, the views were very astounding indeed. Saturn with the viewers and 9mmT6s, 1.25x compensator and the A-P 140mm was simply stunning. A hawk alighted near a tree and it was amazing through my Traveler, 1.25x and 18mm Radians.

From: | Created on: 10/16/2009 1:48:56 PM

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Clear Aperture: 1.1" at the prism entrance w/o the compensator and 0.96" with the compensator
Weight: 2 lbs 4 oz with prism diagonal and 2" nosepiece