What is the in focus requirement of the binoviewer
Question by: Brian Potter on Nov 10, 2016 5:02:00 PM | 1 Answer(s)
The optical length of the Baader Giant Binoviewer Mark V is 113mm. We suggest to use a 1.25x glass path corrector in order to get the color correction right. This will also enlarge the backfocus of your telescope and will be enough magnification for most applications.
Answer by: Baader Web Team (Admin) on Nov 11, 2016 9:26:00 AM
What are the recommended accessories for using Mark V with a Celestron 9.25?
Question by: Rafael Sampaio on Jun 16, 2020 4:08:00 AM | 1 Answer(s)
We have described several adaptations in the manual which you can find in the download section of the MaxBright Binonoviewers website. For an SC, you basically only need a nosepiece. We also recommend a Glasspath Corrector 1.25x, although it is not absolutely necessary - but at higher magnifications, it removes the colour aberrations which may be visible even at an f/10 telescope.
You can find sets with nosepiece and GPC here:
Please make sure that you have a sturdy eyepiece clamp. For a compact adaptation, we also recommend a TZ-2 star diagonal which can be attached directly to the binoviewer, but reaching focus is no problem with a Schmidt-Cassegrain.
Answer by: Baader Web Team (Admin) on Jun 16, 2020 10:41:00 AM
Good evening, I just bought a Mark V. The two rings left side solidarity, it is not possible to adjust the diopter on this side? Is this normal?
In addition, on the right side, there is a small opening about 15 ° at the bottom of the right eyepiece tube. A little external light penetrates into the right tube. Is that also normal?
Question by: Roudier Jean-François on Jul 20, 2017 4:55:10 PM | 1 Answer(s)
The locking rings move in opposite directions (one clockwise, one couterclockwise) - but both have a diopter adjustment and a clicklock, so you should be able to rotate both rings.
Iy fou are talking about the whole close to the bridge, which is closed when you move both parts of the binoviewer to the closest pupil distance: This is normal and necessary to adjust the interpupillar distance; but intruding light is no problem.
Answer by: Baader Web Team (Admin) on Jul 24, 2017 11:03:00 AM
How do you direct-connect a Mark IV zoom EP to the Mark V binoviewer (can you?)?
Question by: John on Dec 14, 2018 8:24:00 PM | 1 Answer(s)
The binoviewer has got "only" a clicklock eyepiece adapter, so you can't screw the eyepieces directly (and theft-proof) onto the binoviewer. The Clicklock can't be removed, because it also contains the mechanism for the diopter adjustment.
To attach the Hyperion Zoom, we recommend to use the adapter "A" for spotting scopes which is included with the eyepiece, because it saves you some more millimetres of backfocus.
Answer by: Baader Web Team (Admin) on Dec 17, 2018 8:29:00 AM
I like to buy a Mark V Großfeld (Giant)-Binocular. With the Bino I like to buy a Glasspathcorrector.
I am using a Takahashi 120 refractor (TSA-120) F/7.5. Would Glasspathcorrector Factor 2,6 be a good choice?
Also, I like to ask you for what Diagonal to chose for this Bino. I have the Baader 2" ClickLock Diagonal Mirror # 2956100, for a year and I am very, very pleased with it!!
Should I choose this diagonal # 2956100, or should I chose Baader 2" ClickLock Diagonal Mirror M68 thread (Zeiss) # 2956100Z for the Mark V Großfeld (Giant)-Binocular with Glasspathcorrector Factor 2,6 ?
Question by: Tomas Hultgren on Dec 29, 2018 12:06:00 AM | 1 Answer(s)
For the TSA 120 the glaspath corrector 1,7x would be suitable, but 2,6x works too. Its better to use the T-2 mirrors and not 2" mirrors with the Mark V binocular, the long way that the light travels through a 2" mirror may be too long to reach focus.
Answer by: Baader Web Team (Admin) on Jan 3, 2019 12:25:00 PM
What's the desired way to attach this binoviewer to the 2" (not T2) diagonal with ClickLock?
Question by: Jan on May 25, 2018 4:24:00 PM | 1 Answer(s)
Answer by: Baader Web Team (Admin) on May 25, 2018 4:47:00 PM
What is the total light transmission of this binoviewer?
Question by: Bruno Yporti on Jan 7, 2018 12:49:00 AM | 1 Answer(s)
Please excuse, there is no answer to this question. What do you mean by "total light transmission"? The incoming light is split into two channels - evidently the light in both channels appears to be notably dimmer when you close one eye at a time and try to judge the brightness in each channel separately. What does not come into play during such kind of "fake-evaluation" is "the power of the human brain".
It happens "in the brain" that both light trains become reunified. And what actually happens there is that the image all of a sudden does NOT look dimmer but that fine detail and most subtle color differences within planetary surfaces become recognizable much easier and that observation happens effortlessly without fatigue - even when observing over a long time. Regardless of light throughput - the real virtue of a binocular viewer does lie in the optical quality of the glass and utmost care in optical surface polish, in perfect angle orthogonality of each prism, an immaculate beam splitter quality, highest degree of optical adjustment of all optical elements at any interpupillary distance - and only lastly: utmost coating quality. These are the most necessary criteria (in this order) for supporting an undeteriorated viewing experience with both eyes - even at highest magnification work. So - whatever anyone else is claiming - the Mark V has the best light throughput and the highest quality prism surfaces and adjustment - and and and - of any commercial astro-binocular viewer in the market.
Answer by: Baader Web Team (Admin) on Jan 11, 2018 8:27:00 AM
A question about Mark V Großfeld,
When will this little wonder be available again?
Question by: Yann on Oct 12, 2021 3:22:00 PM | 1 Answer(s)
Currently many products are out of stock due to COVID delays in manufacturing and supply chains. Unfortunately, we cannot predict delivery times and have many customers, which we cannot inform individually when a product is available. Therefore we have developed two automatic tools which we would like to ask you to use.
If you enter your email address here, you will receive a monthly newsletter with a lot of information about our products and new releases
2nd "Notification Tool"
On the page of items that are currently not available, there is a field "Notify me when the product is available".
If you enter your email address there you will be informed as soon as the product is in stock.
Sorry and thank you for your understanding!
Answer by: Baader Web Team (Admin) on Oct 13, 2021 8:32:00 AM
I am considering a Mark V baader on a TV-85.
If Glasspath the aperture is 25 mm what is the point of having a Mark V with 30mm prisms ?
Thank you for your reply
Question by: Yann on Oct 20, 2021 1:01:00 PM | 1 Answer(s)
Sorry - you will need to see this for yourself. Vignetting is not a problem if you put the baffle into the right place. Vignetting must go above 40% until the human eye will see it at the edge of field.
Many eyepiece makers use this effect to "virtually sharpen" the stars at the edge of field - and this never got noticed.
Fact is - you may have a light cone of 26mm entering the bino, but what you actually see is the field created by the 30 mm prisms in the bino.
Please - check the Cloudy Nights forum for Binocular Viewers. You will find hundreds of threads covering this subject. And you will see that all people there regard our Mark V the best.
Answer by: Baader Web Team (Admin) on Oct 21, 2021 3:47:00 PM
Is a glasspath corrector necessary for use on an SCT to correct color? I plan to use a Mark V on a Celestron 14 and do not want to add more focal length and higher power than the C14 already has. Thankyou for the answer.
Question by: tbennett on Jan 4, 2020 3:26:00 AM | 1 Answer(s)
At f/10, the light path of the telescope is parallel enough that you can usually work without a glasspath corrector, although it may still be interesting to achieve further magnifications.
Answer by: Baader Web Team (Admin) on Jan 7, 2020 8:37:00 AM
Is it possible to replace the old 3 screws in the original Maxbright binoviewers with the clicklock system? How much?
Question by: Emilio on Dec 17, 2020 4:14:00 AM | 1 Answer(s)
You've written your question on the Mark V Binoviewer product page but in the text ask about the Maxbright Binoviewer.
- If you're question was correct but placement was wrong then our answer unfortunately is no. It is not possible to exchange to standard eyepiece clamps to ClickLock clamps on the Maxbright Binoviewer.
- If you're actually asking about the Mark V then the answer is yes, older models can be exchanged to ClickLocks. However this needs to be done by us in house and requires some time so it is not cheap. If you're interested, please send us an email
Answer by: Baader Web Team (Admin) on Dec 17, 2020 2:49:00 PM