Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2")

Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2")

# 2454826

€ 259.00 Price excl. German VAT tax (19%): € 217.65

Out of Stock  


  • Hyperion Universal Zoom Mark IV: fourth generation of Baader-Zoom, 68° Widefield eyepiece with five magnifications - focal lenghts 8, 12, 16, 20 and 24mm clearly defined with "smoothed-out" improved Clickstop Action (a must for effortless binoviewing)
  • Long eye relief, perfectly matched to the human eye. Flatfield design – sharp right to the edge of field
  • High Quality Phantom Coating Group Multicoatings! For faintest objects, maximum contrast and total freedom from reflections
  • Large adjustable rubber eyecup, smaller straight rubber eyecup and winged, foldable eyecup included, to fit over M43 photo/video-thread
  • M43-Video-Photo thread for afocal and classical projection photography, permits optional adaptation of practically any camera with optional accessories
  • Includes 2" and 1¼" barrel, usable for all 1¼" binoculars with detachable eye-rest and spotting scope with 1 3/8" thread (Celestron / Sky-Watcher and others)
    • Includes all features of the popular Hyperion Zoom Mark III, as well as
    • low weight (290g/10,2oz), slim design of 55mm diameter (perfect for binoviewing)
    • Zero-Tilt safety kerfs instead of the hated undercuts in the barrels
    • Includes 2" SC-thread for shortest possible adaptation to telescopes or prisms/mirrors
    • 4mm backfocus-gain with spotting scope A-Ring (included): the Mark IV focuses with all tested spotting scopes (optional adapters available for most major brands)
    • Sufficient distance to clamping screws with telescope adapter B-Ring (included)
    • Eyepiece holster with belt strap – hold also firmly on tripod legs
  • Please also note the detailed product description as well as the PDF Hyperion Universal Zoom Mark IV instruction manual

Product Questions

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I'd like to use the mpcc mk3 with this eyepiece. Where is the field stop located?
Question by: Tim M on Dec 4, 2017 7:27:00 AM | 1 Answer(s)
Is this eyepiece parafocal as you move between click stops?
Question by: Tony on Sep 30, 2018 4:18:00 PM | 1 Answer(s)
Can you recommend a reducer to use with Mk IV zoom? I want to reduce the magnification min/max range ... THX
Question by: Michael on Jan 26, 2017 3:39:00 PM | 1 Answer(s)
On my Newtonian: If I'm using a MPCC w/this zoom and alternating between visual and T2 w/Nikon APS-C, is there some sort of extension I could use (clicklock preferred), so that I don't have to add/remove the focuser ring extension each time? To make matters even more fun, this will be used on a Bresser Hexafoc... Is this doable?
Question by: Newbie on Jan 21, 2018 6:58:20 PM | 1 Answer(s)
Is any adapter available that allows this eyepiece to be used on the Kowa TSN-883 spotting scope?
Question by: Henry Link on Jan 31, 2017 5:42:00 PM | 1 Answer(s)
With eyepiece projection, the image at the edge is extremely blurred. What could be the reason for this?
Question by: Anonymous on Sep 2, 2019 11:46:00 AM | 1 Answer(s)
Is the optics of this zoom eyepiece improved or modified if compared to the previous version? If yes, how?
Question by: Jack on Feb 2, 2017 7:55:00 AM | 1 Answer(s)
I have a Nikon D7100. Which adapter do I need to connect the Hyperion Universal Zoom Mark IV, 8-24mm eyepiece to the camera directly (I already have a T-Ring adapter for Nikon). I purchased the Hyperion M43 and DT-Ring DP54 as suggested in the picture with no luck
Question by: Walter G. da Cruz on Jan 10, 2020 7:43:00 PM | 1 Answer(s)
Can it work with Canon Eos M cameras?
Question by: Aitor Zabala on May 25, 2019 1:47:00 PM | 1 Answer(s)
How do I get the new universal zoom Mark IV 8-24mm eye piece to focus at infinity on the Celestron Regal M2 100ED?
Question by: Paul Hathaway on Aug 2, 2017 10:07:37 AM | 1 Answer(s)
I want to atach Hyperion mark iv zoom with 2,25 zoom to my Sony a5000 mirrorless E-Mount, please advise me regarding the built (adaptors, t rings, spacers ) in order to obtain best results combined with skywatcher 127mak.
Question by: Victor C on May 16, 2021 1:03:00 PM | 1 Answer(s)
I want to do projection photography with the Zoom Mark IV using a Canon EOS R with and without the Hyperion-Barlow 2.25x using the 2" barrel with my telescope.

I believe I can do this by using a Wide-T-Ring Canon R (2408336), a UFC S52 Camera-Adapter (2459119), a UFC Base (2459110), a UFC S70 / T-2 Adapter (2459130), a Baader TQC/TCR Heavy duty T-2 Quick Changing System (2459130) and a M43 / T-2 Adapter (2958080).

What I am not sure of is exactly what UFC S70 and/or T-2 extensions I would need to get the recommended back focus for use with the full frame EOS R camera. I am also not sure if I could fit the #2459130 in the setup, it would be convenient but by no means necessary. I am also not sure if I would require different extensions when using the Barlow.

Can you please confirm if these parts will work as I intend (with or without the #2459130), what extensions I should use to get the recommended back focus with the EOS R camera and if I need different extensions when using the Barlow?
Question by: Bryan F on Jul 9, 2020 4:01:00 AM | 1 Answer(s)
I have the Hyperion Universal Zoom Mark IV and wondered if you have an adapter to connect it to a Canon Powershot G9 camera so that I can take afocal photos. Thank you.
Question by: Stuart on Mar 16, 2020 11:10:00 PM | 1 Answer(s)
I have a 750 mm F/5 Newtonian, and I have bee told this eyepiece will not work with such a "fast" telescope as the edges of the image will be very blurred. Is this true?
Question by: Jordi on May 19, 2021 3:07:00 PM | 1 Answer(s)
Will this eyepiece fit on a Celestron Ultima 100 ( ?

Thanks for your help!
Question by: Vegard on Jan 7, 2022 3:39:00 PM | 1 Answer(s)
I want to connect the Hyperion 8-24mm Mark IV zoom to my Nikon D5600. I don't see a specific Nikon T-ring converter. What do I need to connect the eyepiece to my camera? Thank you.
Question by: Mark Kaufman on Feb 8, 2020 7:10:00 PM | 1 Answer(s)
Somewhere I read that the Mark IV zoom was made water and dust resistant (waterproof?). Is this correct? This is more important for spotting scope user probably than astro users but would be a great feature. I suspect the zoom mechanism would be hard to seal though.
Question by: Spike S. on May 5, 2017 4:44:00 PM | 1 Answer(s)
I have a Sony A7RIII 35mm Full frame mirrorless digital camera. Please advise the adapters I would need to connect my Mark IV universal zoom to this camera.
Question by: Jaidev on Aug 19, 2021 3:05:00 PM | 1 Answer(s)
Is any adapter available that allows this eyepiece to be used on the Opticron MM4 60ED spotting scope?
Question by: simon on Nov 10, 2018 3:52:00 PM | 1 Answer(s)
How do the folding rubber eyecup and the eyecup with foldable winged shield fit onto the M-43 thread??? The only eyecup that fits is the standard eyecup. The other eyecups are too small and just sit loose inside the M-43 thread. Am I supposed to remove the M-43 thread for the other eyecups to fit. I need the smaller eyecups for a binoviewer? Thanks
Question by: Terry Habig on Oct 10, 2021 1:04:00 AM | 1 Answer(s)
Could someone here please tell me what do I need to buy to be able to connect my Canon EOS M6 Mark II to the Baader Hyperion Universal Zoom Mark IV, 8-24mm, which is connected to my Celestron nextstar 8se?

I already have the Vivitar T-Mount to Canon EF-M Mount Adapter per bhphotovideo advice and it doesn’t work.

Thank you so much!
Question by: Ciprian on Jul 27, 2020 3:43:00 AM | 1 Answer(s)
Will the new Mark IV work with a Pentax 65mm spotter and if so are any additional adapters required?
Question by: Jason Rex on Jun 6, 2017 2:41:41 PM | 2 Answer(s)
I have just received this item. I can’t identify how to find the M43 photo thread. The manual says “when you remove the extendable eyecup..” But how do you remove the eyepiece?
Question by: Brian Sugden on May 21, 2021 6:59:00 PM | 1 Answer(s)
I recently purchased both the Hyperion Mark IV zoom and Hyperion 2.25 barlow and have a question regarding set-up.

While the box for the zoom suggests that the barlow is attached directly to the eyepiece (see caption "thread for Hyperion Barlow" and arrow pointing directly at the eyepiece), the manual ( indicates at p. 11 that "the barlow is attached onto the 1¼" nosepiece" (i.e. nosepiece between eyepiece and barlow).

Could you please advise as to the correct set-up? Does it matter one way or the other (my preference would be not using the eyepiece but I am happy to do so if this will improve performance)?

Many thanks in advance for responding at your very earliest convenience. Your kind assistance is much appreciated.

Question by: David Tortell on Apr 12, 2019 2:35:00 PM | 1 Answer(s)
How waterproof or weatherproof is this zoom eyepiece please?
Question by: Adrian on Jan 20, 2022 7:42:00 AM | 1 Answer(s)
I have a Meade Instruments 07363 No.64 SLR Camera T-Adapter connected to the visual back port of my meade ETX 90mm telescope. I would like to connect my Hyperion Mark IV zoom directly to the male threaded T adapter end of this Meade adapter. Is there an adapter ring that fits into the telescope end of the Hyperion lens (similar to how the "A" and "B" adapter rings work) that will allow it to screw directly onto the T thread of this Meade #64?
Question by: Robert Harney on Jun 19, 2020 8:48:00 PM | 1 Answer(s)
Can I use this eyepiece with my newtonian telescope? When I put this eyepiece on the scope it is totally blurry. Seems that the eyepiece needs to be about 20" approx. away from the focuser to get a focused image.

Question by: bud mohrman on Mar 31, 2022 10:51:00 PM | 1 Answer(s)
If the zoom is modified to fit a Celestron Regal M2 spotting scope, can I then use it with a Celestron Barlow x2?
Question by: Lars Bak on Jan 13, 2019 12:34:00 AM | 1 Answer(s)
I have a Celestron Nexstar 8se and just bought the Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece (1¼" / 2") with the 2.25x barlow. I also have a panasonic P&S ZS-100 camera, what adapter can I buy? Many thanks!
Question by: Ciprian Herta on Dec 20, 2019 4:58:00 PM | 1 Answer(s)
Having trouble to connect the zoom Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece to a Stellarvue 45-Degree Correct Image Erecting Prism - 2" -D1035. Do I need a adaptor ?
Thank you
Question by: JACQUES MERRAN on Jan 27, 2021 3:35:00 AM | 1 Answer(s)
1) I was told that the 1.25 nose piece does come off but when I looked at one in the store it looks like there are small set screws in the side. I tried to twist off the 1.25 and it would not budget. Does it come off?
2) the vendor said the 2" is only for ease of use. You get no advantage of using the 2" re more light gathering. Is this true?
3) If #2 is true then you do not buy 2" filters with this eye piece
4) you do not get the normal "space walk" feel of the 2" with this eye piece if #1 is true so you might as well buy a 1.25 zoom or a 2" dedicated zoom if you want that 2" feel?
Question by: Chris Weadick on Oct 25, 2018 3:13:00 AM | 1 Answer(s)
I have a Celestron Regal 100 ED spotting scope. If I upgrade the supplied zoom eyepiece to the Hyperion can I expect any improvement in the clarity of the image. I find the focus a little 'soft' above 50x.
Question by: Ross H on Nov 30, 2020 6:23:00 PM | 1 Answer(s)
I have a 2" (adaptable to 1 1/4") TeleVue 2x Powermate. Will this zoom EP work with my powermate? I will be using this combo on my XT8i.
Question by: Tony on Jan 23, 2019 5:45:00 AM | 1 Answer(s)
does the Hyperion Mark IV zoom fit an Opticron HR66 spotting scope?
Question by: Mark Baader on Apr 24, 2021 10:45:00 AM | 1 Answer(s)
Can I use c mount camera to Baader Hyperion Universal Zoom Mark IV. Which adapter I shall select to connect the mark IV to c mount thread camera.
Question by: Binu on Apr 20, 2019 9:23:00 PM | 1 Answer(s)
what is the ideal chip to eyepiece distance when using the eyepiece fore eyepiece projection? How large would the well corrected field be?
Question by: Wouter D'hoye on Jan 24, 2018 8:41:09 PM | 1 Answer(s)
I have the Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece and would like to attach my Canon 5dMk3 for moon photography.
Question by: Darryl on Jan 23, 2019 12:40:00 PM | 1 Answer(s)
i have this eyepiece and a ZWO camera. Is there some adapter i need to connect the two?
Question by: Brandon McFarland on Jun 24, 2020 4:10:00 PM | 1 Answer(s)
I was told that the outside diameter at the turning ring of the Baader Hyperion 8-24mm Mark IV Zoom Eyepiece (1.25"/2") is 55.07mm. I was trying to make sure that this eyepiece would fit inside the Orion Variable Universal Camera Adapter for eyepiece-projection photography on my refractor telescope:

Unfortunately, it would not as the inside diameter of the adapter is 38.3mm,

Do you have a similar product that I can use with this eyepiece for eyepiece-projection photography on my Orion ED80 refractor telescope...???

Thanks in advance.
Question by: driven13 on Jun 19, 2020 4:51:00 AM | 1 Answer(s)
Since I have recently bought a 2" telescope, I am looking to add 2" (not 1.25" eyepieces) eyepieces.
In appearance, the baader hyperion selection look like 2" with a 1.25" projection added on.
My question: Are these eyepieces, basically 1.25" made usuable in 2" telescopes? Or 2" eyepieces with a 1.25 projection added on?
Question by: David Douglas on Jun 24, 2020 2:36:00 AM | 1 Answer(s)
I looked through the Q&As and found that back in 2017 someone asked if this eyepiece would work with the Pentax 65PF ED spotting scope. The company rep answer was it should since it was the standard 1.25”. However a user posted that it would not focus at infinity on several settings. Is that correct or will it work with the Pentax PF 65 ED ii? Thanks.
Question by: Mike on Aug 23, 2020 7:37:00 AM | 1 Answer(s)
I have a Mark IV zoom EP. With both the 1-1/4" and 2" nose pieces removed (& A/B removed), can you please tell me what the thread diameter size/spec is at the tip/end of the lens container? I can find no reference as to what this thread can connect to. Please help. Thanks... John
Question by: John Santucci on Dec 18, 2018 5:54:00 PM | 1 Answer(s)
I have a Hyperion Universal Zoom Mark IV. Can I get an adapter for my Optolyth APO TBG 100 HDF ?
Question by: Stewart on May 9, 2018 9:46:00 PM | 1 Answer(s)
The previous version has the M35/M45 Adapter ring to enable mount on Celestron/Zeiss spectives. May I use the same part to mount Mark IV on my old Celestron Ultima spective or the current 1 3/8" Spoting scope thread ring? Or do you have any other way how to mount Mark IV on Celestron Ultima/Acuter Natureclose scope?
Thank you, Vit
Question by: Vit H. on Aug 3, 2018 4:24:00 PM | 1 Answer(s)
I have a Canon EOS 1000D digital camera. Please advise the adapters I would need to connect my Mark IV universal zoom to this camera.
Question by: Graham Hunt on Jun 3, 2018 6:51:00 AM | 1 Answer(s)


Hyperion Zoom 2 Zoll und 1.25 Zoll
Hyperion Zoom 2 Zoll und 1.25 Zoll
Continous magnification with ClickStop at 8/12/16/20/24 mm

The Hyperion Universal Zoom Eyepiece can be adjusted steplessly from 8 to 24 mm of focal length. In addition focal lengths 8 / 12 / 16 / 20 / 24 mm are marked with „ClickStops“, so that any of these five magnifications can be set intuitively. This is especially of importance for use with binoviewers.

Two Mark IV eyepieces can be set most easily to the same magnification, even in the dark. The click-sound has been smoothened, so that hunters or birders will not disturb  their targets when zooming in on them.

Hyperion Mark IV Universal Zoom 8-24mm Eyepiece

with 1¼" / 2" nosepieces and ClickStop-Action

Zoom-lenses in general are not really famous for high quality optics. Also many zoom-eyepieces do not deliver the best possible image quality at high magnification because they were designed with focus on the price-tag so that image sharpness and field size is getting worse with increased magnification.

The recognition that the Hyperion Zoom Eyepiece enjoys is based on the fact that it was designed the other way around: the glass selection and most of all the principal optical design and consequently the lens polish quality – all were optimized for the highest magnification. And obviously, when closing in on an object you will want the field of view to increase and not to have it become seemingly smaller. Hence the Hyperion-Zoom shows the largest apparent field of view at highest magnification.

For many birders, observers of nature and astronomers alike, the Hyperion Zoom Eyepiece is their favorite eyepiece, it is also the only zoom-eyepiece that was designed from ground up to be used with bino-viewers.

Either 1¼" or 2" can be adapter (not simultaniously) to the Hyperion Universal Zoom Mark IV

What's new in the model "Universal Zoom Mark IV"?

Even Bestsellers can be improved: The fourth generation of this eyepiece weighs 290 gram and is lighter by 80 grams than its predecessor - it now has 55 mm diameter to become useful in dual mode from 55 mm interpupillary distance, both features make it especially desirable for use with bino-viewers. The adjustable eyecup can be removed to expose the M43 video/photo thread and create the maximum "nose space" for using it on binocular viewers with the supplied winged rubber eyecups - for maximum concentration on the target. The click-stop action has been smoothed out to more easily access the magnification stops at 8/12/16/20 and 24mm (click-stops are mandatory to easily and precisely set both eyepieces to the same focal length for effortless binocular observation without eye-strain). The zooming-mechanism as well as the inner zooming rails for all lens groups have been modified to improve cold temperature operation and the parfocalty for each focal length has been finetuned.

Most important however – the Mark IV offers almost 4 mm more backfocus. This is most beneficial for application with a multitude of spotting scopes. Two different Adapters for telescope and spotting scope adaptation are included with the eyepiece (Spotting-Scope Adapter „A“ and Telescope-Adapter „B“). Read more at "Telescope-sided Connections").

The Mark IV comes with both the 2" and 1¼" nosepieces mounted, each nosepiece having it´s own dust cap and both nosepieces are threaded to accept either 1¼" or 2" eyepiece filters. Both nosepieces are free of the hated undercuts. Instead our proprietary Zero-Tilt Safety-Kerfs provide an added measure of security by reducing the tendency of an eyepiece to slip from an unlocked eyepiece clamp. An additional little feature is the Baader-yellow soft pouch with integrated belt strap – which fastens onto many tripod legs just as well, to serve as a bin for all dustcaps that may go astray otherwise.

As usual with Baader eyepieces, the Mark IV offers an M43 photo/video thread on top of the eyepiece, to allow attachment of any desired DSLR or T-2 accessory for mounting a video-camera by means of the optional M43/T-2 adapter ring  #2958080. Unchanged is the optical quality, 68° field of view at highest magnification, Phantom Group multicoatings, a large adjustable eyecup or alternatively two M43 rubber eyecups for bino viewing. An optional spacer ring M43/M43 (#2954250) with 7,5 mm extension enables the user to increase the height of these eyecups in case of need.

The Mark IV likewise accepts adaptation of the 2.25x Hyperion-Barlow onto the 1¼" nosepiece, to transform into a high power zoom, featuring the magnification range of 3.6 to 10.7 mm. The Hyperion Universal Zoom Mark IV is available individually (#2454826) or as set together with the 2.25x Hyperion Barlow (#2454827)

Please also note our detailed Hyperion Universal Zoom Mark IV Instruction manual (also under the tab "Downloads") for further information.

Teleskopseitige Anschlüsse
Telescpope-sided connections
Anwendungsbeispiel mit 2
Application example of 2" changer ring
Teleskopseitige Anschlüsse
Application example of Spotting Scope Adapter "A"
Teleskopseitige Anschlüsse
Application example of Telescope-Adapter "B"

Connection Options and Included Items

Telescope-sided Connections

The Hyperion zoom Mark III comes with two removable barrels (1¼ "and 2"), as well as an 2" SC-thread for direct connection on telescopes or mirrors/prisms with the optional 2"/2" changer ring (#1508080).

Furthermore included in the scope of supply are two adapters of different height - both with 1 3/8" inner threads - for following uses:

  • Spotting Scope-Adapter A: 4mm gain on backfocus. the Mark IV focuses with all tested spotting scopes (optional adapters available for most major brands)
    Many spotting scopes nowadays do allow the mechanical insertion of astronomical 1¼" eyepieces – but in many cases this combo cannot focus to infinity. By utilizing the supplied spotting-scope adapter ring "A", the Hyperion Universal Zoom reaches almost four mm deeper into the eyepiece clamp of all those spotters, to safely reach infinity focus. When removing the 1¼" nosepiece, a 1 3/8" thread inside the "A"-ring will make the Mark IV firmly thread onto all Celestron-Ultima spotters and it´s namesakes. Optional available is a bayonet-adapter for Zeiss Diascope-spotters (#2454500). Threaded adapters for many other famous spotting scope brands (that still don´t allow 1¼" eyepiece adaptation) will become available in the future – now that it makes sense to produce them
  • Telescope-Adapter B: Sufficient distance to clamping screws..
    When using the Mark IV on a telescope though, the "B"-ring (supplied) should be chosen instead, to keep the bottom of the eyepiece flush with the upper end of most star diagonals. Otherwise the bottom 2" SC-threaded holding ring that holds the "A" or "B" ring in place may directly rest on the clamping screws of the star diagonal. The supplied 2" SC-ring also allows the Mark IV to firmly mount the eyepiece onto any SC-thread, especially onto our 2" clicklock star diagonal, with the help of the 2"/2" adapter (#1508020).

Please see the instruction manual for more information on changing both Adapters.


Kameraseitige Anschlüsse
Camera-sided M43 thread

Camera-sided Connections

As usual with Baader eyepieces, the Mark IV offers an M43 photo/video thread on top of the eyepiece to directly attach most video cameras. It also allows attachment of any desired DSLR or T-2 accessory by means of the optional Baader Hyperion T-Adapter M43i / T-2a  #2958080. An optional spacer ring M43/M43 (#2954250) with 7,5 mm extension enables the user to increase the height of the included eyecups in case of need or to attach M43 cameras without touching the lenses.

A further connection capability offers the SP54-system thread-in the form of the Hyperion DT ring system. For this system, the transition ring M43/SP54 #2958086 is suitable for the Mark IV zoom eyepiece. This adapter enables the connection of all common camera lenses on the Hyperion zoom to use it for Eyepiece Projection. Those connection rings are called "Hyperion DT rings", see our section "Eyepiece accessories" .

Read more on camera connections, required distances and adapters in our detailed instruction manual

Hyperion Zoom Augenauflagen / Augenmuscheln
Hyperion Zoom included eyecups

Included eyecups

Three different eye cups are included in the basic equipment of the eyepiece.

  1. Initially mounted is the large height-adjustable eyecup that also fastens onto the M43 photo-thread of the eyepiece. By rotating it counterclockwise the height will increase. This eyecup easily unthreads simply by rotating it upward further than the uppermost stop - this reveals the M43-thread connection
  2. A none-folding rubber eyecup alternatively fits straight onto the M43-thread. This is the preferred solution for observers without glasses at a binoviewer. It gives you enough room for your nose and good support to keep the perfect eye distance.
  3. An even lower eyecup with foldable winged eye shield especially serves for wearers of eye glasses, the flappable side shields block stray light and side image information not part of the eyepiece field of view. This helps to concentrate on the target when using a binoviewer.

Application Example

Comparison: Original Zeiss photo adapter and Baader Hyperion Universal Zoom Mark IV eyepiece as photographic projection

  1. Zeiss Diascope photo adapter produces one fixed magnification
  2. Zeiss Diascope with Baader Hyperion Mark IV Universal Zoom eyepiece and T-2 quick change system (T2# 6/7) gives five magnification with increasing field of view
Vergleich Festbrennweite und Hyperion Mark IV Zoom

Additional Information

Manufacturer Baader Planetarium
SKU (#) 2454826
Net weight (kg) 0.38
Eyepiece Series Hyperion
Focal Length 8 - 24 mm
Apparent Field of View 48° - 68°
AR-Coating Phantom Coating® Group
Parfocal Eyepieces Yes
Barrel Size (in) 1¼", 2"
Optical Design Modular
Speciality Eyepiece projection: afocal, Eyepiece projection: classical
Eyepiece Design
Number of Lens Elements 7
Number of Groups 4
Slip Protect Safety Safety Kerfs
Eyepiece Body above Reference Plane (mm) 81 mm
Length of 1¼" barrel (mm) 24,5 mm
Length of 2" barrel (mm) 27 mm
Outer Diameter 55 mm
Outer Connection (eyepiece/-camera-sided) Thread, M43
Inner Connection (lens sided) Thread, 1 3/8", 2" (50,8mm)
Outer Connection (lens sided) Barrel, 1¼", 2" (50,8mm)
Camera Thread M43
Threaded for filters Yes
Included Items
Dustcaps 1¼" dustcap (31,8mm), 2" dustcap (45mm), 2" dustcap (46.5mm - fits over eyecup)
Eyecups large height adjustable eyecup (M43), small eyecup (M43), winged eyecup (M43)

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oninoyakamo 170/06/2021 20/06/202113:17
  • Rating:
Splurged on a quality zoom rather than skimping on many fixed focal length eyepieces
I live in an apartment in a light-polluted area. Astronomy for me means balancing the portability of my telescope setup against the quality of image provided, while minding my budget.

The Hyperion Zoom had great reviews and wider Fields of View than cheaper models drew my attention. The 1.25" or 2" nosepieces allow for homogenizing barrel diameter with other eyepieces of either size, should my requirements require the purchasing of higher or lower power EPs outside of the Zoom''s range.

I took the plunge and am pleased with the results. The Hyperion Zoom has proved to be the indispensable mainstay I'd hoped it would be!
  • This zoom helps me optimize the portability of my telescope setup with a minimum sacrifice in quality
  • The modularity of the Hyperion Zoom means you have to pay attention to the particular section you are twisting lest the eyepiece come apart in some unintended fashion
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chobers 353/12/2020 19/12/202013:45
  • Rating:
A Versatile Accessory
I recently got back into astronomy after having enjoyed it as a kid, and bought myself an inexpensive reflector. I chose this zoom unit because it seemed to be a Swiss Army Knife of capabilities.

So far I have only tested a few stars and the moon. The main thing I noticed is, as I zoomed-in and refocused an object, it would be just as crisp and clear as before but only bigger.

This unit is much better than the telescope I bought, so I will be using it when I trade-up to a better scope.

The fit-and-finish is excellent and the threads are precise. The included case is very handy and keeps the unit safe.

My next purchase will be the Barlow which goes with this zoom unit. I won't have to buy many more eyepieces because I'll be well-covered, at least for now.
  • high-quality, versatile
  • It's a tight fit when installing into a 1.25mm eyepiece socket; I really have to push to get it seated. Everything is brand-new, however.
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Grieser Ludwig 01/01/2019 02/01/201911:42
  • Rating:
Baader Planetarium Zoom 8 - 24 mm
Habe das Zoom für mein Celestron Nexstar 127 Maksutov gekauft!
Lieferung und Verpackung war wie erwartet tadellos. Von der Qualität bin ich schlichtweg begeistert, die Optik selbst, die Haptik, der Bedienerfreundlichkeit (auch im Dunklen) und das Ganze zu einem sensationellen Preis. Fünf Brennweiten in dieser Qualität für ca. 220 Euro. Wenn man bedenkt was heute "günstige" Okulare kosten, dann ist dieses ein wahres Schnäppchen.
Begeistert war ich auch vom Service: Ich (Brillträger) hattte anfänglich Probleme und habe daraufhin den technischen Service kontaktiert. Alle Mitarbeiter waren überaus hilfreich und zuvorkommend. Das Okular und mein Prisma wurden kurzfristig und kostenfrei überprüft - eine Kundenfreundlichkeit, die man heute selten findet.
Also fünf Sterne, absolute Kaufempfehlung und ein herzliches Dankeschön!

  • Die perfekte Fertigung und Bedienerfreundlichkeit (auch im Dunklen)
  • Da fällt mir leider nichts ein!
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Logiker 361/12/2018 28/12/201815:31
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Bilder zu Kowa Adaption alt/600/660/82SV
Der Hyperion WWZoom passt an meine Kowa Spektive wie folgt:
An das aktuelle TSN 82 SV direkt über das 2 Zoll Gewinde, hängt vielleicht damit
zusammen das dieses Spektiv aus der alten 820 er Reihe adaptiert wurde und daher
noch das entsprechende Aussengewwinde behalten hat.
Das TS 601 benötigt den 41,5 mm Adapter zum aufschrauben, um den 2 Zoll Aussenring aufzunehmen.
Anbei entsprechende Photos der beiden Spektive. Auf dem aktuellen 82 SV ist das empfehlenswerte 30er Original Weitwinkel per Bajonett befestigt.
Beide Spektive werden durch den Baader Zoom erheblich aufgewertet. Die höchste Vergrößerung macht aber nur bei guten Lichtverhältnissen Sinn.
Wenn das alte 601 420 mm Brennweite und das 82 SV 450 mm Brennweiter haben soll,
können die Zoomvergrößerungen ungefähr errechnet werden (etwas unter 20 bis fast 60).
  • Zeitgemäßer Weitwinkeleinblich in allen Zoomstufen
  • Zoomen und Phonescoping klappt nicht so gut, das Okular dreht mit. Man kann sich aber darauf einstellen.
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Logiker 356/12/2018 23/12/201811:10
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Zoom passt ohne Adapter über 2 Zoll Gewinde auf Kowa TSN 82 SV Spektiv
Bin über die guten Bewertungen und diverse Hinweise auf den neuen 41,5 mm Kowa-Gewindering dazu gekommen, den Hyperion Weitwinkelzoom zu beschaffen. Da der Kowa-Adapter später geliefert wird, habe ich erstmal probiert, wie und ob die Zoom-Linsen in das Spektiv passen.Wichtig, wie beschrieben, die innere Schutzhülse abziehen!
Dabei habe ich gemerkt, dass der 2 Zoll Gewindering auf das aussenliegende Kowa-Gewinde passt. Sofort im Freiland ausprobiert. Bin über den Weitwinkeleinblick in allen Zoomstufen begeistert. Kein Vergleich mit dem alten Kowa Zoom für TS 601.
Ich werde den 41,5 mm Adapter bei Lieferung natürlich am vorhandenen TS 601 ausprobieren. Auch dieses Spektiv wird sicherlich aufgewertet.
  • Absolut zeitgemäßer Weitwinkelzoom für Spektive zur Naturbeobachtung
  • Fehlanzeige
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Geoff 66/03/2018 08/03/201801:26
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Hyperion Mark 4 Zoom and Barlow combo
The nose piece for the zoom lens arrived brand new and is cross-threaded and will not thread any of my filters. Here is Baader's response to my complaint.."Answer: We had indeed problems with a small part of the latest delivery of 1.25" nosepieces, where some of them exceeded the tolerances. We are currently waiting for replacements.
It may take some time until we receive the replacements, as they have to be made newly.
Please contact your dealer about a replacement (he handles the warranty issues); if you bought it at us, please drop us an email with a copy of the invoice as proof of warranty.
Please excuse the inconveniences, we hope that we can provide you soon with a replacement."
Really..!..Am I unreasonable in thinking this is simply just NOT GOOD ENOUGH ...why not take one off one that isn't faulty and just send it to me..?..
What kind of customer care strategy is this...this is a completely inadequate solution for one of your faulty products. How come my question regarding this was removed from the questions list.?.
  • That i am holding it in my hands....
  • I can't use it because the 1"1/4 nose piece thread will not properly engage in the zoom lens.
We are sorry to hear that you are not satisfied with this product. Please contact us by email and let us know your address. We will send you a replacement of the 1.25" nosepiece.
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wizDUMB 337/12/2018 04/12/201816:22
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Baader zoom, a chance for affordable image quality
Baader made a adapter ring to fit to a 41.5mm thread, this allowed me to fit the baader hyperion mk4 zoom to my Bausch and Lomb HDR60 scope, I did have a HDF zoom eyepiece on it but the baader hyperion gave much more comfortable view as it is wider, it was like it transformed the scope into a 65mm one after using the other eyepieces...Also using the 41.5mm adapter I fit the baader zoom to my kowa TSN-2 which made a very good scope into a excellent one with very good image from min to maz zoom.
  • Baader zoom gives a chance of affordable image quality usually only found by having much more expensive equipment.
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William Paolini 43/02/2018 13/02/201823:58
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Hyperion Mark IV Zoom
An outstanding astronomical accessory. For many observing sessions all you would need is this one eyepiece and a Barlow to get to higher magnifications. Tested it against my Pentax XW eyepieces and it performed just as well showing very high contrast, bright, and crisp views. In my 254mm f/4.7 Dobsonian with coma corrector, star points remained tight even at the field stop. Observing a selection of galaxies and nebula the Mark IV Zoom showed these objects every bit as excellently as my Pentax XWs while giving me more flexibility since I was able to adjust the magnification instantly to find an exit pupil that rendered the object the brightest and best. I also now use the Hyperion Zoom exclusively in my P.S.T. solar telescope since it allows finding the optimum magnification to best render the solar details. It was especially valuable when observing the Moon allowing you to instantly go from whole Moon views to close ups on areas of interest. In a binoviewer I have never had such an enjoyable time lunar observing in my 50 years in the hobby! Eye relief is very comfortable and its mechanical operation was smooth and precise. An outstanding product and highly recommended.
  • Excellent optics, Quality build and smooth operation, Flexibility.
  • Common to almost all zooms, the AFOV changes as you zoom.
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AstroBob 160/06/2017 10/06/201709:32
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Very good eyepiece with minor cons
Use this eyepiece on a variety of telescopes including 85mm and 152mm high end APO refractors, 8" , 11" and 14" HD SCTs and a 22" DOB. Overall a very good eyepiece. Only two minor cons:
1. Needs a bit more in focus than most of my other eyepieces from a variety of manufacturers. It works on all my telescope with the exception of one Ha solar setup so need to use a different configuration on that scope.
2 Took a while to figure out how to remove the eyepiece hood so I can attach the 43mm/Tmount adapter. Didn't see that covered in the instructions....(you twist the entire eyepiece assembly to unscrew".
3 The Tmount adapter uses a 43mm thread which is not the "industry standard" so although I have a bunch of those adapters for all my other gear, I had to buy the proprietary adapter for this this eyepiece.

Overall though it is a very good eyepiece with contrast and resolution that match my best fixed focal length eyepieces. Frankly the 2" and 1 1/4" feature is of questionable use on an astronomy telescope since the only need for the 2" barrel is with a ultra wide FOV eyepiece on the longer focal length sizes and this one is 24mm so not needed. Guess it does allow fitting to some other spotting scopes.

NOTE that a previous question asked whether this would work with a Pentax ED spotting scope and the factory answer was they thought it should. I have that same scope and it won't come to infinity focus over the entire zoom range.....not enough in-focus. This was too bad as that was something I hoped would work.....but other than that it has met all my expectations.
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charles baumann 220/08/2017 09/08/201723:02
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Learning about focal length

Well, i got this lens and i have to admit i thought i was getting 8x to 24 x but that being said i am now learning and reading a lot about focal length. Turns out it's the same Zoom factor as my original one but 100 times better. I can't be happier with my Ultima 100 from Celestron for bird watching. I still have now lots to understand about focal length and need to eliminate Zoom factor from my vocabulary :)

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