2" MPCC Mark III (Multi-Purpose Coma Corrector for Newtons)

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2" MPCC Mark III (Multi-Purpose Coma Corrector for Newtons)

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€ 175.00 Price excl. German VAT tax (19%): € 147.06

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  • Coma corrector for Newton telescopes, that reduces neither the focal length nor the image field of your telescope
  • Large lenses for completely vignetting-free exposures up to f / 3.5. Maximum sharpness over the entire image field
  • Phantom Coating™ Group multicoated for maximum transmission and total freedom from reflections
  • Next to the photographic only version, there is also a visual version that contains all parts of the base elements as well as additional adapters for visual application:
    • 2458400A: Photographic Version with removable 2" Stoppring, usable either with T-2 (M42x0.75) or M48x0.75 connection
    • 2458403: Visual Version (V-1 Set) contains all parts of the photographic Version MPCC Mark III #2458400A as well as 1¼" to T-2 focusing eyepiece clamp (#2458125) and adjustable VariLock T-2 extension tube 20 – 29 mm (#2956929)

Please note: This set replaces the former set #2458402 for visual and photographic application of the MPCC Mark III. The old set consisted of a multitude of rings – but was not adjustable in optical length such as this V-1 set.

The idea for this new and much more versatile set was born after we received this detailed question regarding eyepiece adaptation on MPCC, where we recommended our VariLock and focusing eyepiece clamp as best accessories.

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€ 175.00 Price excl. German VAT tax (19%): € 147.06

Product Questions

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I want to connect my existing EOS T-ring to the Baader MPCC. Does the item on the webpage come with the necessary spacers, or will I have to buy additional items?

Question by: Peter W on May 6, 2017 6:25:15 PM | 1 Answer(s)
I purchased the Hyperion Zoom and the MPCC Mark III. Can you tell me how to adapt the eyepiece to the coma corrector?
I also want to use other eyepieces. How do I know the right distance between fieldstop position and the MPCC?
Question by: Vincent F. on Oct 7, 2016 1:08:00 PM | 1 Answer(s)
Hi, i purchased your mpcc mkiii, and i would like to know which ring i need to use with a nikon d800?
Question by: Ludovic duvert on Jul 4, 2018 8:37:00 AM | 2 Answer(s)
What specific camera adapter and spacers do I need to achieve the proper 55mm of back focus for photographic purposes between the MPCC Mark III and my Nikon Z7 mirrorless?
Question by: Craig A Smith on Jan 19, 2021 8:47:00 PM | 1 Answer(s)
I cannot get backfocus.
I am using an Orion Thin Off Axis Guider and a Full Frame Canon 6D Markii.
Your specs require the MPCC to be converted to M48 and for full frame the back spacing needs to be 57.5mm. But there is no adapter available on the market to get the extra 2.0-2.5mm I need.
Canon SLR 44mm
Orion Thin Guider 11mm
Scope is a GSO 200mm F4 Newtonian.
I have tried it using the M42 method with severe vignetting due to it not being full aperature and full frame camera in use.
I am out of ideas and would appreciate your help.
Question by: Micheal M on Jan 23, 2021 2:35:00 AM | 1 Answer(s)
On the image, I have a high circular reflection caused by the filter with the following setup:

Telescope: Newton 1000/200 F5
Camera: QHY294C
QHYCCD filter wheel CFW3M 5x50,8mm with:
Baader Narrowband CCD Filters 2" mounted OIII 8.5nm, SII 8nm, H-alpha 7nm
2" MPCC Mark III (back focus OK)

The reflection does not disappear when using flats.
Do you have any suggestions?

Thank you
Question by: Davide Benghi on Jun 3, 2021 11:12:00 AM | 1 Answer(s)
How long is the nose of the MPCC up to the stop ring? Why don't you publish these details?
Question by: Mark on Oct 5, 2021 10:52:00 PM | 1 Answer(s)
Please tell me how can I connect the 2" MPCC Mark III (Multi-Purpose Coma Corrector for Newtons) and the camera QHY 163m. Is there any ready-made solutions. If not, how to calculate the adapter? Thank you.
Question by: Alexander Vazhnov on Sep 18, 2017 8:33:13 AM | 1 Answer(s)
Hello.... I have a Celestron STarsense 130dx scope.... Can I use this 2” MPCC Mark III coma corrector with it..?
I would like to use my Sony a6500 with both...I have already used it with ocular projection, but there is a lot of stars with coma imaging.... thanks in advance..
Question by: Francisco Peraza on Mar 4, 2022 5:13:00 PM | 1 Answer(s)
I bought the MPCC to use with a Skywatcher Explorer 150d newton. Using an asi294mc, the only way I will get focus at infinity is to screw the corrector directly in the 11mm m42-m42 ring that comes with the asi. Adding spacers to reach 55mm doesn’t work. I am thus far from that 55mm that is supposedly required to reach focus. Any idea about what is happening here??
Question by: Christian R on Jul 8, 2020 4:50:00 PM | 1 Answer(s)
I have a Hyperion Zoom mark IV eyepiece which I use with a 16" f/4,5 Newtonian reflector.
Will it work properly if the coma corrector base element/main body is screwed directly into the 2" barrel of the Hyperion Zoom eyepiece?
Sincerely, Joachim
Question by: Joachim Mikkelsen on Jan 29, 2021 9:52:00 PM | 1 Answer(s)
I have just purchased the Orion 10" f/3.9 Newtonian Astrograph Reflector Telescope. Can you advise if the 2" MPCC Mark III (Multi-Purpose Coma Corrector for Newtons) is compatible. I will be fitting it to a cannon 400d camera.

Appreciate your help.

Many thanks
Question by: Pete Travis on Jul 24, 2020 7:50:00 PM | 1 Answer(s)
I would like to use a coma-corrector, for visual, on my f4.5 newton. Due to its price and performance, i find the mpcc mklll very interesting. So my question is: Is it possible to make the hyperion eyepieces parfocal - so i only have to adjust the coma corrector once ? I would like to use the 24mm, 13mm and 5mm hyperions. Regards Asbjørn Skou
Question by: Asbjørn Skou on Jan 11, 2022 9:35:00 PM | 1 Answer(s)
Do you supply the MPCC Mk 111 without the recess in the barrel?
This causes difficulties when used with clamps with a copper ring.
No problems with a smooth barrel.
Question by: Rob on Jan 17, 2021 9:32:00 PM | 1 Answer(s)
I have a ZWO ASI294MC Pro, which has 6.5mm of back focus, and I want to connect it to my MPCC. In your answer to Keith Krayanek's April 2018 question about a similar camera, you recommended spacers totaling 55mm. But adding 55m to 6.5.mm would equal 61.5mm. Is this number correct? Also, with a M48 mounting surface, do I need a total of 57.5mm of back focus (6.5mm + 51.0mm) or 64mm (6.5mm + 57.5mm)? Thank you.
Question by: Patrick Windham on Aug 17, 2019 8:32:00 PM | 1 Answer(s)
I am interested on 2" MPCC Mark III Coma corrector, but I have a Sony Alpha 900 Full Frame camera. Even though I understand I can use it "as it comes" with some vignetting, I wonder what else would I need in order to fit it not with the normal T2 but with the 48mm option to get (supposely) full coverage.
I have seen that the T2 adapter I already have include something very similar to this (https://www.baader-planetarium.com/en/baader-m48-spacer-ring-for-mpcc-iii--protective-eos-t-ring.html), so I wonder if I can just use the T2 adapter I have without that, or if I would need a different one, for example "Baader Wide-T-Ring Sony Alpha and Minolta Maxxum with D52i to T-2 and S52" (not sure if this is the one I have)
I am afraid once I have ordered the corrector I might end up needing something else...
Question by: Juan Gonzalez on May 28, 2020 10:59:00 PM | 1 Answer(s)
Hi there, I purchased this Corrector to use with my 600D canon and the 8"/1000FL Saxon Newtonian. I still have coma in the corners on the images despite it saying pin point across the field. Am I doing something wrong? I have the T-adaptor for the canon 600D
Question by: Adam Pickering on Dec 1, 2021 9:04:00 AM | 1 Answer(s)
Please can I ask if I use an MPCC, a Baader Flip II, and a UFC (four pieces, T2 in and out) Is my desired Backfocus of 55mm inclusive of the whole stack, i.e do I subtract the BF of the Flip Mirror, the UFC and the connectors from the 55mm and only add what I need to total to that Distance?
Question by: Christopher Edwards on Jan 28, 2022 4:15:00 PM | 1 Answer(s)
Can the MPCC be used with the Hyperion Zoom 2.25x Barlow lens for imaging? I can use the Focusing Eyepiece Holder and Varilock combination to connect them, but will this actually work and if so, what length should I set between the MPCC and Barlow?
Question by: Alex on Mar 12, 2020 9:21:00 PM | 1 Answer(s)
I have purchased a Baader MPCC Multi Purpose Coma Corrector Mark III for use with my Celestron CN-8 f/5 8 inch Newtonian reflector. I am using a Canon 1100D DSLR and standard Canon T-Ring adapter. When these are attached they are then attached to the tube using the Celestron 2 inch eyepiece adapter.

The problem I am having is that I cannot get the camera to focus using the MPCC and 2 inch eyepiece adapter. I am at the limit of the telescope focuser which cannot move the camera near enough to the focal point of the telescope.

I would have thought that the MPCC/Canon/Celestron combination would be a common one yet it doesn't work.

Do you have any suggestions how this could be solved? For example, are you aware of a shorter 2 inch eyepiece being available? Is there an attachment that can fit in to the threads at the front/inside of the MPCC which would replace the 2 inch eyepiece and allow the camera sensor to reach the focal point?

Question by: Neil Giblin on Oct 23, 2018 7:20:00 PM | 1 Answer(s)
I have 2'' MPCC Mark III and 2 cameras
DSLR Sony SLT-A99 and CCD QHY695A (according to FAQ back focus is 33mm without off axis guider and 46mm with off axis guider)

I already have Adapter ring from M48 to Sony Alpha bajonet

What adapters do I need to properly connect MPCC to each camera to ensure best coma correction.

Question by: Alexey on Sep 7, 2019 1:53:00 PM | 1 Answer(s)
Is the required 55mm distance to the coma corrector measured from the front of the focal reducer or from the location of the CMOS sensor inside the camera housing?.
Question by: David Lloyd-Jones on Mar 14, 2018 1:36:00 AM | 1 Answer(s)
I would like to use this coma corrector for a 10" f/5 dobsonian mostly with the following eyepieces: 2" Televue Nagler 31mm, ES100 20mm (both of these focus with minimum focuser extension). I see you display the ES100 20mm used with this coma corrector with no extension and attached directly to the eyepiece. I also have ES92 17mm and 12mm eyepieces. How are these attached and do they require extensions?
Question by: Neil Folberg on Jan 5, 2022 9:52:00 AM | 1 Answer(s)
How would I go about using the MPCC Mark III with a Sony A7s (which is a mirrorless DSLR)? Thanks!
Question by: John Hawk on Feb 24, 2018 5:06:00 AM | 1 Answer(s)
Can I use the MPCC Mark III coma corrector with a Baader Hyperion Universal Zoom Mark IV, 8-24mm eyepiece and/or Baader zero-tolerance protective Canon DSLR T-Ring T-2/M48 ?
Question by: eric Mutschele on Sep 15, 2019 5:19:00 PM | 1 Answer(s)
I want to use the full aperture of my D810A with the MPCCIII on a Meade f/4 Schmidt-Newtonian. What adapters to I need to achieve the ideal backfocal distance?
Question by: Kevin Walsh on Aug 19, 2019 4:12:00 PM | 1 Answer(s)
Is there possibility to connect 2" eyepice? if so which connector will fit?
Question by: Mateusz on Aug 21, 2019 9:27:00 AM | 1 Answer(s)
Several people have asked about using the M48 thread for use with Nikon F to M48 Mount adapters. You suggest using the EOS adaption which is no use at all. I would like to use the MPCC's M48 with an 8300 CCD system that has a 55mm Back Focus. How critical is the 55mm Back Focus? Would it still provide a sharp flat field for an 8300 sensor (22.5mm diagonal) at 57.5mm??
Question by: Rupert Smith on Oct 22, 2019 7:11:00 PM | 1 Answer(s)
Is it possible to connect the MPCC to a DT RING SP54 /M52 ?
If yes which intermediate ring should I use.?
Thank you
Question by: eric mutschele on Feb 14, 2020 5:07:00 PM | 1 Answer(s)
I would like to connect the MPCC Mark III to a ZWO ASI1600MC-Cooled camera that has 6.5mm back focus.

Do you sell the necessary spacers to do that?
Question by: Keith Krayanek on Apr 19, 2018 4:54:00 PM | 1 Answer(s)
I want a connecting ring between my Pentax K200D and the Multi Purpose Coma Corrector # 2458400. The coma corrector fits to a Newtonian telescoop from GSO (Guang Sheng Optical, Taiwan), the F4 model (reflector 200mm, focus 800mm). The only thing is that the register distance between the corrector and the filmplane must be correct for Pentax K. Registerdistance is the distance from last lenselement from a Pentax lens to the filmplane which is 45,46 millimeter.

Your website about your Baader T-ring tells, quote: “Represents the standard exact distance of 55.0mm from the front support surface of the T-ring to the image plane of the camera body forth”

Now, this 55,0mm is longer than the 45,46mm registerdistance from Pentax.
Does the ring still work and let focus?
Question by: P. Coene on Dec 29, 2016 3:49:00 PM | 1 Answer(s)


Baader MPCC Mark III - Multi Purpose Newton Coma Correktor

Coma corrector for Newton telescopes that neither reduces the focal length nor the image field of your telescope

Baader MPCC Mark III - Multi Purpose Newton Coma Correktor T2
Canon DSLR with Protective Canon DSLR T-Ring, M48 ring and MPCC for maximum clear aperture

The Multi Purpose Coma Corrector Mark III eliminates coma across the full photographic field without manipulating the focal length. The proprietory lens design has our Phantom Group™ wideband multicoating on all air to glass surfaces. This treatment delivers highest transmission combined with lowest amount of scatter and reflections across a very wide spectral range from UV to NIR. The original MPCC had been designed for an f/ratio of f4.5 to f6. The new Mark III however works exceptionally well even down to f3.5. Stars remain pinpoints across the field and the visual use likewise is made much easier - with the help of the 2" (M48) male filter thread at the eyepiece facing side.

Photographic Application

The base-element 2858400A is prepared for use with a DSLR and a standard T-ring, it can be used over the T-2 thread on all standard T-rings. Since the T-thread vignettes with cameras with larger sensors (such as full-format DSLRs), the T-2 thread can be removed. Then an M48 thread is free, and the free aperture increases from 38 to 44 mm. The M48 spacer ring for MPCC III / Protective EOS T-ring can be connected directly to the Protective CANON DSLR T-ring. 

This means that you do not only have sharp stars in the entire picture but also illuminate large sensors!

Visual and photographic application

In addition, the MPCC can be used both visually and photographically. The V-1 set # 2454803 contains the necessary adapters for most eyepieces or cameras with a 1.25 "socket - a detailed description can be found in the manual, which can be can be downloaded as a PDF under the tab "Downloads". The basic element of the MPCC can be upgraded at any time for visual use, all necessary parts are also available separately.

Baader MPCC Mark III - Multi Purpose Newton Coma Correktor T2

Technical data of MPCC Mark III

  • no change in focal length or field size, an f4 Newtonian remains f4.
  • calculated lens system - designed for an unvignetted field down to f3.5
  • maximum sharpness across the field - without center soft spot (as reported of other)
  • accepts T-2(M42x0.75) and/or 2"(M48x0.75) threaded photographic- or visual-adapters
  • 2" stopping collar removable for increase in backfocus
  • for photographic and visual use
  • easy to use
  • exceptional price/performance ratio
  • Phantom Coating™ Group multicoated for maximum transmission and freedom from reflections from UV to NIR
  • optional adapter for direct coupling of the MPCC III directly onto the Baader CANON EOS protective T-ring
  • 44mm clear aperture when using the M48(2") filter-tread or the Protective T-ring with optional adapter
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2 Item(s)

Harald 134/05/2020 14/05/202015:31
  • Rating:
MPCC III & IR Cut Moon & Skyglow Filter
Die Ware wurde pünktlich wie angekündigt geliefert. Der Koma-Korrektor wurde vollständig inkl. Zubehör und mit einer ausführlichen Beschreibung geliefert.
Ich habe im Anschluss alle Varianten mit Verwendung einer Astrokamera als auch mit meiner Vollformat DSLR ausprobiert.
Ich habe mir den MPCC Mark III deshalb bestellt, da ich mit dem Korrektor, der mit dem Newton mitgeliefert wurde, vor allem mit der Vollformat DSLR keine überzeugenden Ergebnisse z. B. bei Komet C/2019 Y4 ATLAS, im Randbereich des Bildes erreichen konnte.
Die erste Anwendung mit dieser Ausstattung, war ein Versuch in der letzten Vollmondnacht. Die Ergebnisse waren auf jeden Fall zufriedenstellend, wenn mir auch für wirklich gute Ergebnisse das schlechte Seeing in dieser Nacht einen Strich durch die Rechnung machte. Vor allem auch durch Einsatz des Filters waren gute Belichtungszeiten möglich, wenn auch durch das Seeing das Fokussieren schwierig war.
Auf jeden Fall bin ich schon auf weitere Beobachtungen vor allem im Bereich Deep Sky am Newton gespannt und neugierig.
  • Die vielfache Anwendbarkeit durch die div. Adapter
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Wolf-Matthias 47/02/2019 17/02/201921:09
  • Rating:
Erstklassiges System für Fotographie und Beobachtung
Der Baader MPCC für den visuellen und photographischen Gebrauch kommt in gewohnter Baader Qualität und überzeugt durch präzise Fertigung und funktionales Design, welches eine eigene Ästhetik ausstrahlt. Dieses durchdachte Kombipaket erlaubt die schnelle Adaption an Okulare oder Kameras. Ein hervorragendes Produkt. Als Ziel für das First Light für Teleskop und Kamera und den MPCC wählte ich H&Chi Persei. Der Komakorrektor überzeugt optisch und mechanisch. Die große Linse und die Möglichkeit durchgängig 2“ oder T2 Adapter / Hülsen zu verwenden ist ein Garant für gut ausgeleuchtete, große Sensoren. In meinen Augen eine klare Kaufempfehlung.

Zum Bild: 10 Sekunden, unguided, Innenstadthimmel einer Großstadt, 2" Baader Moon & Skyglowfilter, Baader MPCC, 130mm F5 Newton
  • Alles
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