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Blue Fireball M48 (2" Filter) Male Thread to M28.5 (1.25" Filter) Female Thread Adapter # M-01

4.8 (12 Reviews) Read Reviews Write Review
Brand Blue Fireball
Part Number M-01
Availability available

Product Info

Manufacturer Description

Black anodized aluminum adapter with a male 2" filter thread (M48x0.75) on one side and a female 1.25" filter thread (M28.5x0.6) all the way through. Allows you to use 1.25" filters on 2" eyepieces and accessories. Maximum outer diameter of this adapter is 2" so it will also slide into 2" focuser tubes. Total thickness = 4.5mm.

Blue Fireball part number: M-01

Reviews

4.8 (Based on 12 Reviews) 92% of reviewers recommended this product.
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    1. Guest

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      Review by Gregory J.
      1541541966
      Nov 6, 2018

      5.0 Blue Fireball 2" to 1.25" filter adapte.

      Pros:

      Cons:

      Comments:

      This was the perfect product for what I required. Thank you so much for the excellent service.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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      Review by Tino C.
      1533462009
      Aug 5, 2018

      5.0 Adaptor

      Pros:

      Cons:

      Comments:

      Good quality

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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      Review by Eleni I.
      1499773529
      Jul 11, 2017

      5.0 Thanks good quality very good

      Pros:

      Cons:

      Comments:

      Thanks good quality very good packing fast shipping

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    4. Guest

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      Review by nataala of Port Harcourt, Nigeria.
      1475193600
      Sep 29, 2016

      5.0 Accurately Made. Fully Functional.

      Pros:

      Compact,Lightweight,Easy to Use,Ships to Nigeria!,Accurate,Strong Construction

      Cons:

      Comments:

      I needed a compact, very well made filter holder to connect my 1.25" filters with my HyperStar system to allow me do fast dso imaging.

      The default product did not ship to Nigeria and "no" was not an option.

      So I researched the matter and asked questions and this and another product came up. Raeding product reviews online, I settled for this one.

      I have no regrets. It is a solid, very well finished perfect fit for my HyperStar. The threading is a perfect match and there is no play whatsoever.

      Just fyi; since the HyperStar's own lensholder is proprietary, I had to grind a dedicated filter holder down to allow the combination slide into the Hyperstar. But that is not a con for this product. It was designed to mate a 1.25" filter with a 2" opening and it does so perfectly.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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      Review by Nob of Orem UT.
      1424822400
      Feb 24, 2015

      4.0 Be careful in the thickness

      Pros:

      Easy to Use,Strong Construction,Lightweight

      Cons:

      The Thickness Of The Edge

      Comments:

      I have used in the filter slider.
      The thickness of the edge has to be noted that there 2.5mm.
      Some filters did not enter the slider.
      However, it could be used with little cutting the cell of filter with sandpaper.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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      Review by Russ G of Silicon Valley, CA.
      1424476800
      Feb 20, 2015

      4.0 Thin Profile, Machined well, Works

      Pros:

      Cons:

      Comments:

      This thin profile adapter fits inside of my Orion 2" filter wheel, and lets me use 1/25" filters inside. It it well made, the threads fit nicely. There are two indentations for a spanner wrench to help remove the adapter, but I find my fingers have no trouble removing it without tools.

      I will buy another of these

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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      Review by AZ STARGAZER of Mesa, AZ.
      1377734400
      Aug 28, 2013

      5.0 Great addition

      Pros:

      Easy to Use,Lightweight,Compact,Strong Construction

      Cons:

      Comments:

      I have had this adaptor for 5 months now and I gotta tell ya this is a great addition to my astronomy setup. I use it mostly on my 35 panoptic. It helps me find nebulas and allows me to use my OIII and Light polution filters. It also saves my $$ as I do not have to purchase a 2 inch filter. YEAH, more eyepieces to buy with saved money.. But in all honesty it does work and allows a 2 inch Ep use a 1.25 filter. the one drawback is you are making your 2 inch EP act like a 1.25 filter as you are stopping it down to which I have no objection too. If you are looking to use that 2 inch Ep and use your 1.25 filter and dont mind the stopping down than this adaptor is for you.

      Bottom Line: Would you recommend this item? No
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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      Review by Dale of Midwest.
      1364083200
      Mar 23, 2013

      5.0 Simple filter solution that works

      Pros:

      Strong Construction

      Cons:

      None

      Comments:

      Allows use of cheaper 1.25 filters on 2" eyepieces. Works as advertised. Allows me to use 1.25 filters on my 2" televue 17 mm nagler. Great simple product.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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      Review by Chuck Hunt of Brook Park, Ohio.
      1363996800
      Mar 22, 2013

      5.0 Filter Adapter

      Pros:

      Strong Construction

      Cons:

      Comments:

      This is an excellent adapter to use 1-1/4" filters in a 2" to 1-1/4" eyepiece adapter if you don't have any 2" filters. It screws into the eyepiece adapter. the 1-/14" filter can then be screwed into the Blue FireBall adapter. The filter can be screwed into either side. I sometime screw the filter into the top, toward the eyepiece side so it doesn't stick out. You can change eyepieces as the filter isn't screwed into the eyepiece.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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      Review by MarkA of Austin, TX.
      1360368000
      Feb 8, 2013

      5.0 Nothing else like it in the US

      Pros:

      Compact,Accurate

      Cons:

      Comments:

      This solved a problem that I couldn't solve any other way. There is literally nothing else like this in the US that I have been able to find. I wanted to mount a spectroscopy grating in a 2" nosepiece rather than a 1.25". This worked perfectly for that application. There is only one other part like this that I have found, but it's in Germany and shipping it costs a fortune.
      I sent an email inquiry about such a part of received a reply within just a few minutes and was able to place an order the same day. Couldn't be any happier!

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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      Review by bwana of Bergen, Alberta, Canada.
      1348272000
      Sep 21, 2012

      5.0 Just what the doctor ordered!

      Pros:

      Does The Job Well

      Cons:

      Comments:

      Required to reduce 2" filter opening for use with 1-1/4" filters

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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      Review by KC9MDO of Illinois.
      1336867200
      May 12, 2012

      5.0 Been looking for this!

      Pros:

      Accurate,Easy to Use,Compact

      Cons:

      Comments:

      I have a moonlight focuser with the filter swingarm option. That takes a 2" filter and lets you swing it in and out of the light path with the flick of a lever. I have many 1.25" filters that I can now use once I buy this item. I Will expect to work as advertised; nothing too complicated about the concept. I Love Agena!

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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