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Meade f/3.3 CCD Focal Reducer/Field Flattener and Variable T-Adapter

Item# MEAD094
 
3.5

(5 Ratings)

Customer Q & A
Details & Dimensions
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Description

Meade f/3.3 CCD Focal Reducer / Field Flattener and T-Adapter.


For ultra-fast CCD imaging with increased edge-of-field resolution and color correction.  Reduces exposure times by up to 80%.  Threads into rear cell of Schmidt-Cassegrain telescopes. 


Includes a vaiable T-Adapter to allow the choice of an additional f/3 or f/5 focal ratio with an f/10 SCT.


The f/3.3 CCD Focal Reducer duplicates the rear cell thread of the telescope, allowing you to attach all standard rear cell accessories.  Not intended for visual use.


CHOKING HAZARD - small parts may pose a risk to children under 6 yrs.

Supplier Sku:
07567

Dimensions & Specifications

Warranty

1 Year

Brand

Meade

Telescope Accessories Series

Meade Focal Reducer / Field Flatteners

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Customer Reviews

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Meade f/3.3 CCD Focal Reducer/Field Flattener and Variable T-Adapter
 
3.4

(based on 5 reviews)

Ratings Distribution

  • 5 Stars

     

    (0)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

Reviewed by 5 customers

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(8 of 8 customers found this review helpful)

 
2.0

Only good for small sensors (< 0.5")

By Lord Beowulf

from Cedar Park, TX

About Me Casual/ Recreational

Verified Reviewer

Pros

    Cons

      Best Uses

      • Astrophotography

      Comments about Meade f/3.3 CCD Focal Reducer/Field Flattener and Variable T-Adapter:

      Having used an f/6.3 reducer and after reading the reviews here I expected this to give me great wide-field photos with my 8" f/10 SCT. Unfortunately that's really asking too much of an f/10 scope. What this is really designed to do is to reduce the available field of view enough to fit it all on a very small CCD imager. For something larger or for a DSLR, the f/6.3 already does about as much as is possible. More importantly, no matter which of the T-adapter spacers I used, I was never able to get a good prime focus with the range of focus supported by my scope, even for the small sensor area that it covered.

      The other disappointment with this kit was in the variable T-adapter. The idea was great, but the quality of the parts I received was lacking. While the parts fit together marginally well, only one of the three sections freely threaded onto my T-ring, with the others binding after a turn or two due to shallow threads.

      (3 of 3 customers found this review helpful)

       
      4.0

      Meade f3.3 Focal Reducer

      By Jim

      from Madison, Wisconsin

      Verified Buyer

      Comments about Meade f/3.3 CCD Focal Reducer/Field Flattener and Variable T-Adapter:

      The Meade f/3.3 Focal Reducer/Field flattener has superb optics, and I’ve been able to produce some excellent astrophotos with it, using my Deep Sky Imager. For what it can accomplish it rates five stars. However, I can only give it four stars because of a problem that is hinted at, but not stated specifically in the brochure that came with the unit. The instructions state that there are "focusing limitations" with color filter systems, an off-axis guider, and flip-mirror systems, and that the unit is not recommended for visual observing. In fact, focusing limitations make some types of visual observation difficult, if not impossible. In my scope, with the unit in place, I cannot achieve any focus with a diagonal used with an eyepiece. Focus can only be acquired without a diagonal, that is, in a straight-through configuration. Visual focusing and centering with an eyepiece, prior to astroimaging is highly desirable even with a "go-to" telescope like mine. In contrast, the Meade f/6.3 Focal Reducer (which I also acquired from your firm) can be focused using a diagonal.

       
      3.0

      Makes imaging easier

      By Photooo7

      from Wichita, Kansas

      About Me Advanced amature

      Verified Buyer

      Pros

      • Does what it should

      Cons

        Best Uses

          Comments about Meade f/3.3 CCD Focal Reducer/Field Flattener and Variable T-Adapter:

          Makes imaging easier, Provides a wider field and faster Focal ratio.[...]

           
          4.0

          f3.3 ccd focal reducer/flattener

          By garry ingle

          from Undisclosed

          Comments about Meade f/3.3 CCD Focal Reducer/Field Flattener and Variable T-Adapter:

          I think this is a great prouduct images are better than exspected

           
          4.0

          Works as Advertised

          By Art Braun

          from Undisclosed

          Comments about Meade f/3.3 CCD Focal Reducer/Field Flattener and Variable T-Adapter:

          The Focal reducer field flattener works well with my Meade DSI. The only drawback for me is the fit on my ETX scope. There are situations where I cannot put it al together because of how tight the space is on the alt/az mount. Since not much can be done about that, it's not really a complaint, more a lament. It's a great excuse to upgrade to the scope on my wish list at some time in the near future.

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          Customer Q & A

          Q1: I want to know whether this reducer uses for meade lxd 75 SC8" Or Not

          A: Yes this focal reducer can be used with an Meade LX series telescope it threads on to the rear cell of all Meade LX-Series mirror-lens telescopes

          Q2: How does this focal reducer attach to the Meade DSI? The DSI has a 1 and 1/4 adapter and the variable T adapter with the focal reducer appears to be much wider? Is the diagonal not used with this setup?

          A: this does not attach to the DSI itself it Threads on to the rear cell of all Meade LX-Series mirror-lens telescopes. you would then thread teh diagonal to it and the DSI in the diagonal.

          Q3: I would like to know if 3.3 reducer can be used with flip-mirror for locating and corrections

          A: You could but there would be no reason as all a Focal reducer is designed to allow you to do is shorten your F/Ratio for imaging.

          Q4: Hello, I like to no if this focal reducer will work with a meade etx-90 and the dsi?

          A: Yes, it will. Meade has just come up with an adapter that will allow SCT accessories to be attached to ETX-series scopes. Attach the adapter to the scope and the focal reducer/field flattener to the adapter, and you have it! To see the adapter, just paste this URL into your browser's address window: http://telescopes.com/products/Meade_ETX_Back_Cell_Adapter_to_SCT_Thread_43547.html.

          Q5: Why is it not recommended to use focal reducer for visual applications?

          A: We recommend against using the focal reducer for visual applications because your eye does not have the same optical qualities as a camera. As a result, everything will be indistinct.

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