Dismiss Notice
New Cookie Policy
On May 24, 2018, we published revised versions of our Terms and Rules and Cookie Policy. Your use of AstronomyConnect.com’s services is subject to these revised terms.

More Views

Lunt Solar Systems 1.25" 7.2mm-21.5mm Zoom Eyepiece # LS7-21ZE

4.8 (8 Reviews) Read Reviews Write Review
Brand Lunt Solar Systems
Part Number LS7-21ZE
Availability available

Product Info

Manufacturer Description

The Lunt Zoom Eyepiece # LS7-21ZE offers ideal magnifications for the standard focal lengths of Lunt H-alpha solar telescopes. It's an ideal 'first look' eyepiece that allows you to quickly view the Sun at a lower magnification, then zoom to higher magnification to see interesting details.

The focal length of this 1.25" eyepiece ranges from 7.2 mm to 21.5 mm with graded markings at focal lengths of 7.2mm, 10mm, 13.5mm, and 21.5mm. The power change ring on the eyepiece features a ribbed gripping surface that makes it easy to make small power changes between these ranges, even when wearing gloves.

The optics in the eyepiece consists of 7 multi-coated lens elements in 4 groups for clear, crisp images. The apparent field of view ranges from 40 degrees at 21.5mm to 60 degrees at 7.2mm. Eye relief is a comfortable 15mm and the barrel is threaded for standard 1.25" filters when the eyepiece is used for general non-solar observing.

While designed for solar observing with a Lunt solar telescope, this eyepiece can also be used for general terrestrial or night-time observing with a non-solar telescope. (Note: For safe solar observation, this eyepiece MUST be used with a solar telescope equipped with safe solar filters).

The Lunt Zoom Eyepiece is great little eyepiece at an affordable price.

Reviews

4.8 (Based on 8 Reviews) 100% of reviewers recommended this product.
Rating Distribution
Sort by
  • Date
  • Rating
  • Useful
    1. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by sergio f.
      1552588280
      Thursday

      5.0 Great Eyepiece

      Pros:

      Cons:

      Comments:

      So far this eyepiece has worked out really well with my 90mm Coronado Solarmax II. Great range and great views in one convenient, small and lightweight package. I originally had purchased a Baader Hyperion Zoom for this scope but I like this one better. Works great on night time targets as well. Excellent value, highly recommended.

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

      This review was provided courtesy of AgenaAstro.com

    2. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Freddy D.
      1526475702
      May 16, 2018

      5.0 Great purchase

      Pros:

      Cons:

      Comments:

      I first looked through this zoomed eyepiece in a friend's h-alpha telescope and got in love with it.
      I works wonderfully on my Coronado PST.

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

      This review was provided courtesy of AgenaAstro.com

    3. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Robert K.
      1498685005
      Jun 28, 2017

      4.0 Good EP

      Pros:

      Cons:

      Comments:

      Only beef I have is that at the lowest power the FoV is cut off before the field stop, making for a fuzzy edge. Other than that it's very sharp across the field and well built. Zoom is very smooth and easy.

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

      This review was provided courtesy of AgenaAstro.com

    4. Dave Bl

      Dave Bl New Member

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Dave B.
      1497128455
      Jun 10, 2017

      5.0 Excellent little zoom eyepiece

      Pros:

      Cons:

      Comments:

      Got this to use with my Lunt Solar scope and it gives great images at all focal lengths. You do have to tweak the focus a little as you zoom in or out, but the images are excellent for the price. I've also used it on my 12" Dob and it's fun to zoom in on Jupiter or bright deep sky objects like M13.

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

      This review was provided courtesy of AgenaAstro.com

    5. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Amanda D.
      1494367964
      May 9, 2017

      5.0 Lunt 1.25" 7.2-21.5mm zoom

      Pros:

      Cons:

      Comments:

      The Lunt Zoom eyepiece is wonderful and so very convenient. One eyepiece that allows multiple magnification is sweet! You may need to adjust the focus as you move through the different levels, but well worth it. I've been concentrating on Jupiter recently and the viewing has been very crisp. Solar detail has been crisp as well. The image is very clear with little to no warping near edge of view. Excellent eye relief. Works equally well in my solar scope and refractor (120mm). I recommend this eyepiece! 5 stars and a planet or 2.

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

      This review was provided courtesy of AgenaAstro.com

    6. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Chuck of Brook Park, Ohio.
      1424476800
      Feb 20, 2015

      5.0 Lunt Zoom Eyepiece

      Pros:

      Easy to Use,Accurate,Quality Lenses,Strong Construction

      Cons:

      Comments:

      This is an excellent zoom eyepiece. I use it regularly on my Sun observing telescopes now, with solar filter of course. Also can be used for regular night sky telescope observing. It doesn't have click lock for the different focal lengths but I like that better.

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

      This review was provided courtesy of AgenaAstro.com

    7. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by yostarsh of Japan.
      1413590400
      Oct 17, 2014

      4.0 Good zoom eyepiece

      Pros:

      Easy to Use,Compact

      Cons:

      Comments:

      Image is not degraded even zoom

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

      This review was provided courtesy of AgenaAstro.com

    8. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by John V. of El Paso, TX.
      1408838400
      Aug 23, 2014

      5.0 The best EP in my collection

      Pros:

      Easy to Use,Quality Lenses

      Cons:

      Comments:

      I purchased this EP to use with my solar scope but now I use it with all of my scopes. It is very easy to use and has decent optics. The variable zoom eliminates the need to bring different EP's to the field.

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

      This review was provided courtesy of AgenaAstro.com

    Sort by
    • Date
    • Rating
    • Useful

      Specifications

      Apparent Field of View 53°
      Barrel Size 1.25" (31.7mm)
      Bolt Case Included Yes - Free Agena Eyepiece Container
      Bolt Case Size Agena 52x80mm
      End Caps 2
      Eye Relief by Design 15mm
      Focal Length 7.20mm
      Lens Elements 7
      Lens Groups 4
      Rubber Eye Guard Twist-up Eyecup
      Manufacturer Lunt Solar Systems
      Eyepiece Focal Length Variable Range
      Eyepiece Field of View 51 - 60 degrees
      Barrel Type With safety undercut
      Filter Threads Standard 1.25" Filter Thread (M28.5 x 0.6)
      Eyepiece Weight 5.50oz (155.92g)