Showing 17 results
  • Stellarvue 0.8X Reducer Flattener for f/7 Refractors with 2" FocusersSV-SFFR102-2
    $195.00
    ★★★★★6 review(s)
  • Orion Field Flattener for Short RefractorsOR-08893
    $149.99
    ★★★★★6 review(s)
  • Teleskop Service 1.0x Flattener for RC Telescopes - Full-sized M68 ConnectionTS-RCFLAT3
    $349.99$376.49
  • William Optics Flat61A Adjustable Field Flattener for ZenithStar 61WO-P-FLAT61A
    $229.00
    ★★★★★11 review(s)
  • Explore Scientific 3" Field Flattener 0.7x Focal ReducerES-FFFR507X-00
    $479.99
    ★★★★★4 review(s)
  • Hotech SCA Field FlattenerHT-SCA-FFT58
    $175.00
    ★★★★★6 review(s)
  • Stellarvue 0.8X Reducer Flattener for SVR102T with 2.5" FocuserSV-SFFR102-25
    $229.00
  • William Optics Field Flattener - Adjustable Flat73A For Z73WO-P-FLAT73A
    $229.00
    ★★★★★3 review(s)
  • Stellarvue Reducer/Flattener for SV70TSV-SFFR-70APO
    $269.00
  • Takahashi FSQ-85EDX FlattenerTK-TKA37582
    $328.00
  • William Optics x0.72 Reducer Flattener 8WO-P-FLAT8
    $806.00
  • William Optics x0.8 Full-Frame Reducer-FlattenerWO-P-FLAT7A
    $691.00
    ★★★★★1 review(s)
  • Takahashi FC/FS Multi Flattener 1.04X - for FC and FS Fluorite DoubletsTK-TKA00582
    $264.00
    ★★★★★1 review(s)
  • William Optics Field Flattener 68IIIWO-P-FLAT68III
    $656.00
    ★★★★★2 review(s)
  • Takahashi Flattener 0.93x for FOA-60 TelescopeTK-TKA28582
    $443.00
  • Takahashi TRD0060 Field Flattener - FS60CTK-TKA20580B
    $710.00
  • Astro-Physics 2.7" Prime Focus Field Flattener (67PF582)AP-67PF582
    $969.00
    ★★★★★1 review(s)

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FAQs

Still have questions? We have answers.

What does a field flattener do for a telescope?

A field flattener, also known as a field corrector, is an accessory used in astrophotography that helps to eliminate optical aberrations caused by the curvature of the telescope's focal plane. By attaching a field flattener to the back of the telescope, astrophotographers can significantly reduce or completely remove coma, astigmatism, and other distortions from their images. This can result in sharper, more detailed photos of distant cosmic objects such as galaxies and nebulae.

Do I need a field flattener?

Whether or not you need a field flattener for your telescope really depends on what type of astrophotography you plan to do. If you’re photographing wider-field objects such as star clusters and galaxies, then a field flattener can help to eliminate optical aberrations, resulting in sharper and more detailed photos. However, if you’re imaging planetary objects, which tend to be smaller and require higher magnification, then a field flattener may not be necessary.