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Baader Planetarium Narrowband H-Alpha Telescope Filter 7nm

Item# AAS012
 
5.0

(3 Ratings)

Customer Q & A
Details & Dimensions
Guarantee & Returns
  • Delivers highest contrast deep sky images of H-II regions
  • Photographic filter
  • No loss in sharpness or contrast
  • Available in both 1.25 and 2 inch formats

Description

CCD imagers will find Baader's new Narrowband 7nm H-Alpha passfilter to deliver the absolute highest contrast deep sky images of H-II regions, with the shortest exposures possible. Its narrow 7nm FWHM bandwidth has a transmission at H-Alpha of over 90%, while completely rejecting light pollution.
The high optical quality of the Baader 7nm H-Alpha filter guarantees no loss in sharpness or contrast. Each substrate is fine-optically polished plane parallel to deliver a smooth and accurate 1/4 wavefront over the entire surface. This special custom polishing operation sets Baader filters apart from the standard commercially precision polished filter substrates used by most other filter manufacturers. Coatings are professionally applied by the most sophisticated equipment available, ensuring high consistency for bandpass centering and transmission. The ultra-hard ionbeam deposition ensures the coatings will never degrade from use or normal cleaning.
This filter is available in two sizes, standard 1.25" and a 50.8mm diameter bare substrate (unmounted) for use in SBIG STL cameras.
CHOKING HAZARD - small parts may pose a risk to children under 6 yrs.

Dimensions & Specifications

Size

1.25 Inches , 2 Inches

Warranty

2 Year Manufacturers Warranty

Type

Narrowband Filters

Brand

Baader Planetarium

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The Perfect Accessories

Customer Reviews

REVIEW SNAPSHOT®

by PowerReviews
Baader Planetarium Narrowband H-Alpha Telescope Filter 7nm
 
5.0

(based on 3 reviews)

Ratings Distribution

  • 5 Stars

     

    (3)

  • 4 Stars

     

    (0)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Great optics (3)

Cons

    Best Uses

    • Astrophotography (3)
      • Reviewer Profile:
      • Casual/ recreational (3)

    Reviewed by 3 customers

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    Displaying reviews 1-3

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    (2 of 2 customers found this review helpful)

     
    5.0

    Excellent For Narrowband Ha Imaging

    By Terrance

    from COLORADO SPRINGS,CO

    About Me Casual/ Recreational

    Verified Buyer

    Pros

    • Easy To Use
    • Great Optics
    • Strong Construction

    Cons

      Best Uses

      • Astrophotography

      Comments about Baader Planetarium Narrowband H-Alpha Telescope Filter 7nm:

      I purchased this primarily for adding Ha to my RGB images that I take with a modified DSLR. I've only imaged NGC 6888, the Crescent Nebula, so far and am extremely pleased with the combined HaRGB image.

      • Was this a gift?:
      • No

      (2 of 2 customers found this review helpful)

       
      5.0

      High quality Ha filter!

      By Tony

      from Oklahoma City, OK

      About Me Casual/ Recreational

      Verified Buyer

      Pros

      • Easy To Use
      • Good Padding
      • Great Optics
      • Strong Construction
      • Widely Compatible Adapter

      Cons

        Best Uses

        • Astrophotography

        Comments about Baader Planetarium Narrowband H-Alpha Telescope Filter 7nm:

        This Ha filter fits perfectly into 2" threaded adapters for astrophotography. It is very high quality and comes in a great case. I can't wait to do some long exposure astrophotography with my modified canon DSLR with this beautiful filter! Great for narrowband imaging.

        • Was this a gift?:
        • No

        (8 of 8 customers found this review helpful)

         
        5.0

        An Excellent Narrowband Filter

        By Budboy

        from Derry, NH

        About Me Casual/ Recreational

        Verified Buyer

        Pros

        • Great Optics

        Cons

        • Deep filter cell

        Best Uses

        • Astrophotography

        Comments about Baader Planetarium Narrowband H-Alpha Telescope Filter 7nm:

        This is an excellent filter for narrowband imaging of emission nebulae. The 7nm bandwidth provides high contrast images and allows you to image even with a full moon. Most filter cells average around 7mm in depth. The cell holding the Baader filter is deeper so this filter may not fit in certain filter holders and filter wheels. Make sure you have adequate space in your filter holder or filter wheel to accept this filter. One solution to this problem is to remove the glass filter (very carefully)from its cell and install it in a thinner filter cell. You will loose the advantage of Baader's extra thin cell wall, which provides the most clear aperture of any 2" filter available but at least you will be able to use this excellent filter. Please note you will have absolutely no problem if you are screwing the Baader onto the barrel of a 2" eyepiece or extension tube.

        Displaying reviews 1-3

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