Browse
Cart
cload
Checkout Secure
Spend £99 to Unlock Free Shipping to UK Mainland  

Got a Question? UK Landline

Phone Icon +44 20 8064 2116

Mon-Fri 9am-5pm GMT

Altair ULTRA 3nm Oiii Narrowband Filter 2" CERTIFIED

  • Image of

    Free Shipping over £99*

  • Image of

    Fast UK Delivery 1-3 Business Days*

  • Image of

    Extended Warranty

  • Image of

    Authorised Dealer

Altair ULTRA 3nm Oiii Narrowband Filter 2" CERTIFIED

Your Price:
£399.00
Add to wishlist
Checkout Secure

  

  

Product information

The Altair Astro 3nm ULTRA filters are designed for astro imaging of nebulae with Mono CCD or CMOS cameras, blocking light pollution by cutting out the light pollution wavelengths. The filter blocks UV IR and has an anti-halo AR coating to stop halos around bright stars.

Another Altair first - each filter comes with an individual spectrographic report, your guarantee the filter is within tolerance.

  • A 3nm FHWM gives higher contrast compared to say 6nm FHWM filters, for heavily light-polluted urban areas.
  • OD4 blocking in visual wavelengths (~0.01%), for ultra high contrast on very faint objects. 
  • No halos. We have not had any reports of halos caused by this filter.
  • AR (Anti Reflection) coatings suppress halo effects and internal reflections for more pleasing star images.
  • The emission lines of artificial lighting (mercury (Hg) and sodium (Na) as well as skyglow are completely suppressed, allowing for long exposures in urban conditions. LED lighting outside the filter bandpass is also blocked. 
  • Steep transmission curves with narrow pass-bands give high image contrast. Advanced UV/IR blocking coatings give small star sizes even with refractor optics.

These filters perform best from F4.8 or slower optics. Optics faster than F4.8 will still work, but there will be a reduction in contrast. For best performance, we recommend F4.8 or slower optics. An F6 refractor with an 0.8x reducer would give F4.8, and an F7 refractor with 0.8x reducer would give F5.6.

Ultra-flat BK7 glass housed in a precision CNC machined filter cell for strain-free mounting, and freedom from tilt. Filters are 1.85mm thick, 1/4 wave flatness, with 30 arc seconds parallelism. SIO2 tough overcoating for easy cleaning using commercially available optical cleaning products. CWL tolerance is 0.5nm and the measured Transmission at the target wavelength is approximately 90% with a 1% tolerance.

You can order the complete set for a discounted price. Please search product code: F2003NMSHO-SET


Product Info

MPN F200OIII3NM
COMMODITYCODE 90022000
MPN F200OIII3NM
GTIN 0700900306607
Brand Altair
Product Code F200OIII3NM
Delivery Weight Package
 0.5kg

 

  • Image of

    Free Shipping over £99*

  • Image of

    Fast UK Delivery 1-3 Business Days*

  • Image of

    Extended Warranty

  • Image of

    Authorised Dealer

Shipping This item ships to

Shipping

Shipping This item ships to
Altair ULTRA 3nm Oiii Narrowband Filter 2

Altair ULTRA 3nm Oiii Narrowband Filter 2" CERTIFIED

£399.00
Add to wishlist
Altair ULTRA 3nm Oiii Narrowband Filter 2

Altair ULTRA 3nm Oiii Narrowband Filter 2" CERTIFIED

Your Price:
£399.00
Item Added to Your Cart
Add One of These Popular Items
Altair 0.8x M54 Reducer for Altair 60EDF Refractor and Starwave 60ED Refractor Altair 0.8x M54 Reducer for Altair 60EDF Refractor and Starwave 60ED Refractor
£125.00
Altair 1.0x M54 Flattener for Wave Series 60EDF and Starwave Series 60ED Refractor Altair 1.0x M54 Flattener for Wave Series 60EDF and Starwave Series 60ED Refractor
£99.50
Altair 2nm G-Band Solar Contrast Filter - 1.25 Altair 2nm G-Band Solar Contrast Filter - 1.25" 430.3nm
£179.50
Altair 2nm G-Band Solar Contrast Filter - 2 Altair 2nm G-Band Solar Contrast Filter - 2" 430.3nm
£269.00
Altair 678C Colour USB3 Astronomy Camera Altair 678C Colour USB3 Astronomy Camera
£259.00
Altair DualBand ULTRA 4nm CERTIFIED CMOS Filter 2 Altair DualBand ULTRA 4nm CERTIFIED CMOS Filter 2" w test report
£399.00
Altair GPCAM3 178C USB3 Colour Guide Imaging EAA Camera Altair GPCAM3 178C USB3 Colour Guide Imaging EAA Camera
£199.00
Altair GPCAM3 224C USB3 Colour Guide Imaging EAA Camera Altair GPCAM3 224C USB3 Colour Guide Imaging EAA Camera
£199.99
Altair GPCAM3 287M Mono USB3 Camera Altair GPCAM3 287M Mono USB3 Camera
£299.50
Altair GPCAM3 290C USB3 Colour Guide Imaging EAA Camera Altair GPCAM3 290C USB3 Colour Guide Imaging EAA Camera
£199.99
Altair GPCAM3 290M USB3 Mono Guide Imaging EAA Camera Altair GPCAM3 290M USB3 Mono Guide Imaging EAA Camera
£199.00
Altair Ha Sii Oiii DualBand ULTRA 4nm Filter COMBO Altair Ha Sii Oiii DualBand ULTRA 4nm Filter COMBO
£749.00
Altair Precision Locking Focuser for Auto Guiding with Starwave 60ED Refractor Altair Precision Locking Focuser for Auto Guiding with Starwave 60ED Refractor
£99.50
Altair Sii Oiii DualBand ULTRA 4nm CERTIFIED CMOS Filter 2 Altair Sii Oiii DualBand ULTRA 4nm CERTIFIED CMOS Filter 2" w test report
£399.00
Altair Starwave 80ED-R ED Doublet Refractor Telescope Altair Starwave 80ED-R ED Doublet Refractor Telescope
£699.00
Altair Starwave Ascent 60ED Imaging Refractor Telescope Altair Starwave Ascent 60ED Imaging Refractor Telescope
£379.00
Altair Starwave Ascent 60ED Refractor MG32 Guider, GPCAM and 0.8x Reducer COMBO Altair Starwave Ascent 60ED Refractor MG32 Guider, GPCAM and 0.8x Reducer COMBO
£724.00
Altair Starwave Ascent 70ED Telescope - Visual Bundle Altair Starwave Ascent 70ED Telescope - Visual Bundle
£499.00
Altair Starwave Ascent 80ED F7 Refractor Telescope Geared Focuser Altair Starwave Ascent 80ED F7 Refractor Telescope Geared Focuser
£499.00
Altair ULTRA 3nm Ha Narrowband Filter 2 Altair ULTRA 3nm Ha Narrowband Filter 2" CERTIFIED
£399.00
Altair ULTRA 3nm HSO Narrowband Filter SET 2 Altair ULTRA 3nm HSO Narrowband Filter SET 2" CERTIFIED
£1,095.00
Altair ULTRA 3nm Oiii Narrowband Filter 2 Altair ULTRA 3nm Oiii Narrowband Filter 2" CERTIFIED
£399.00
Altair ULTRA 3nm Sii Narrowband Filter 2 Altair ULTRA 3nm Sii Narrowband Filter 2" CERTIFIED
£399.00
Bresser Pirsch 25-75X100 Spotting Scope Bresser Pirsch 25-75X100 Spotting Scope
£466.99
Celestron AstroMaster 130EQ Newtonian Telescope Celestron AstroMaster 130EQ Newtonian Telescope
£299.99
Celestron Hummingbird 9-27x56 ED Micro Spotting Scope Celestron Hummingbird 9-27x56 ED Micro Spotting Scope
£329.99
Celestron LandScout 8x21mm Roof Binocular Celestron LandScout 8x21mm Roof Binocular
£25.00
Celestron StarSense LT127 AZ Reflector Telescope Celestron StarSense LT127 AZ Reflector Telescope
£299.99
Celestron Ultima 100 - 45 degree Spotting Scope Celestron Ultima 100 - 45 degree Spotting Scope
£429.99
DWARF 3 Smart Telescope - Deluxe Bundle DWARF 3 Smart Telescope - Deluxe Bundle
£519.00
ESSENWI 114EQ Reflector Telescope for Adult Astronomy Beginners - Comes with 3 Eyepieces, 3X Barlow Lens, Moon Filter, and More ESSENWI 114EQ Reflector Telescope for Adult Astronomy Beginners - Comes with 3 Eyepieces, 3X Barlow Lens, Moon Filter, and More
£377.07
ESSENWI 130EQ Reflector Telescope for Adults Astronomy, Professional Telescope for Adults, with 2 Plossl Eyepieces, 3X Barlow Lens, Adjustable Equatorial Mount Tripod, 2023 New ESSENWI 130EQ Reflector Telescope for Adults Astronomy, Professional Telescope for Adults, with 2 Plossl Eyepieces, 3X Barlow Lens, Adjustable Equatorial Mount Tripod, 2023 New
£417.07
National Geographic 114/900 Reflector AZ Telescope National Geographic 114/900 Reflector AZ Telescope
£189.99
Svbony MK105 Maksutov-Cassegrain Telescope OTA Svbony MK105 Maksutov-Cassegrain Telescope OTA
£279.99
Svbony SV198 Mini 50mm Guiding Scope Svbony SV198 Mini 50mm Guiding Scope
£149.99
Svbony SV223 Diagonal 90-degree 2 inch Clicklock Svbony SV223 Diagonal 90-degree 2 inch Clicklock
£149.99
Svbony SV48P Telescope 90mm F5.5 Refractor OTA Svbony SV48P Telescope 90mm F5.5 Refractor OTA
£289.99
Svbony SV503 Astronomical Telescope 102mm F7 Svbony SV503 Astronomical Telescope 102mm F7
£597.99
Svbony SV503 Telescope ED 70mm F6 Extra Low Dispersion Refractor OTA Svbony SV503 Telescope ED 70mm F6 Extra Low Dispersion Refractor OTA
£379.99
Svbony SV503 Telescope ED 80mm F7 Doublet Refractor OTA Svbony SV503 Telescope ED 80mm F7 Doublet Refractor OTA
£429.99
Svbony SV550 APO Refractor Telescope Apochromatic Triplet 122mm F7 Svbony SV550 APO Refractor Telescope Apochromatic Triplet 122mm F7
£1,699.99
Svbony SV550 APO Triplet Refractor 80mm F6 Telescope OTA Svbony SV550 APO Triplet Refractor 80mm F6 Telescope OTA
£799.00
Telescope for Adults Astronomy 700 x 90 mm AZ Astronomical Professional Refractor Telescope for Kids Beginners with Advanced Eyepieces, Tripod, Wireless Remote, White Telescope for Adults Astronomy 700 x 90 mm AZ Astronomical Professional Refractor Telescope for Kids Beginners with Advanced Eyepieces, Tripod, Wireless Remote, White
£379.06
Unistellar eQuinox 2 Smart Telescope Unistellar eQuinox 2 Smart Telescope
£2,199.00
Unistellar eVscope 2 Smart Telescope with 7.7Mpixel Electronic Eyepiece by Nikon Unistellar eVscope 2 Smart Telescope with 7.7Mpixel Electronic Eyepiece by Nikon
£3,999.00
Unistellar Odyssey PRO Smart Telescope Unistellar Odyssey PRO Smart Telescope
£3,499.00
Unistellar Odyssey Smart Telescope Unistellar Odyssey Smart Telescope
£2,199.00
Unistellar Smart Solar Filter Unistellar Smart Solar Filter
£219.00
Visual Accessories Bundle for Altair 60mm to 80mm Refractor Telescopes Visual Accessories Bundle for Altair 60mm to 80mm Refractor Telescopes
£125.00
ZWO SeeStar S50 All-in-One Smart APO Refractor Telescope ZWO SeeStar S50 All-in-One Smart APO Refractor Telescope
£539.00

Related Products

3 visitors right now
3 visitors have this item in their cart right now
3 people have bought this item
3 % of people buy 2 or more

Recently viewed products