Optical Accessories

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Optical Accessories

Everything you need of optics for visual and photographic work or accessories for DIY projects, can be found in these categories.

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This is the filter for imaging in moonlight or light pollution with a colour CMOS camera - or even in dark-sky conditions if you want total isolation and control over your channels, narrowband-style.

Altair DualBand 6nm ULTRA Filter Features:

  • Capture two main emission nebulae bands at the same time, per filter, whilst suppressing light pollution, moonlight, and airglow.
  • Acquire more data in less time, opening up your imaging window, even into the summer months when it isn't quite dark.
  • If you have the 6nm Sii Oiii Ultra filter and the Ha Oiii filter combo, you can capture twice the Oiii data in each imaging session and combine them for true SHO Hubble style imaging with a colour camera!
  • Extremely steep bandpass yields maximum contrast in extreme light pollution: 6nm FHWM centred on 500.7nm Oiii wavelength, 5.5nm FHWM centred on the Sii and Ha wavelengths.
  • Can be used with One Shot Colour (OSC) CMOS or mono astronomical cameras for luminance data.
  • Includes UVIR blocking for both modified and un-modified DSLR cameras, plus an anti-reflection coating for the ultimate in contrast.
  • Best performance at focal ratios at F4.8 or slower, however can be used as fast as F3.6, with minimal contrast impact (conservative estimate - faster may be possible). Like any dichroic filter, contrast increases as focal ratio number increases. More info about light pollution filter performance and focal ratio here.
  • Available in 1.25" or 2" standard astronomy filter sizes. The filters have standard Astronomy compatible filter threads, and fit inside the Altair Magnetic Filter holders (with appropriate slider), and standard astronomy filter wheels. Choose the 2" version for use with the Altair Canon / Nikon DSLR lens to astro CMOS adaptors. For Hypercam 183C and 533C or 533M, 585C and smaller sensors choose the 1.25" filter. For larger sensors choose the 2" version.
619.00 € 599.00 €
Estimated delivery time : 1-2 weeks
 
 
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-reflection AR coating to suppress halos around bright stars.
558.00 € 502.20 €
Estimated delivery time : 1-2 weeks
 
 
The 1.25 "UltraFlat Field Eyepiece features a high quality standard and a very compact design, which is designed to remove the field curvature at the edge, resulting in a flat, distortion-free image up to the edge of the visible field of view.
119.00 € 95.20 €
Estimated delivery time : 1-2 days
 
 
Our new APM-Riccardi Apo-Reducer with reducing factor 0.75 x with M63 thread on both sides.
495.00 € 445.00 €
Estimated delivery time : 1-2 days
 
 

FMA180 pro is a compact astrograph for astrophotography with more integrated functions and a more dedicated design.

  • Two ED glasses apochromat with built-in corrector
  • 180 mm focal length
  • 40 mm aperture gather enough light for a fast system
  • 44 mm image circle supports full frame sensors
  • 360° rotator allows easy image composition
  • Internal focusing for high stability
  • M48 camera conection with 55 mm back focus
  • Mounting with Vixen style dovetail plate or finder base bracket
  • Comes with finder shoe
  • Only 0.8 kg weight
  • OAG, cameras and mount are for demonstration purposes and are not included.
699.00 €
Estimated delivery time : 1-4 days
 
 

Eyepiece set with all seven Hyperion focal lengths (5, 10, 17, 24 mm), incl. Eyepiece case.

  • This eyepiece set includes all the focal lengths you ever will need for observing or eyepiece projection.
  • Comfortable eye relief of 20 mm - through rubber eyecup also perfect for spectacle wearers.
  • Phantom Group Coating in ZEISS quality for absolute absence of reflections and maximum contrast.
  • Excellent sharpness to the edge even with fast telescopes and spotting scopes through optimized 8-element design.
  • 1.25" and 2" barrel size with filter threads.
  • Variation of the magnification possible by using fine tuning rings.
  • Camera thread at the top side for connecting DSLR and mirrorless system cameras for eyepiece projection.
  • Eyepiece case for save transport included
635.00 €
Estimated delivery time : 1-4 days
 
 
8x50 Viewfinder with errect Image and Illumination by Explore Scientific.
159.00 €
Estimated delivery time : 1-2 days
 
 
The visual effect of these new 4,5mm 82° LER eyepieces with their long eye-relief and their 82° apparent field is truly a full-immersion experience.  
189.00 € 151.20 €
Estimated delivery time : 1-2 days
 
 
The Nagler Type 7 series was developed as a natural extension of our highly regarded, 85°, limited edition Apollo 11 eyepiece. However, the series can also be thought of as an extension of the long eye relief Nagler Type 4 concept. With the all-new Type 7 design layout, we achieved our goal of Apollo 11-like performance across a series of focal lengths that are eyeglass friendly.
Call for pricing
Estimated delivery time : 3 months
 
 
High quality 8 mm Plössl eyepiece for planetary observation.
161.00 €
Estimated delivery time : 1-4 days
 
 

Focal length reducer for VSD90ss and VSD70ss with two ED lenses for high-end astrophotography and an illumination of 44 mm for full-frame cameras

  • Elaborately designed focal length reducer for the VSD90ss/VSD70ss
  • Suitable for a 24x36 full format camera
  • Four lens elements in four groups for exceptionally sharp star images
  • Guarantees a large illumination of the image field up to 44 mm
  • Very sharp stars up to the edge of the field of view
  • The VSD90ss thus allows extremely short exposure times
  • High-quality standard ‘Made in Japan’
  • Reduces the focal ratio of the VSD90ss from f5.5 to f3.9
  • Dimensions: 92 mm diameter x 59.2 mm length / Weight: 589 g
1249.00 €
Estimated delivery time : 3-4 weeks
 
 

This filter was developed to suppress light pollution for colour and monochrome cameras and offers more balanced RGB colours.

  • ltair TRI-RGB is great for broadband objects such as mixed emission / reflection nebulae, comets, dust clouds and galaxies, but it also allows the major emission nebulae lines through. It covers both broadband AND narrowband targets.
  • TRI-RGB complements the Altair TriBand and DualBand filters by adding star colours.
  • TRI-RGB and works with fast or slow focal ratio telescopes and camera lenses. 
  • TRI-RGB is not only for light pollution control. It works very well under dark skies too by enhancing colour purity, airglow and reducing channel crossover in colour CMOS and DSLR cameras.
  • Although primarily intended for colour cameras, TRI-RGB can be used for a cleaner luminance channel with a mono camera. 
  • High transmission peaks with steep sides enhance contrast, together with almost total suppression of unwanted light, at OD4/5 (0.01%~0.001%) over the majority of unwanted visual wavelengths.
279.00 € 259.00 €
Estimated delivery time : 1-2 weeks