William Optics Apochromatic refractor AP 51/250 RedCat WIFD OTA (82930)
773.12 £
Tax included
The AP 51/250 is a remarkable optic that combines compact size, affordability, and outstanding optical quality—perfect for astrophotographers and nature photographers alike. At its core is a Petzval optical design, featuring four elements in three groups, made from high-grade FPL53 and FPL51 glass. This results in a color-true, well-corrected image circle over 44mm in diameter—making it ideal for full-frame cameras! Its fast f/4.9 aperture enables short exposure times.
William Optics Apochromatic refractor AP 91/448 BlackCat 91 WIFD OTA (85223)
2461.7 £
Tax included
The AP 91/448 is an outstanding optical instrument that combines a compact form, attractive price, and excellent optical performance—perfect for both astrophotographers and nature photographers. Its heart is a Petzval design featuring four elements in three groups, made from premium FPL53 and FPL51 glass. This configuration produces a color-accurate, well-corrected image field with a diameter of over 55mm, making it ideal for full-frame cameras. Its fast f/4.9 aperture enables short exposure times.
William Optics Apochromatic refractor AP 91/448 RedCat 91 WIFD OTA (85222)
2461.7 £
Tax included
The AP 91/448 is a remarkable optical instrument, blending compact size, competitive price, and exceptional image quality—ideal for both astrophotographers and nature photographers. At its core is a Petzval optical design with four elements in three groups, utilizing premium FPL53 and FPL51 glass. This setup provides a color-accurate, well-corrected image circle over 55mm in diameter, perfect for full-frame cameras. The fast f/4.9 aperture enables short exposure times for sharp, detailed images.
William Optics Apochromatic refractor AP 132/925 Fluorostar Gold OTA (65801)
3770.02 £
Tax included
The Fluorostar features a triplet objective lens design with air gaps, crafted from premium FPL-53 ED glass by Ohara, Japan, combined with lanthanum elements. This exceptional construction guarantees outstanding color fidelity and crystal-clear images—making the Fluorostar a truly high-end instrument. Pair this apochromat with a high-quality William Optics star diagonal, and you’ll experience stellar views rarely matched by other telescopes. 
Astronomik OIII 12nm CCD MaxFR Clip-Filters Sony alpha 7 (67056)
315 £
Tax included
The MaxFR series of filters are specifically optimized for astrophotography with very fast telescopes, such as the Celestron RASA telescopes or Takahashi's Epsilon astrographs. These filters are designed to enhance imaging by targeting the three critical emission lines: OIII, H-alpha, and SII. They are available with a full width at half maximum (FWHM) of either 12nm or 6nm, catering to different imaging needs.
William Optics Apochromatic refractor AP 132/925 FluoroStar Red OTA (75400)
3976.6 £
Tax included
The FluoroStar features a premium objective lens made up of three air-spaced elements, including special FPL-53 ED glass from Ohara, Japan, and lanthanum glass. This advanced triplet design ensures exceptional color correction and crystal-clear views, making this telescope a true high-end instrument for demanding astronomers. Pair this apochromatic refractor with a top-quality diagonal from William Optics and you’ll enjoy star views of remarkable sharpness rarely matched by other telescopes. 
Astronomik Filters H-alpha 12nm CCD MaxFR 31mm (67095)
160.66 £
Tax included
The MaxFR series of filters are designed for astrophotography with very fast telescopes, such as the Celestron RASA telescopes or Takahashi's Epsilon astrographs. They are optimized to capture the three essential emission lines: OIII, H-alpha, and SII. These filters are available with a full width at half maximum (FWHM) of either 12nm or 6nm, ensuring high performance for different imaging requirements.