More products from the brand :ASKAR

Gearbox 0.7x FRA600

CHF 399

Reference CORR-0013

Disponible en stock chez le fournisseur

Free delivery
Easy, free returns

Askar 3" F3.9 0.7x Reducer for FRA600 - Optimize your Astrophotography

Visit Askar reducer 3 inches F3.9 0.7x is designed specifically for the FRA600 astrograph, optimizing its capabilities for astrophotography and visual observation. Featuring a 4-element optical design, this reducer reduces the focal ratio and increases the field of view, meeting the needs of astrophotographers looking for increased brightness and speed when capturing large-scale celestial objects. This model is compatible with full-frame sensors, ensuring full image coverage without vignetting.

Askar 3-inch F3.9 0.7x gearbox specifications

  • Focal ratio reduction : The 0.7x reduction factor enables the focal ratio of the astrograph to be changed from f/5.6 to f/3.9, increasing brightness for shorter exposure times.
  • Reduced focal length : The focal length is reduced to 420 mm, ideal for deep-sky shots and the observation of large stellar fields.
  • Lens design : 4-element system optimized for sharp, aberration-free images, maximizing the quality of every shot.
  • Back focus : The rear focal length is an industry-standard 55 mm, ensuring compatibility with a wide range of astrophotography accessories.
  • Full-frame compatibility : Designed to work perfectly with full-frame sensors, eliminating vignetting and guaranteeing uniform image quality.

Dimensions and Technical Design

  • Outside diameter : 84 mm, offering a stable, solid structure for use with large equipment.
  • Total length : 76 mm, for compact mounting without cluttering the configuration.
  • Front thread : M90*1 female, for secure connection to the FRA600 astrograph.
  • Rear thread : M48*0.75, suitable for 2" filters for extended astrophotography possibilities and easy filter installation.

Benefits for users

This reducer is ideal for users looking to optimize their FRA600 astrograph for deep-sky astrophotography. Reduced exposure time and increased field of view enable faster, more effective capture of celestial objects. The integrated M48*0.75 thread facilitates the addition of 2" filters, making this reducer versatile for a variety of astronomical applications.

Products in the same category

FocusCube C6, C8, C9.25 Edge et RASA 8
FocusCube C6, C8, C9.25 Edge and RASA 8
CHF 239
Réducteur 0.76x 80PHQ
Reducer 0.76x 80PHQ
CHF 239
Explore Scientific 2" 92° - 17mm
Explore Scientific 2" 92° - 17mm
CHF 549
Roue à filtre Indigo 7 positions 2"
7-position 2" Indigo filter wheel
CHF 459
Réducteur de focale .7x pour C8 EdgeHD
.7x focal reducer for C8 EdgeHD
CHF 479
Oculaire Morpheus 76° 14mm
Morpheus 76° 14mm eyepiece
CHF 289
Colliers Primaluce 115mm PLUS
Primaluce 115mm PLUS clamps
CHF 269
Réducteur 0.7x FRA600
Gearbox 0.7x FRA600
CHF 409
Alimentation 12V 10A - Connecteur DC 2.5mm
12V 10A power supply - DC 2.5mm connector
CHF 99
Kit de mise au point automatique pour SQA55
Autofocus kit for SQA55
CHF 79
Écran à flat GIOTTO  + moteur ALTO  285
GIOTTO flat screen + ALTO 285 motor
CHF 1'269
Résistance chauffante pour Ø 180mm
Heating element for Ø 180mm
CHF 99
Écran à flat GIOTTO 220
GIOTTO 220 flat screen
CHF 439
SESTO SENSO 2
SESTO SENSO 2
CHF 269
Platine Vixen et Losmandy BIG
Platinum Vixen and Losmandy BIG
CHF 349
Oculaires Baader Morpheus 76° - Kit 6 pièces (1,25")
Baader Morpheus 76° eyepieces - 6-piece kit (1.25")
CHF 1'499

Our new products

Wanderer ETA M54 — Correcteur de tilt électronique ultra-fin
Wanderer ETA M54 — Correcteur de tilt électronique ultra-fin
CHF 729
Wanderer Eclipse — Capot motorisé ultra-léger
Wanderer Eclipse — Capot motorisé ultra-léger
Price range: CHF 199 through CHF 329
WandererCover V4 Pro-EC — Panneau à flats motorisé pour télescopes grand diamètre
WandererCover V4 Pro-EC — Panneau à flats motorisé pour télescopes grand diamètre
Price range: CHF 469 through CHF 639
Wanderer Astro - Panneau à flats motorisé WandererCover V4-EC IR
Wanderer Astro - Panneau à flats motorisé WandererCover V4-EC IR
Price range: CHF 319 through CHF 779
Wanderer Astro - Panneau à flats motorisé WandererCover V4-EC
Wanderer Astro - Panneau à flats motorisé WandererCover V4-EC
Price range: CHF 299 through CHF 779
Wanderer Astro - WandererRotator
Wanderer Astro - WandererRotator
Price range: CHF 379 through CHF 779
Player One Uranus-M
Player One Uranus-M
CHF 389
Celestron StarSense Explorer 130DX
Celestron StarSense Explorer 130DX
CHF 459
Celestron NexStar 6SE
Celestron NexStar 6SE
CHF 1'189
Monture Avalon M-Zero HQ Bluetooth avec trépied
Monture Avalon M-Zero HQ Bluetooth avec trépied
CHF 4'099
[category_menu_mobile]