🎄 Year-end news: operations are slowed down until January 5, 2026! Happy New Year to all! 

More products from the brand :ASKAR

Backfocus adjustment ring with integrated +/2 mm adjustment

CHF 139

Reference BAG-0001

Free delivery
Easy, free returns

Introducing the ASKAR ±2 mm backfocus adjuster

ASKAR has developed a backfocus adjuster specially designed to solve backfocus distance problems. This adjuster makes it easy to correct backfocus variations without having to replace or modify expensive components. Thanks to its ingenious design, it enables fine, precise adjustment, with an adjustment range of ±2 mm, which is ideal for compensating for small variations and ensuring perfect focus.

Technical description and features

  • Two versions are available: ASKAR offers two specifications for this backfocus adjuster, one with a camera-side adapter in M54 and the other in M48. This allows users to choose the version best suited to their equipment.
  • Dimensions : The adjuster is 18 mm thick (±2 mm adjustment), offering sufficient stability and robustness for outdoor use. The outside diameter is 74 mm, and it is available with female threads for the telescope interface (M54 or M48) and male threads for the camera interface.
  • CNC precision and printed scale : Manufactured with CNC precision, each adjuster enables backfocus correction to an accuracy of 0.05 mm. What's more, the scale printed on the surface of the adjuster facilitates adjustment and enables the chosen position to be retained. This is particularly useful for users who frequently change equipment.
  • Easy to use : The ASKAR backfocus adjuster is easily attached between telescope and camera. Simply turn the adjuster to adjust the backfocus distance, allowing rapid adaptation to variations. The two screw holes ensure that the adjuster stays in place once the ideal position has been found.

In a nutshell

The ASKAR backfocus adjuster is a practical and effective solution for astrophotographers looking to optimize their focus without complications. Its sturdy design, easy-to-read scale and precise adjustment capability make it an ideal choice for amateurs and professional astronomers alike. This accessory guarantees that your images will always be perfectly sharp, even with a variety of equipment configurations.

Products in the same category

Explore Scientific 2" 52° - 3 mm
Explore Scientific 2" 52° - 3 mm
CHF 89
Poignée de transport pour SQA
Carrying handle for SQA
CHF 99
Rotateur 2" ARCO
2" ARCO rotator
CHF 689
Explore Scientific 2" 52° - 6.5 mm
Explore Scientific 2" 52° - 6.5 mm
CHF 89
Ultimate Powerbox V3
Ultimate Powerbox V3
CHF 559
Réducteur 0.8x et correcteur de champ pour Lunt LS80MT, LS100MT et LS130MT
0.8x reducer and field corrector for Lunt LS80MT, LS100MT and LS130MT
CHF 599
Explore Scientific 2" 68° - 40 mm
Explore Scientific 2" 68° - 40 mm
CHF 399
Diviseur optique ToupTek OAG XL
ToupTek OAG XL optical splitter
CHF 139
Explore Scientific 2" 100° - 25mm
Explore Scientific 2" 100° - 25mm
CHF 899
Tiroir à filtres pour objectifs Nikon/Canon
Filter drawer for Nikon/Canon lenses
CHF 105
Explore Scientific 2" 100° - 5.5mm
Explore Scientific 2" 100° - 5.5mm
CHF 369
Explore Scientific 2" 100° - 9mm
Explore Scientific 2" 100° - 9mm
CHF 399
Oculaire Celestron Luminos 82° 7mm
Celestron Luminos 82° 7mm eyepiece
CHF 199
Réducteur de focale .7x C9.25 EdgeHD
.7x C9.25 EdgeHD focal reducer
CHF 559
Explore Scientific 2" 120° - 9mm
Explore Scientific 2" 120° - 9mm
CHF 1'099
Adaptateur M54/M48 pour Canon R (backfocus de 35mm)
M54/M48 adapter for Canon R (35mm backfocus)
CHF 59

Our new products

WandererBox Pro V3
WandererBox Pro V3
CHF 379
Caméra planétaire Player One Mars-C II (IMX662 couleur)
Player One Mars-C II planetary camera (IMX662 color)
Original price was: CHF 199.Current price is: CHF 149.
Caméra ToupTek G3662M (IMX662 mono BSI)
ToupTek G3662M camera (IMX662 mono BSI)
CHF 169
Caméra ToupTek G3M2210M (Capteur SC2210 mono)
ToupTek G3M2210M camera (SC2210 mono sensor)
CHF 229
Caméra ToupTek GPCMOS02000KPA (IMX290 couleur)
ToupTek GPCMOS02000KPA camera (IMX290 color)
CHF 109
Acuter MaksyGo 60 – Mini Dobson Maksutov-Cassegrain
Acuter MaksyGo 60 - Mini Dobson Maksutov-Cassegrain
CHF 119
Offrez une carte cadeau !
Give a gift card!
Price range: CHF 50 through CHF 1'000
Celestron Origin Mark II
Celestron Origin Mark II
CHF 3'999
Trépied en carbone iOptron charge lourde 40mm Ver.A
iOptron heavy-duty carbon tripod 40mm Ver.A
CHF 299
iOptron SkyGuider Pro
iOptron SkyGuider Pro
CHF 299
[category_menu_mobile]