Reference: TSVM6815

Brand: TSOptics

Extension ring M68x1 15mm - TSOPTICS

Short extension ring with M68 threads on both sides for exact adjustment of the distance

Reference: AS-BF-ADM54M54

Brand: ASKAR - Sharpstar

M54/M48 Backfocus Adjuster - ASKAR

In daily astronomical shooting, the backfocus will have an influence. Astronomical photographers are often frustrated by the change of backfocus due to various reasons such as refraction of filters or when using some products with sensitive backfocus. To solve this problem, ASKAR launched the backfocus adjuster, (providing the adjustment range from...

Reference: TSVM688

Brand: TSOptics

Bague Allonge M68x1 8mm - TSOPTICS

Short extension ring with M68 threads on both sides for exact adjustment of the distance

Reference: PL3600285

Brand: PrimaluceLAB

Extension Ring M81 - 25 mm for ESATTO 3" - PrimaluceLAB

The M81 25mm extension tube can be directly threaded to the ESATTO 3" draw tube and allows you to fix camera and accessories further away from the ESATTO microfocuser. This M81 extension tube has 25mm thickness, it's made up of aluminum, black anodized and it has a M81 female on the camera side this way you can connect all the ESATTO 3" camera adapters.

Reference: UA-EXTM42-10

Brand: Univers Astro

Extension ring 10mm M42

Extension ring T2 (M42) with a back focus of 10mm

Reference: UA-EXTM42-20

Brand: Univers Astro

extension gue 20mm M42

Extension ring T2 (M42) with a 20mm back focus

Reference: UA-EXTM48-30

Brand: Univers Astro

Extension ring 30mm M48

Extension ring 30mm M48

Reference: UA-EXTM42-7

Brand: Univers Astro

Extension ring 7mm M42

Extension ring T2 (M42) with a back focus of 7mm

Reference: SW0185

Brand: Sky-Watcher

1.25" 50mm extension slider

An extension tube with a 1.25" (31.75mm) barrel ideal for extending the focal length of equipment of the same barrel.

Reference: UA-EXTM48-3

Brand: ASToptics

Extension ring 3mm M48

M48 extension ring with a back focus of 3mm

Reference: UA-EXTM42-5

Brand: Univers Astro

Extension ring 5mm M42

Extension ring T2 (M42) with a back focus of 5mm

Reference: TSV235

Brand: TSOptics

Coulant d'extension 2" - Tirage 35mm

Une bague parfaite pour retrouver le focus avec certains oculaires quand le PO n'a pas assez de recul.

Reference: UA-EXTM42-15

Brand: Univers Astro

Extension ring 15mm M42

T2 (M42) extension ring with 15mm back focus

Reference: KE398

Brand: Kepler

Extension Ring 6mm M54 - KEPLER

M54 Adjustment Ring Adding 6mm of Backfocus.

Reference: KE400

Brand: Kepler

Bague allonge M54 8mm - Kepler

Reference: UA-EXTM48-7

Brand: Univers Astro

M48 extension 7mm

M48 extension ring with 7mm back focus