Extension Ring Set M48x0.75 (30, 20, 15, 10 and 5 mm)
$49.96
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Extension Ring Set M48x0.75 (30, 20, 15, 10 and 5 mm)
$49.96
5 Extension Sizes
30 20 15 10 5mm
M48x0.75 Threading
Large T2 Filter Compatibility
Anti-Vignetting Aperture
45mm Wide Inner Diameter
Anodized Aluminum
Durable Black Matt Finish
2-Inch Barrel Fit
50.65mm Outer Diameter Sizing
Lightweight Build
Total Weight Only 85g
Precision Focal AlignmentAchieve Accurate Astrophotography Sensor Spacing
The Explore Scientific Extension Ring Set M48x0.75 offers precise distance adjustment between your camera sensor and the focal plane of your telescope or field flattener. Designed specifically for serious astrophotography, this kit ensures critical backfocus positioning while preserving a wide light path to prevent sensor vignetting.
Versatile M48 Optics AdapterHigh Quality Construction for Precision Imaging
Crafted from durable black matt anodized aluminum, the Explore Scientific Extension Ring Set M48x0.75 features five separate ring lengths (30mm, 20mm, 15mm, 10mm, and 5mm) equipped with standardized internal and external M48x0.75 threads. This flexible set integrates seamlessly with 2-inch eyepiece adapters, camera-specific bayonet mounts, and 2.0-inch color or nebula filters. Featuring a generous 45.0 mm clear inner aperture to avoid edge shadows on large optical sensors, this adapter kit is an essential tool for perfecting your telescope imaging setup.
Technical SpecificationsDimensions and Thread Details
Included Tube Sizes
30mm, 20mm, 15mm, 10mm, 5mm
Thread Type
Internal and External M48x0.75 mm (Large T2) (gear)
Inner Diameter
45.0 mm
Outer Diameter
50.65 mm
Material
Black Matt Anodized Aluminum
Total Weight
85 g
Eyepiece Adapter Compatibility
Standard 2.0 inch
Key Features and HighlightsEngineered for Superior Camera Performance
Extension Sleeve Range5 distinct pieces from 5mm to 30mm
Anti-Vignetting DesignLarge 45.0 mm clear inner aperture
Universal Barrel Fit50.65 mm outer diameter fits 2-inch adapters
Standard Photo ThreadsInternal and external M48x0.75 mm connections
Filter CompatibilityWorks with standard 2.0-inch color and nebula filters
Anodized FinishDurable black matt anodized aluminum construction
Ultra-LightweightComplete set total weight of only 85 grams
Frequently Asked QuestionsEverything you need to know
What extension tube lengths are included in the Explore Scientific Extension Ring Set M48x0.75?
The Explore Scientific Extension Ring Set M48x0.75 includes five individual extension sleeves measuring 30mm, 20mm, 15mm, 10mm, and 5mm in length.
Will the Explore Scientific Extension Ring Set M48x0.75 cause vignetting on my camera sensor?
No, the Explore Scientific Extension Ring Set M48x0.75 features a wide 45.0 mm clear inner diameter designed specifically to prevent sensor vignetting.
What thread pitch does the Explore Scientific Extension Ring Set M48x0.75 use?
The set uses standard M48x0.75 mm internal and external threads, also known as large T2 photo threads or 2.0-inch filter threads.
Can the Explore Scientific Extension Ring Set M48x0.75 fit into a 2-inch telescope eyepiece holder?
Yes, with an outer diameter of 50.65 mm, the Explore Scientific Extension Ring Set M48x0.75 fits directly into standard 2-inch eyepiece adapters.