Reviews Eyepiece Extension Tubes

SVBONY SV112 Telescope Camera Adapter Kit for Canon EOS Rebel SLR DSLR Prime Focus and 1.25 inches Variable Projection Eyepiece Astrophotography

the projected image size increases with distance.
Fits telescopes with a standard 1.25" eyepiece port.
the adapter can hold eyepieces up to 42mm in upper body diameter.
it also features a laser engraved extension scale for recordability and repeatability as well as a large machined grip ring.
for a sure grip in even the worst dew conditions.
The variable feature lets you adjust the adapter length to vary the magnification (thus image size) for perfect framing of your shots.
fits telescopes with a standard 1.25" eyepiece port.the 1.25" barrel is threaded to accept standard 1.25" eyepiece filters.

5x barlow lens of any 1.25" eyepiece of astronomy telescope.
without adding a long extension tube between the telescope and eyepiece.
5 times magnifying power of an existing eyepiece at the cost of a single eyepiece..
The apochromatic barlow lens’s fully multi coated optics offers high definition view and a closer detailed look at the moon's surface and other objects..
Interface with M42x0.75 Thread: With T/T2 (M42x0.75mm) male thread for T/T2 connectors, work as a t adapter. Connect DSLR or SLR camera to telescope easily via a separate sale t ring adapter. (Adapter not included).
Quality Made: Aluminum stock and black anodized body, precision machined.
Dust Cap Included: Keeps lens clear easily with 2 dust covers. With safety undercut and brass compression ring, ensure the eyepiece barrels will not be marred by the captive set screw..

【Designed for Sony E-Mount】 Compatible with Sony E-mount APS-C and full-frame cameras, as well as original or third-party Sony E-mount lenses.and....
【Budget-Friendly Solution】 The extension tubes allow your lens to get a focus closer than its minimum focusing distance, thus giving you larger....
【Shoot with Autofocus】 The extension tubes equipped with electronic contacts can transfer data between the camera and the lens, so you can still....
【Easy Installation & Removal】 Install the extension tubes between the camera body and the lens. Installation and removal of the extension tubes....
【Lightweight & Portable】 Merely 1.5oz (42g) when stacked together, the extension tubes barely add any weight to your camera. With a diameter of....

Total magnification: 40X-100X-250X-400X-1000X-2500X.
Objectives: achromatic DIN 4X, 10X, 40X (S), 100X (S, Oil).
Viewing head: 45 degrees inclined 360 degrees swiveling trinocular.
Interpupillary distance: sliding adjustable 2-3/16inch ~ 2-15/16inch (55mm ~ 75mm).
Diopter: adjustable on both eyepiece tubes.
Stage: mechanical stain-resistant double layer, size: 5-1/2inch x 5-1/2inch (140mm x 140mm), translation range: 3inch x 2inch (....

Total magnification: 40X-100X-250X-400X-1000X-2500X.
Objectives: achromatic DIN 4X, 10X, 40X (S), 100X (S, Oil).
Viewing head: 45 degrees inclined 360 degrees swiveling trinocular.
Interpupillary distance: sliding adjustable 2-3/16inch ~ 2-15/16inch (55mm ~ 75mm).
Diopter: adjustable on both eyepiece tubes.
Stage: mechanical stain-resistant double layer, size: 5-1/2inch x 5-1/2inch (140mm x 140mm), translation range: 3inch x 2inch (....

Extension tube provides extra focuser "back travel" often needed for short-range terrestrial viewing through a telescope, or for astrophotographic applications.
Adds 2" of extension, fits in 2" telescope focusers, and accepts 2" eyepieces or accessories.
Features two locking thumbscrews to secure any inserted astronomy accessory.
Threaded for use with 2" Orion eyepiece and astrophotography filters.

Includes: 16 ft intake hose with five rigid extension tubes, 8 ft discharge hose, 13 ft power cord, five nozzle attachments, discharge net, and a convenient rack to store and organize accessories..
Dual-chamber Vacuum System: Two cylinders alternate suction and drain cycle to provide continuous suction..
Sludge Drain with Drain Hose: Dual-discharge option for draining waste water directly into flower bed or attach debris bag and place into pond to “recycle” pond water during coarse debris removal. Use Drain Cap during wet-vac operation..
Aluminum Extension Tubes: Lightweight bend-resistant tubes..
Transparent Extension Tube: Allows easy visual inspection of debris material and to monitor operation..

Variable Extension Telescope Camera Adapter with a T2-Ring attaches to all Canon SLR and DSLR camera bodies.(Tip: Mirrorless cameras are not suitable for use).
Easy-to-use,extendable camera adapter is designed to connect the camera body and telescope together,Eyepieces can be placed inside the extension tube of adapter to increase the detail and clarity of photography..
Essential accessory for anyone interested in astrophotography. It can be used for SLR camera prime focus photography and eyepiece projection photography..
Multiple shooting methods:The eyepiece can be fixed in the front cylinder to achieve a long focal length for small objects, such as photographing the moon crater. Using adapter without eyepieces is equivalent to using the focal length of a telescope,suitable for taking pictures of the entire moon, gas nebula, etc.(Choose: Full-Frame mirrorless camera adapter. Search its ASIN:B08LYP5YST).
Extension tube can accommodate eyepieces up to 38mm (1.49 "). After connecting the eyepieces, the distance between the front and rear can be adjusted to zoom in or out to obtain a zoomable image. It is recommended to use eyepieces, which can be fixed in the barrel, so the camera can get higher quality images. If there is a problem with the use, please c....

Image sensor: Aptina 1/2.3inch color CMOS.
Resolution: 3584x2748 pixels (10M pixels).
Frame speed: 1.9fps at 3584x2748, 8fps at 1792x1374, 27fps at 896x684.
Reduction lens: 0.5X, fit to 23.2mm eyepiece tube.
0.01 mm calibration slide: 1mm/100 division.
Adapters fit 30mm and 30.5mm eyepiece tubes.
Compatible with Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10, Mac OSX, Linux.
1-year warranty against manufacturing defects.