Barlow lens & moon filter, which are indispensable for astronomical telescopes, improve the working efficiency of eyepieces and expand the eyepiece magnification of 1.25-inch telescope to 2.5 times. | 5x Barlow lens has a magnification of 2.5 times in the actual measurement. | Works with telescopes from Celestron, Skywatcher, Mead, Orion, and most brands. | Universal M42 thread connection, you can also connect an SLR camera. Connect one end to the T-ring, then the SLR, and finally the entire assembly to the astronomical telescope to begin photography. | Both the 5x Barlow lens and Moon Filter frame are processed by precision CNC. The anti-rust surface treatment is suitable for long-term use.

For phone width range： 55～85 mm(2.16"～3.35"). Fit iPhone X/8/8 Plus/7/7 Plus/6/6s/6 Plus/5/5s - Fit Samsung Galaxy S9/S8/S7/S6/S6/S5 Note 9/8/7/6/5 - Fit Sony, LG, HTC, and other brands. | With this universal smartphone telescope adapter, you can connect your phone to a telescope or microscope to take images of the moon and cells, or to a spotting scope to take images of birds and other objects. | Smartphone mount compliable with microscope, telescope, binoculars, monocular, night vision spotting scope. Fit eyepiece diameter 22mm～ 44mm(0.86"-1.73"). | Optimized weight, lighter and reduce the pressure on the telescope eyepiece, weight: 75 g / 2.65 oz.The body is made of high-strength PA plastic. The surface of the mobile phone and eyepiece has a soft EVA pad to avoid scratching and damage. | Warranty service:If you have questions about installation and not using, please contact us in time, we will reply and deal with your problems as soon as possible.

Variable extendable telescope camera adapter with a T2-Ring attaches to SLR and DSLR camera bodies. Fits all Nikon SLR / DSLR : D1, D2, D3, D3S, D3X, D35, D4, D40, D40X, D50, D60, D70, D80, D90, D100, D200, D300, D300S, D600, D700, D750, D800, D800E, D810, D3000, D3100, D3200, D5000, D5100, D5200, D7000, D7100, etc.(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. | 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 contact us by mail and we will solve your problem in time.(Choose: Full-Frame mirrorless camera adapter. Search its ASIN:B08LZ4LY7W)

The extension tube kit is used to obtain the correct image focal length or exact spacing required, thereby solving the spacing problem in astrophotography. It has an outer diameter of 2 inches and can be connected directly to the 2-inch telescope port.Length: 5mm; 7mm; 15mm; 20mm; 30mm | The M48x0.75 threads on both ends make it versatile. External thread M48 * 0.75; internal thread M48 * 0.75; a series of focusing problems are eliminated. | The required spacing can be achieved by combining several extenders of differing lengths;you can use 1 piece;2 pieces;3 pieces ;4 pieces;5 pieces of the extension rings as you like. | By combining multiple extenders of different lengths, you get the right focal length to focus with the camera or eyepiece. | All metal construction and anodizing aluminium process;durable for long time use.

Used to connect Sony NEX cameras with 1.25-inch interface telescopes, suitable for Sony NEX-3 NEX-5 NEX-6 NEX-7 5R VG40 A7R II A6300 A6000 etc. | Aluminum alloy with T2 ring and M42 - 1.25" T adapter. | Focus on the camera's LCD and operate the captured image only in manual focus mode. | After installing this adapter, you must use the NEX camera's "shoot without lens" setting to focus, and you can also use the MF assist function to focus. | The inner ring can be rotated by a standard Allen key ( Allen key is provided) to ensure that the lens always faces up correctly.

The extension tube kit is used to obtain the correct image focal length or exact spacing required, thereby solving the spacing problem in astrophotography. It has an outer diameter of 2 inches and can be connected directly to the 2-inch telescope port. | The required spacing can be achieved by combining several extenders of differing lengths;you can use 1 piece;2 pieces;3 pieces ;4 pieces;5 pieces;6 pieces;7 pieces of the extension rings as you like. | The M48x0.75 threads on both ends make it versatile. External thread M48 * 0.75; internal thread M48 * 0.75; a series of focusing problems are eliminated. | By combining multiple extenders of different lengths, you get the right focal length to focus with the camera or eyepiece. | All metal construction and anodizing aluminium process;durable for long time use.

The extension tube kit is used to obtain the correct image focal length or exact spacing required, thereby solving the spacing problem in astrophotography. It has an outer diameter of 2 inches and can be connected directly to the 2-inch telescope port. | The required spacing can be achieved by combining several extenders of differing lengths;you can use 1 piece;2 pieces;3 pieces ;4 pieces;5 pieces of the extension rings as you like. | The M48x0.75 threads on both ends make it versatile. External thread M48 * 0.75; internal thread M48 * 0.75; a series of focusing problems are eliminated. | By combining multiple extenders of different lengths, you get the right focal length to focus with the camera or eyepiece. | All metal construction and anodizing aluminium process;durable for long time use.

Extension tube kit is used to obtain the correct image focal length or exact spacing required, thereby solving the spacing problem in astrophotography. This set adds 55mm to the original 3mm 5mm 7mm 15mm 20mm 30mm. An upgraded package of 7 Extension Tubes.(Tips: The inner side of the added 55mm has no thread for eliminating reflection. The connection port thread at both ends is M42x0.75.) | The required spacing can be achieved by combining several extenders of differing lengths;you can use 1 piece;2 pieces;3 pieces ;4 pieces;5 pieces;6 pieces; 7 pieces of the extension rings as you like. | The M42x0.75 threads on both ends make it versatile. External thread M42 * 0.75; internal thread M42 * 0.75; a series of focusing problems are eliminated. | By combining multiple extenders of different lengths, you get the right focal length to focus with the camera or eyepiece. | All metal construction and anodizing aluminium process;durable for long time use.

Extension tube kit is used to obtain the correct image focal length or exact spacing required, thereby solving the spacing problem in astrophotography. This set includes 5mm; 5mm; 5mm; 7mm; 7mm; 7mm;15mm; 15mm; 15mm. An upgraded package of 9 Extension Tubes.(Tips: The inner side of the tubes have thread for eliminating reflection. The connection port thread at both ends is M42x0.75.) | The required spacing can be achieved by combining several extenders of differing lengths;you can use 1 piece;2 pieces;3 pieces ;4 pieces;5 pieces;6 pieces; 7 pieces of the extension rings as you like. | The M42x0.75 threads on both ends make it versatile. External thread M42 * 0.75; internal thread M42 * 0.75; a series of focusing problems are eliminated. | By combining multiple extenders of different lengths, you get the right focal length to focus with the camera or eyepiece. | All metal construction and anodizing aluminium process;durable for long time use.