85mm focal length, reduction factor of about 0.5X, depending on spacing. 0.5x focal reducer effectively halves the focal length of a telescope, enabling lower magnification, a wider field of view, and shorter exposure times for astrophotography. | 2 lenses for better correction - cemented together and coated, black-anodized aluminum housing. | Mounting threads - 1.25" filter thread (28.5x0.75MM) on both sides: Threads into eyepieces, camera adapters, and other accessories with standard 1.25" threads, and can be stacked with additional 1.25" threaded accessories. | Free light transmission - 22.5mm lens aperture. Can be used with additional spacers (available separately) to achieve further focal reduction. | Intended for use with with longer-focal-ratio telescopes and eyepieces of narrow to moderately-wide apparent fields of view.

Designed primarily for planetary observation (Moon, Jupiter, Mars and Saturn and more) but great for deep sky objects too. Comfortable eye relief averaging 16mm across the series. Threaded for standard 1.25- inch astronomy filters. | Wide 58- degree Field of View (FOV) in 2.5mm to 25mm focal lengths. Equipped with an eyepiece barrel which could be rotated for adjustment and a convertible rubber ring for eyes. | 1.25" fully multicoated eyepieces give maximum detail and definition across the entire 58 degree field of view. High transmittance and contrast ratio with least lateral chromatic aberration and scattering phenomenon. | Each eyepiece has 5 lens elements in 3 groups. Experienced observers will truly appreciate such generous eye relief at significant magnifications. Exceptional at nearly eliminating lateral color aberration and light scatter while retaining excellent sharpness, contrast and definition. | Obtain higher magnification with short focal length. It could bring you a better observation experience in a comfortable situation with high-contrast imaging. A cost-effective eyepiece, you will obtain more details that you have never seen before.

Designed primarily for planetary observation (Moon, Jupiter, Mars and Saturn and more) but great for deep sky objects too. Comfortable eye relief averaging 16mm across the series. Threaded for standard 1.25-inch astronomy filters. | Wide 58- degree Field of View (FOV) in 2.5mm to 25mm focal lengths. Equipped with an eyepiece barrel which could be rotated for adjustment and a convertible rubber ring for eyes. | 1.25" fully multicoated eyepieces give maximum detail and definition across the entire 58 degree field of view. High transmittance and contrast ratio with least lateral chromatic aberration and scattering phenomenon. | Each eyepiece has 5 lens elements in 3 groups. Experienced observers will truly appreciate such generous eye relief at significant magnifications. Exceptional at nearly eliminating lateral color aberration and light scatter while retaining excellent sharpness, contrast and definition. | Obtain higher magnification with short focal length. It could bring you a better observation experience in a comfortable situation with high-contrast imaging. A cost-effective eyepiece, you will obtain more details that you have never seen before.

Premium apochromatic Barlow lens with four lens design. | Simple to increase your eyepiece's magnification, no chromatic aberration. | Take high-end quality planetary photos, multi-layer, multi-coating for high contrast. | Very high-quality aluminium housing with rubber armoured grip. | Sharp, brilliant image, compression ring to protect your eyepieces.

Threaded for standard 1.25- inch astronomy filters and barlow lens. | Comes with sturdy plastic dust caps-protect the eyepiece from dust and moisture. | 1.25- inch 4mm plossl eyepiece set , gives the widest viewing field along with extra sharpness and long eye relief. | 4-element plossl design, has a approx 52 degree AFOV. Perfect for broad-field lunar observations, medium-sized star clusters, and a wide range of cloudy nebulas and deep-sky targets. | Fold-down rubber eyeguard Threaded for standard 1.25- inch astronomy filters.

A twist of the zoom eyepiece housing changes focal length from 21mm to 7mm, providing a variety of viewing magnification powers. Excellent contrast and sharpness - making the zoom also of interest for planetary observing. | Exceptionally long 16mm-to-33mm eye relief range allows eyeglass wearers to enjoy the entire view while still wearing their corrective lenses without vignetting. The Zoom eyepiece lets you change magnification power without physically changing eyepieces. | Apparent field of view is 30- degree at 21mm and 43- degree at 7mm. Rubber traction ring ensures a good grip. The 1.25" barrel is threaded for filters. Actual magnification range will depend on the focal length of your telescope. It works equally well for astronomical or terrestrial viewing. | Eyepiece consists of four elements which are fully coated with anti-reflection coatings for clear, high contrast views. The particularly large eye lens coupled with the long eye relief means the Zoom provides particularly good viewing comfort, the eyecup can folded down - handy for spectacle wearers. | Comfortable viewing at every focal length setting - superior to most fixed focal length eyepieces, especially at the shorter focal length settings, precise and stepless adjustment from 7mm to 21mm. A nice value in a quality zoom eyepiece!

Designed primarily for planetary observation (Moon, Jupiter, Mars and Saturn and more) but great for deep sky objects too. Comfortable eye relief averaging 16mm across the series. Threaded for standard 1.25-inch astronomy filters. | Wide 58- degree Field of View (FOV) in 2.5mm to 25mm focal lengths. Equipped with an eyepiece barrel which could be rotated for adjustment and a convertible rubber ring for eyes. | 1.25" fully multicoated eyepieces give maximum detail and definition across the entire 58 degree field of view. High transmittance and contrast ratio with least lateral chromatic aberration and scattering phenomenon. | Each eyepiece has 5 lens elements in 3 groups. Experienced observers will truly appreciate such generous eye relief at significant magnifications. Exceptional at nearly eliminating lateral color aberration and light scatter while retaining excellent sharpness, contrast and definition. | Obtain higher magnification with short focal length. It could bring you a better observation experience in a comfortable situation with high-contrast imaging. A cost-effective eyepiece, you will obtain more details that you have never seen before.

Threaded for standard 1.25- inch astronomy filters and barlow lens. | Comes with sturdy plastic dust caps-protect the eyepiece from dust and moisture. | 1.25- inch 8mm plossl eyepiece set , gives the widest viewing field along with extra sharpness and long eye relief. | 4-element plossl design, has a approx 52 degree AFOV. Perfect for broad-field lunar observations, medium-sized star clusters, and a wide range of cloudy nebulas and deep-sky targets. | Fold-down rubber eyeguard Threaded for standard 1.25- inch astronomy filters.

Astromania 1.25" Mars Filter is an excellent multi-purpose filter for viewing all features of Mars. Polar caps stand out prominently. Landscape features like mare and highland mountain ranges are easily separated and resolved. Polar hazes and cloud cover become visible. | Fully-coated Mars filter: An invaluable tool for any planetary viewer with an interest in the red planet, increases contrast to bring out subtle details on the disc of the red planet. | It's thread into the barrels of virtually any 1.25" telescope eyepiece, the threads on both sides of the filter make it also possible to combine different filters. | High-performance observational eyepiece filter helps reveal feature details of Mars easily in any telescope, you'll see polar ice cap detail, subtle mare shadings, duststorm and cloud activity when using the Mars filter on a clear, dark evening. | The filter mount is precision manufactured from metal and is extremely thin to minimise shadowing and diffraction. Machined of high quality aluminum and anodized black, durable for long time use.

1.25- inch Moon and Skyglow Filter is Skyglow is a multi-bandpass filter transmitting a high percentage of light in the visual spectrum. | The Skyglow filter absorbs more light at longer wavelengths and therefore increases viewing contrast. | Reduces Glare and improves definition so you can see the moons features much more clearly. | A high quality eyepiece filter for reducing the brightness of the moon and improving contrast and surfacr detail. | This can be useful when viewing the sky in areas where there is alot of light pollution.

Fits 2" eyepieces that have a standard 2" filter thread. | Polarizing Filters are made from renowned Schott-Hoya optical glass and allow for maximum contrast of lunar detail. | Individually precision ground, highly polished with maximum light transmission coatings on both sides, these filters are 100% guaranteed for life. | This filter is recommended for observation under urban city illumination. | 2" Variable Polarizing Filter is the all-phase lunar filter for large telescopes.

Nebula filter for increasing contrast, also suitable for use with smaller telescopes. | Many objects only first become visible at all when using an UHC filter. But also, highlights such as the Orion, Lagoon or Swan nebulae, show a whole new side to them. | Can be used at both light-polluted and dark sky sites. Blocks the light from mercury and sodium-vapour lamps. | 2" filter thread, each Astromania Ultra High Contrast Filter is individually inspected and proudly inscribed with the percentage of light transmittance of the O-III and H-beta emission lines. | As many celestial objects, such as nebulae, radiate at other wavelengths, a considerable increase in contrast can be achieved by this. The background sky appears darker and all at once, faint details become visible.

Mini-guide tube to quickly find objects and guiding stars, designed both for visual, as well as for photographic use.Take any 1.25 inch eyepieces in your collection, worm-focuser: fast focusing. Prevents rotation of the camera and eyepiece. Or use it as a comfortable, large viewfinder to waste less time finding objects in visual observation. | 190mm focal length. Compact mini guide scope designed for use with astrophotography telescopes up to 1500mm focal length with bright, wide-field optics puts numerous potential guide stars in view so you'll never have to search for one! There is an extension tube locking thumbscrew to hold the extension tube in place, and the other two holes are equipped with built-in hexagonal screws, which you can also tighten the two hexagonal screws with an hex wrench to lock the extension tube if necessary. | Adjustable-aim dovany weight to an astrophotography setup and can conveniently be stashed in an accessory case between uses. "Dovetail guide scope bracket installs on virtually any astrophotography telescope quickly and easily. | The sturdy metal housing made ​​of black anodized aluminum. Looking out not only solid, but is also very robust. A milled and knurled ring allows easy and precise fine focus adjustments. It comes with matching pipe clamps and a Synta-style mounting plate to make assembly and installation as easy as possible. | Have a built-in worm-focuser with Brass Compression Ring and 2 thumbscrews,40mm focusing range (10mm focusing range with micro-focusing Helical focuser, the rest is by a fixable, scaled drawtube) is made possible by an extremely precise focus adjustment. The mechanism has a determined orientation: This is mounted cameras or eyepieces - and thus also the area with your guide stars - not rotate during focusing.

Mini-guide tube to quickly find objects and guiding stars, designed both for visual, as well as for photographic use.Take any 1.25 inch eyepieces in your collection, worm-focuser: fast focusing. Prevents rotation of the camera and eyepiece. Or use it as a comfortable, large viewfinder to waste less time finding objects in visual observation. | 240mm focal length. Compact mini guide scope designed for use with astrophotography telescopes up to 1500mm focal length. With bright, wide-field optics puts numerous potential guide stars in view so you'll never have to search for one! There is an extension tube locking thumbscrew to hold the extension tube in place, and the other two holes are equipped with built-in hexagonal screws, which you can also tighten the two hexagonal screws with an hex wrench to lock the extension tube if necessary. | Adjustable-aim dovany weight to an astrophotography setup and can conveniently be stashed in an accessory case between uses. "Dovetail guide scope bracket installs on virtually any astrophotography telescope quickly and easily. | The sturdy metal housing made ​​of black anodized aluminum. Looking out not only solid, but is also very robust. A milled and knurled ring allows easy and precise fine focus adjustments. It comes with matching pipe clamps and a Synta-style mounting plate to make assembly and installation as easy as possible. | Have a built-in worm-focuser with Brass Compression Ring and 2 thumbscrews,45mm focusing range (10mm focusing range with micro-focusing Helical focuser, the rest is by a fixable, scaled drawtube) is made possible by an extremely precise focus adjustment. The mechanism has a determined orientation: This is mounted cameras or eyepieces - and thus also the area with your guide stars - not rotate during focusing.

The inner diameter of the tube rings is 80 mm for Telescopes between 53 to 79mm tube diameter can be mounted adjustable. | The adjustment crews have teflon inlays for avoiding unaesthetic scratches and pressure marks on the telescope while still ensuring reliable clamping. | Solid metal guide scope rings for compact Finderscope or Guidescope with knurled metal screws. Big screws with maximum grip allow easy use - even with gloves. | The mounting bar has two M6 through-holes on both sides for easy adaption to rings. And three threaded through-holes: the center hole has ¼"-20 threads and the two larger holes on either side of center have M8 x 1.25 threads. | Set: pair of two tube rings made of metal.The Astromania guide scope rings are suitable for small and medium-sized guiding telescopes.eg.Astromania 60mm Compact Deluxe Finder & Guidescope Kit. Ideal for astrophotography for mounting a guide scope parallel to the main telescope.

The inner diameter of the tube rings is 90 mm for Telescopes between 63 to 89mm tube diameter can be mounted adjustable. | The adjustment crews have teflon inlays for avoiding unaesthetic scratches and pressure marks on the telescope while still ensuring reliable clamping. | Solid metal guide scope rings for compact Finderscope or Guidescope with knurled metal screws. Big screws with maximum grip allow easy use - even with gloves. | The mounting bar has two M6 through-holes on both sides for easy adaption to rings. And three threaded through-holes: the center hole has ¼"-20 threads and the two larger holes on either side of center have M8 x 1.25 threads. | Set: pair of two tube rings made of metal.The Astromania guide scope rings are suitable for small and medium-sized guiding telescopes.eg.Astromania 70mm Compact Deluxe Finder & Guidescope Kit. Ideal for astrophotography for mounting a guide scope parallel to the main telescope.

The inner diameter of the tube rings is 105 mm for Telescopes between 50 to 103mm tube diameter can be mounted adjustable. | The adjustment crews have teflon inlays for avoiding unaesthetic scratches and pressure marks on the telescope while still ensuring reliable clamping. | Solid metal guide scope rings for compact telescopes and finders with flat support surface and knurled metal screws. | There is a female M6 thread at the base for easy adaption to dovetail bars or dovetail clamps. Big screws with maximum grip allow easy use - even with gloves. | Set: pair of two tube rings made of metal.The Astromania guide scope rings are suitable for small and medium-sized guiding telescopes.Ideal for astrophotography for mounting a guide scope parallel to the main telescope.

The inner diameter of the tube rings is 127 mm for Telescopes between 70 to 120mm tube diameter can be mounted adjustable. | The adjustment crews have teflon inlays for avoiding unaesthetic scratches and pressure marks on the telescope while still ensuring reliable clamping. | Solid metal guide scope rings for compact telescopes and finders with flat support surface and knurled metal screws. | At the base, the rings have a flat surface with four female M6 threads (Inner pair 20 mm - outer pair 38 mm) for easy adaption to dovetail bars or dovetail clamps. Big screws with maximum grip allow easy use - even with gloves. | Set: pair of two tube rings made of metal.The Astromania guide scope rings are suitable for small and medium-sized guiding telescopes.Ideal for astrophotography for mounting a guide scope parallel to the main telescope.

The advantages in a nutshell:(1)Mini guide scope for rapidly locating astronomical objects and guide stars.(2)Designed for both visual and photographic use.(3)Use any 1.25 inch eyepiece from your collection.(4)Worm-gear focuser for rapid focusing - prevents the rotation of camera and eyepiece. | Planetary imaging and guiding camera - the key to successful planetary photos: The CMOS Camera is a highly sensitive planetary camera which can turn you into a successful planetary photographer. The heart of this camera is a sensitive and low-noise CMOS chip. An optimal launching pad for sharp and high-resolution planetary imaging. But this camera can also be used to guide via a guide star. | Large field of view and high resolution: With a resolution of 1280x960 pixels, you can plot a course directly to the planets in our solar system. The wide field of view is ideal for sharp and wide-scale images of the lunar surface. Unlike normal entry-level cameras, this camera offers a much larger chip area. | The robust metal housing is made of black, anodized aluminium: It not only looks solid, but is very sturdy. A milled and knurled focusing ring allows straightforward and precise fine focusing. It comes with matching tube clamps and a Synta-style mounting plate to make assembly and disassembly as simple as possible. | Guiding with the Mini Guide Scope - makes astrophotography easier and needs less equipment: This small guide scope takes does the job of a 'classic' guide scope - but it is lighter and much easier to use! Previously, long and unwieldy guide scopes were used to locate a guide star. But this is no longer necessary! The sensitivity of modern astronomy cameras makes this possible. You simply attach the mini guide scope onto your telescope like a finder.

The new Astromania Off Axis Guider is the lowest profile off axis guider that we know. Despite this no compromise has been made with the function and operating comfort of this versatile Off Axis Guider. mechanical flexure between main and guiding telescope can possibly ruin the tracking accuracy if you use an off axis guider. | 1) Can be used with correctors & DSLR: The only Off Axis Guider that can be used between a coma corrector (or field flattener) and a DSLR camera without leaving the tolerance for the distance between camera and corrector. 2) Can be used with cooled CCD cameras: The off axis guider provides enough space for filter wheels or filter drawers when using cooled CCD cameras. | Place the OAG behind the corrector: The Astromania OAG is used between the corrector and the camera. Using an off axis guider in front of the corrector is not useful. The guide star would be distorted, the distances on both optical paths are too different and you might even get focusing problems with the main camera. Behind the corrector you can avoid these problems, but this only works due to he low profile of the Astromania OAG! | Large Clear Aperture: Compared with many simpler guiders the Astromania OAG not only has a shorter overall length, but also a larger clear aperture. A "T2 keyhole" can be avoided, resulting in better illumination for large sensor cameras up to 45mm diagonal.The load for the mount is much reduced. There is no need for a guide scope and the setup will remain more compact. You work with the main telescope's resolution and focal length, not with the typically lower resolution of a guide scope. | The Off-Axis Guider comes complete with the adapter required for a 2" focuser. If no autoguider, but rather a reticle, is to be connected, then this Adapter or this Adapter is required. We also have T2-rings in our product range for optical path compensation. Depending on the length required, they are: 7.5mm, 10mm, 15mm and 40mm.

M48*0.75 female thread (for 2" adapter)to M42*0.75 male thread adapter. | Converts an M48 male thread to a T2 male thread. | M48-M42. All metal construction and anodizing aluminium process, durable for long time use. | This is a very high quality anodized aluminum adapter. | With it you can convert a male M48 thread to a male T2 thread with minimum possible mechanical length.

Ring attaches securely to Canon EOS DSLR or SLR camera body and provides a T-thread interface. Fits All Ca non EOS SLR/DSLR Cameras with EF Mount. | Securely fits Canon EOS 35mm DSLR and SLR cameras via bayonet-style attachment. | All metal construction and anodizing aluminium process, durable for long time use. | Threaded ring couples Canon EOS camera body to standard T-thread on most camera adapters. | Couples Canon EOS camera body to standard T-thread found on many camera adapters used for astrophotography.

Carefully selected sensor with high sensitivity and fast frame rate,as well as long time exposure,protect window with double-side AR coating. Aluminum CNC housing with standard 1.25" interface(outer) to fit to telescope eyepiece and standard C-mount(inner) for standard industrial lens. | A built-in ST4 auto guider port for the easy connection of the auto guider,thermal design to transfer the sensor heat to the aluminum house quickly. | Dedicated astrophotography software to support video preview, video record, video processing, image capture and process, dark field correction and raw data output. | 1.25" nosepiece for precise focusing and 1.25” astronomical filter installation,Native/ASCOM/WDM driver for easy connection with 3rd party astrophotography softwares. | A:Gift box L:15cm W:15cm H:10cm (0.8~1.0Kg/ box) B:GCMOS series USB2.0 C-Mount camera C:High-speed USB2.0 A male to B male gold-plated connectors cable /2.0m D:2.0m guide cable E:1.25 inch nosepiece F:CD (Driver & utilities software, Ø12cm).

Allows T2 T Mount lens to be used on micro 4/3 camera body,such as Olympus EP1,EP2,EPL1,Panasonic DMC-G1,DMC-GH1, DMC-GF1 camera bodies. | Smooth attachment surface designed for seamless mount.Inner ring can be rotated with a standard allen key (allen key provided) to ensure lens is always right way up. | All metal construction and anodizing aluminium process, durable for long time use. | Having the right equipment to shoot art-gallery images of the heavens starts with the right telescope, camera and camera adapter, and ends here. | Allows focusing to infinity, easy and smooth for you to use.

Threaded for standard 1.25- inch astronomy filters and barlow lens. | Comes with sturdy plastic dust caps-protect the eyepiece from dust and moisture. | 1.25- inch 20mm plossl eyepiece set , gives the widest viewing field along with extra sharpness and long eye relief. | 4-element plossl design, has a approx 53 degree AFOV. Perfect for broad-field lunar observations, medium-sized star clusters, and a wide range of cloudy nebulas and deep-sky targets. | Fold-down rubber eyeguard Threaded for standard 1.25- inch astronomy filters.

Metal filter cell threads directly into the 1.25- inch barrel of your telescope eyepiece. | Mounted in a nicely anodized housing. | Perfectly neutral color will not alter the natural color of the Moon. | Enhances the contrast of the moon and planets in photographic images. | Especially useful for large aperture telescopes through which the light of the Moon can be extremely overwhelming.

All metal construction, anodic oxidation treatment. | In effect, this device enables you to use the telescope lens as your camera lens for digi-scoping. | 1.25" TO T2 adapter. Threaded for standard 1.25- inch astronomy filters | Telescope Digiscoping Adapter. | This is for one high-quality 1.25" to M42*0.75 Adapter.

New right angle viewfinder for amateur and professional photographers,take pictures at a more comfortable angle. A must have for both amateur and professional photographers. | Manually adjust between 1X and 2.5X magnification, which enables you to have access into smaller details of the view and makes you focus easier when doing macro shooting. | Keeps viewing correct subject position even mounted at different angle. Up, down, right, left, it can be mounted at different angle, allowing you to easily take perfect shot in your comfortable angle with correct subject position. Furthermore, we use high quality material to ensure comfortable operating experience. | Lens construction: 9 elements in 5 groups with high quality roof prism. Diopter adjustment: Built-in (+/- 4) for variations in eyesight. With included adapter,this angle viewfinder can be mounted on many DSLR cameras such as Canon, Nikon, Pentax, Minolta, Dynax, Samsung, Olympus. | Adapters for: Samsung Gx-IS, Pentax*istD/*istDs, Pentax SLR; Minolta X300/700, Dynax7D, 7, 807si, Dynax 707si, 600si classic, Dynax9xi, 5xi; Nikon F4/F5/F6/F50/F55/F60/F65/F70/F75/F301/F401/F501/F601/F80/F90/F100/F801/Fm2/Fm3, Nikon D100/D70/D70S/D50 Pronea, Fuji S2Pro/S3Pro; with 18mm adapter,it fits Canon EOS300/88QD/500N/300D/EOSADI/EOSIN/EOS60; with 22mm adapter, it fits Canon EOS3/5/30/33/55/ Canon 50D/50E Series, Olympus E-300.

Image erecting BAK4 prism with anti-reflection coating. | High accuracy and high light reflection prism. | Internally matte blackened and threaded for no internal stray light reflection. | 1.25" adapter with brass compression ring included. | Entirely aluminum, black anodized, smooth finish. If there is any problem of focusing due to the light path for a few telescopes, please feel free to contact us for help.

Metal filter cell threads directly into the 2- inch barrel of your telescope eyepiece. | Mounted in a nicely anodized housing. | Perfectly neutral color will not alter the natural color of the Moon. | Enhances the contrast of the moon and planets in photographic images. | Especially useful for large aperture telescopes through which the light of the Moon can be extremely overwhelming.

Male thread - M48*0.75. Female thread - M48*0.75, eliminates a range of focusing problems. | The extension tube has a M48*0.75 interior thread and a M48*0.75 exterior thread for elegantly solving spacing problems in astrophotography. | Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners. | All metal construction and anodizing aluminium process, durable for long time use. | The required spacing can be achieved by combining several extenders of differing lengths,you can use 1 piece, 2 pieces , 3 pieces or 4 pieces of the extension rings as you like.

Male thread - M48*0.75. Female thread - M48*0.75, eliminates a range of focusing problems. | The extension tube has a M48*0.75 interior thread and a M48*0.75 exterior thread for elegantly solving spacing problems in astrophotography. | Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners. | All metal construction and anodizing aluminium process, durable for long time use. | The required spacing can be achieved by combining several extenders of differing lengths,you can use 1 piece, 2 pieces , 3 pieces or 4 pieces of the extension rings as you like.

Male thread - M48*0.75. Female thread - M48*0.75, eliminates a range of focusing problems. | The extension tube has a M48*0.75 interior thread and a M48*0.75 exterior thread for elegantly solving spacing problems in astrophotography. | Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners. | All metal construction and anodizing aluminium process, durable for long time use. | The required spacing can be achieved by combining several extenders of differing lengths,you can use 1 piece, 2 pieces , 3 pieces or 4 pieces of the extension rings as you like.

Male thread - M42*0.75. Female thread - M42*0.75,eliminates a range of focusing problems. | The extension tube has a T2 interior thread and a T2 exterior thread for elegantly solving spacing problems in astrophotography. | Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners. | All metal construction and anodizing aluminium process, durable for long time use. | The required spacing can be achieved by combining several extenders of differing lengths,you can use 1 piece, 2 pieces , 3 pieces or 4 pieces of the extension rings as you like.

Bahtinov masks take the guesswork out of focusing and even get over the seeing conditions as it is a mathematical type approach to the task.The best focus for your telescope quickly and easily. | Suitable for use on all types of telescope - reflectors, rafractors, Dobsonians, Mak-Cas and SCTs. They are made from precision laser cut enforced plexiglass, which is stiff and long lasting. They will never be brittle in the cold, unlike some other masks which are made from normal plastics. | The masks grip the telescope tube gently but firmly with three metal posts which have non-scratching silicon sleeves to protect you valued telescope surface. This prevents slippage, whilst allowing the mask to remaining perfectly central. Because of this 3-post mounting, the mask remains centered, whilst fitting a wider range of telescopes. | They are made from 2mm thick laser cut plexiglass and the securing screws are capped with soft plastic so that they do not damage your telescope.These high quality Bahtinov masks are adjustable to fit a wide range of optical tubes, unlike masks which are only able to fit one telescope. They have adjustment latitude of about 105-150mm, depending on model, in aperture making them very versatile. | Please be assured that these focusing masks will work excellently for both reflectors and refractors with whatever focal length. All you need to do is to measure your telescope tube size and choose the right size of the mask (contact us if you are not sure where to measure).

The telescope adapter has a diameter of 1.25 inches for insertion in place of a 1.25 inch telescope eyepiece, allows the camera to be put into standard 1.25" eyepiece holders. | The opposite end of this adapter has a C-Mount (1 inch diameter with 32 threads per inch) standard for all "C"inama photography movie cameras. | For a 1.25" adapter to use C or CS mount CCTV type cameras with telescopes,threaded to accept standard 1.25" filters. | For one high quality C-mount (male thread) to 1.25" (fit any telescope with 1.25" eyepiece tube) eyepiece convertor for telescopes. | Watch the moon or even local scenery from your living room HDTV with a C-Mount Video Cam or any device with a VGA socket. The inside of the adapter is fully threaded to minimize reflections,made of black anodized aluminum.

A must-have to safely observe without damaging your eyes - optical filter fits snugly over your telescope's aperture to block 99.9% of incoming light. | This filter features an inside diameter of 230mm - it is designed to fit optical tubes with an outer diameter of 220mm to 252mm,the outer diameter of filter is 260mm. | The filter meets ISO 12312-2: 2015 and Amazon has verified the security. Baader Astro film in a sturdy aluminum cell. | Three clamping screws with protective plastic caps - ensure a perfect fit and are also gentle on your telescope,attaches directly - filter in anodized aluminium mounting. | NOTE: (1)Never Use Your Telescope If The Filter is Any Disrepair.(2)Because of the larger diameter, some filters may have wavy line on the film which will not have any effect for observation.

Included: 6X COLOURED EYEPIECE FILTERS(1.25 inch eyepiece Lunar and Planetary filters #25 Red, #21 Orange, #12 Light Yellow, #58A Dark Green, #80A Blue and #56 Green); 1X 1.25" ND96 MOON FILTER | There 1.25" filters offer excellent cost effectiveness. The filter is suitable for all visual observing and photographic uses. | The filter mount is precision manufactured from metal and is extremely thin to minimise shadowing and diffraction,the threads on both sides of the filter make it also possible to combine different filters. | Handy color planetary telescope eyepiece filters help enhance your view of the planets and Moon, unveiling specific features and enabling you to discern more detail. | High-grade Schott optical glass is vat-dyed for even color coating, then anti-reflection coated for maximum light throughput,each filter has a metal filter cell and is threaded for use with 1.25-Inch telescope eyepieces and filter-threaded accessories.

M42X0.75 female thread on both sides. | This is a very high quality anodized aluminum adapter. | Converts an M42X0.75 male thread to a M42X0.75 female thread. | All metal construction and anodizing aluminium process, durable for long time use. | Makes it possible to attach M42X0.75 male thread and M42X0.75 male thread accessories together. Such as, you can upgrade your R&P focuser by adding "Astromania 1.25" High Precision Double Helical Focuser" to the end of the R&P focuser, if there is M42X0.75 male thread on the R&P focuser. This adapter will play very important part in connecting "Astromania 1.25" High Precision Double Helical Focuser"and R&P focuser.

This is the latest version with new reticle engraving. Good alignment of the mount with the North Celestial Pole can be achieved in a short time by using the polar finder. | The sighting is improved, with the precise alignment making long-term astrophotography possible. The viewfinder arrangement has been further improved, with precision alignment now possible allowing long exposure photography to be done. | Correct alignment of the mount can be achieved within a very short time with this improved polar finder. As the celestial North Pole (to which the telescope mount must be aligned) does not exactly coincide with the position of the Pole Star, using this polar finder is very important. | This accessory threads into the mount's housing along the Right Ascension axis. The optics feature a printed reticle that makes aligning on Polaris easy and fast. | Quick polar-alignment gives you more time to enjoy the view at the telescope eyepiece. Ensures accurate tracking and slow-motion control for your telescope mount.