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SV221
  • Enhanced Aluminum Die; the SV221 diagonal mirror is designed with enhanced aluminum mold; which has higher light transmittance and clearer vision;
  • 1.25 inches diameter; the diagonal has a diameter of 1.25 inches; which can be applied to a 1.25 inches telescope and a 1.25 inches eyepiece;
  • With a brass pressure ring; the telescope diagonal has a brass pressure ring; which can prevent surface damage and scratch marks when the eyepiece is used with the diagonal;
  • Supports 1.25-inch filters features internal extinction treatment and supports the connection of 1.25-inch filters; Offering versatility for various observations;
  • With filter thread; the diagonal has M28.5x0.6mm filter thread; which supports the connection of 1.25 inches filter;
  • 90 degrees deflection angle design; you don't have to bend over when performing visual observation; and the observation experience is more comfortable;
  • Internal extinction design; the correct image prism diagonal has internal extinction treatment; and the acquired image is clearer and brighter.
US$ 23.99 US$ 17.99
-25%
SV221
  • Enhanced Aluminum Die; the main mirror housing is made of precision molded ABS plastic and the two end barrels are precision machined from aluminum;
  • 1.25 inches diameter; the SV221 diagonal mirror can be applied to a 1.25 inches telescope and a 1.25 inches eyepiece;
  • With a brass pressure ring; the diagonal mirror has a brass pressure ring; which can prevent surface damage and scratch marks when the eyepiece is used with the diagonal;
  • Supports 1.25-inch filters features internal extinction treatment and supports the connection of 1.25-inch filters; Offering versatility for various observations;
  • With filter thread; the diagonal mirror has M28.5x0.6mm filter thread; which supports the connection of 1.25 inches filter;
  • 90 degrees design; the diagonal mirror 90 degrees deflection angle design; you don't have to bend over when performing visual observation; and the observation experience is more comfortable;
  • Internal extinction design; the SV221 has internal extinction treatment; and the acquired image is clearer and brighter.

Note: This diagonal can only be used with refractor telescopes and some catadioptric telescopes like Schmidt-Cassegrain, Maksutov-Cassegrain, etc. It not meant for use with Newtonian / DOB reflector telescopes or other variants of Newtonian telescopes.

US$ 19.99 US$ 14.99
-25%
SV223
  • Firm locking; SV223 diagonal mirror has a clicklock locking mechanism; just turn the clicklock to securely fix the accessory; ensuring the eyepiece is installed and used stably; not easy to fall off
  • Coating: 99% Reflectivity SV223 diagonal mirror has metal high reflective dielectric coating
  • Surface accuracy: 1/10λ
  • High-quality machining out of the aluminum; SV223 star diagonal is composed of High-quality aluminum elements; chic; light and stable; internal antireflection baffling for highest contrast
  • 90 degrees design; SV223 star diagonal has a 90 degrees refraction angle; providing a better observation experience when visually observing.

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US$ 149.99 US$ 104.99
-30%
SV222
  • 1.25-inch aperture; SV222 45 degree diagonal is 1.25-inch aperture; strong versatility; can be applied to 1.25-inch eyepieces and astronomical accessories
  • The image is clear and bright; correct image diagonal adopts a 45-degree upright prism; with full multi-layer coating and phase coating; the image contrast is high; the picture is clear and bright
  • Delustering design; blackened and baffled inside; it can prevent internal stray light reflection
  • Metal material; 1.25 inch SV222 telescope diagonal is made of aluminum alloy metal material; with black anodizing; sturdy and durable
  • The installation is stable; brass pressure ring design; SV222 45 degree diagonal is firmly connected with the eyepiece and does not shake; it will not scratch the eyepiece
US$ 54.99 US$ 41.24
-25%
SV223
  • 1.25" diameter; SV223 diagonal adapter can be combined with 1.25" eyepieces and barlow lens; suitable for any 1.25" telescope accessories;
  • Stable installation; the SV223 dielectric mirror has a clicklock locking mechanism; which can realize ultra-fast clamping action and ensure the stable installation and use of the eyepiece; SV223 star diagonal not easy to fall off
  • Image is clear and bright; High precision 11.5mm thick mirror substrate flat for optimal image stability. the SV223 dielectric mirror is equipped with a thick precision optical flat mirror with an enhanced 99% reflective dielectric coating; which has a large amount of light transmission and a good imaging effect
  • High-quality aluminum material; internal antireflection baffling for highest contrast; which is light and stable; ensuring that the star diagonal is durable and can reduce the weight of the equipment without affecting the balance of the equipment
  • Enhanced Protection Features: Internal safety stop prevents barrels from hitting the mirror. Stainless Steel compression rings (both on diagonal and adapter) to prevent barrels from marring.

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US$ 115.99 US$ 79.99
-31%
SV222
  • 90-degree design; SV222 90 degree diagonal mirror provides a better observation experience when visually observing
  • Extinction thread; Extinction thread prevents stray light from entering; ensures observation quality
  • 1.25 inches thread; 1.25 inches SV222 telescope diagonal can connect filter; meet various needs of customers
  • Locking mechanism; SV222 90 degree diagonal mirror ensure the stable installation and use of the eyepiece; not easy to fall off
  • 99% high reflectivity; telescope accessory have large amount of light transmission; good imaging effect
US$ 89.99 US$ 69.99
-22%
SV188P
  • Dielectric coatings; super flat mirror with dielectric coatings to reduce reflected light loss; provide an over 99% reflective surface; good for astronomical viewing;
  • The 1.25-inch nosepiece fits 1.25-inch telescopes and accepts standard 1.25-inch filters, eyepieces, Barlow lenses, and similar accessories; The 2-inch nosepiece is compatible with 2-inch telescopes and accommodates standard 2-inch filters and accessories. You can choose either 1.25inch or 2inch diagonal based on your requirements;
  • 90 degree viewing angle; diagonal reflects the telescope’s light path 90 degree to provide a more comfortable viewing angle; best for observing objects overhead;
  • Correct upside down and left right reversed image; the view image is upright; but left and right reversed if use the 90 degrees to your telescope;
  • Brass compression ring; Built in brass ring and thumbscrew accessories avoid eyepiece to rotate during adjustments; effortless fixes more firmly and will not scratch your eyepieces barrels.

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US$ 49.99 US$ 34.99
-30%
F9171A

The SV188 mirror diagonal is suitable for refractors, Celestron EQ, Meade Infinity, and similar telescopes. It is not suitable due to the length reflectors for Newton.

US$ 27.99 US$ 20.99
-25%
SV152
  • The illuminated crosshairs eyepiece is precisely located in the center of the eyepiece field of view; providing accurate results that allow you to easily track the guide;
  • Wide 70-degree apparent field of view makes acquiring and centering target objects a breeze; comfortable 16mm eye relief So you do not have to worry about the goal disappearing quickly;
  • Brightness adjustable function; which has relatively low energy consumption at lower brightness; which can extend the life of the illuminator; with a crosshair for illumination;
  • The standard 1.25-inch filter thread is compatible with all 1.25-inch standard equipment; the threaded extinction inside the eyepiece can well suppress the reflection of internal stray light; giving you a bright high-contrast view;
  • Perfectly guided astrophotos; The crosshairs for easier use and alignment; excellent for accurate polar and go-to alignment;
  • Fully multi coated broadband green optics with superior optical performance; clarity is great.
US$ 174.99 US$ 134.99
-22%
SV503

This SV503 102ed doublet refractor Telescope Set is suitable for astronomical visual observation.

Visual Set-1 includes: SV503 102ed OTA, SV211 handle bar, SV182 right-angle star finder, SV188P 1.25" diagonal, 2x barlows, 6-20mm 1.25" 68-degree UWA eyepiece set, and universal dovetail slot.

Visual Set-2 includes: SV503 102ed OTA, SV211 handle bar, SV182 straight star finder, SV188P 1.25" diagonal, 2" extension tube 75mm, 2x barlows, 6-12-25mm 1.25" plossl eyepiece set, and universal dovetail slot.

Visual Set-3 includes: SV503 102ed OTA, SV211 handle bar, SV182 right-angle star finder, SV188P 1.25" diagonal, 6-9-15-20mm 1.25" 68-degree UWA eyepiece set, and universal dovetail slot.

US$ 855.99 US$ 641.99
-25%
SV550

This SV550 122 APO telescope set comes with a SV550 Triplet APO, SV211 203mm handle, SV223 90-degree 2" diagonal, zoom eyepiece, and a customized backpack for telescope. Get this great travel telescope suits for your astronomical visual observation.                                                                                                         

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US$ 2,309.99 US$ 1,799.99
-22%
SV305M Pro
  • Get a sharp image; uses an extremely sensitive CMOS monochrome sensor; the IMX290LLR-C; which has very high QE (80%); very low readout noise (1.0-3.2e); pixel size 2.9um; 1944*1096 pixels resolution; 6.46mm diagonal;
  • Has a stable transmission; built-in 128MB DDRII image buffer; cache the image and transfer it to the computer when the USB interface is not busy or being interrupted; get a sound frame; allows a slower computer with USB 3.0; to capture every frame ;
  • Improve camera sensitivity; has ROI and BIN functions; any resolution can be set; could read a smaller region of interest (ROI) out from the sensor; leaving the image scale of the object being imaged unchanged; greatly increase the camera rate; BIN2*2 pixel can merge two adjacent pixels; which can improve camera sensitivity;
  • Can automatically guide; designed with ST4 guiding port; supported by PHD2 and the ASCOM platform; use the computer to control the telescope; has an auto-guiding port; which connects directly to the auto-guider; which usually referred as an ST-4 port; works with analog signals;
  • Good transformation performance; using USB3.0 high speed data transmission; quick and efficient for planetary imaging.
US$ 270.99 US$ 189.69
-30%
SV503

This SV503 telescope combination set includes a 102mm ED F7 refractor telescope, a SV223 90 degree diagonal mirror, a SV182 6x30 right-angle correct-image optical finder scope, a SV211 203mm saddle handle bar and a universal dovetail base. It is a suitable telescope visual set for astronomy.

US$ 857.99 US$ 649.99
-24%
SV705C
  • SV705C telescope camera is not only for planetary imaging, but also super well for EAA (Electronically Assisted Astronomy) and nebula Imaging;
  • IMX585 CMOS color sensor; Compared with IMX485, it produces up to 45 fps with super low readout noise. It also increases the sensitivity by approximately 1.7 times compared to IMX485. IMX585 has 3 times the number of full well charges, and has a very high signal-to-noise ratio;
  • 1/1.2-inch frame, a pixel size of 2.9μm*2.9μm, a maximum resolution of 8.30 Mega Pixel (3586*2180), an imaging area of ​​11.2mm×6.3mm, and a diagonal of 12.85mm, which can obtain rich celestial details;
  • The near-infrared sensitivity is 1.7 times that of the previous generation; which can greatly improve the near-infrared shooting efficiency and capture more details of celestial objects under the same exposure time;
  • Dual-gain HDR; which still retains a very high dynamic range at high gain; about 8 times that of the previous generation; which can greatly reduce the read noise;
  • Based on the back-illuminated sensor and advanced pixel technology; the SV705C's full well charge can reach 38ke; the peak QE of SV705C can reach about 90%; you will get the better image quality;
  • The front end of the camera is a CS port; and is also equipped with a C-CS adapter ring; which can be used with C-mount lenses and CS-mount lenses to make time-lapse video; with a fisheye wide-angle lens; it can be used for all-day.

SV705C Connect with 2inch Field Flattener

US$ 379.99 US$ 249.99
-34%
SVBONY
  • Super wide angle 58 degree apparent field of view;
  • Super sharp - with five elements fully-coated high-index glass, to give you excellent aberration correction and extremely high resolution rivaling higher-priced eyepieces;
  • Blackened lens edges, anti-reflection threads for maximum contrast;
  • Sleek black barrel with safety undercut to reduce the possibility of the eyepiece slipping out of the focuser or diagonal.
US$ 45.99 US$ 32.19
-30%
SV48P

Unlock the full potential of your telescope equipment for moon observing with our versatile and multifunctional accessories! This  visual set includes:

US$ 809.99 US$ 519.99
-35%