This SV220 Dual-Band Telescope Filter 2 inches - SV226 Filter Drawer Combination is best for deep space astrophotography.

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• Universal lens warmer. Lens Warmer prevents telescope camera lens from fogging dew by warming up the lens on a camera or telescope. It also warming up water bottle and use as a knee strap;
• USB port design, 1.8m usb cable length. You can connect it your power bank or any other power source with a USB port. 1.9A to 2.0A input current, 5V input voltage;
• Temperature regulator adjustable. Strong medium weak heating modes that you can adjust the temperature according to your requirements;
• Design for telescope. 50mm bandwidth does not affect the focusing and no dark angle of the field of view, fit lens outer diameter below 127mm;
• Heating fast and evenly. Built in aluminum make heating evenly. Alloy fiber heating wire provides super fast. Three layer insulation material to reduce heat dissipation.

• Universal lens warmer. Lens Warmer prevents telescope camera lens from fogging dew by warming up the lens on a camera or telescope. It also warming up water bottle and use as a knee strap;
• USB port design, 1.8m usb cable length. You can connect it your power bank or any other power source with a USB port. 1.9A to 2.0A input current, 5V input voltage;
• Temperature regulator adjustable. Strong medium weak heating modes that you can adjust the temperature according to your requirements;
• Design for telescope. 50mm bandwidth does not affect the focusing and no dark angle of the field of view, fit lens outer diameter below 127mm;
• Heating fast and evenly. Built in aluminum make heating evenly. Alloy fiber heating wire provides super fast. Three layer insulation material to reduce heat dissipation.

Set Includes:

• SV215 Clickstop Zoom Eyepiece 1.25 inch 3-8mm, SKU: W9166A
• SV182 6x30 Right-Angle Finder Scope, SKU: W9141B
• SV188P 90 Degree Dielectric Mirror Diagonal, SKU: F9171B(1.25inch) / F9171D(2inch)

The product corresponding to the SKU is as follows:

• SV406P 20-60X80 ED Spotting Scope, SKU: F9355B
• SA205 10x42 ED Flat-field Binoculars, SKU: F9389B
• SA205 8x42 ED Flat-field Binoculars, SKU: F9389A
• SC311 WIFI Camera, SKU: F9384A
• SA206 Night Vision Goggles, SKU: F9394A

Note: SV406P comes with an eyepiece

Kits Related Products:

• SV406P Spotting Scope
• SC001 WiFi Camera
• SA402 Tripod
• SV214 Pro Phone Adapter
• SV190 Eyepiece

The product corresponding to the SKU is as follows:

• SV406P 20-60X80 ED Spotting Scope, SKU: F9355B
• SV123 Spotting Scope Camera Adapter, SKU: F9194A
• SV195 Adapter for Canon Cameras, SKU: W2054A
• SV194 Adapter for Nikon Camera, SKU: W1077A
• SV196 Adapter for Sony Cameras, SKU: W9153A

Note: SV406P comes with an eyepiece

Learn more about how to connect SV406P with 1.25-inch astronomical eyepieces

• Extra-Low Dispersion ED Glass reduces chromatic aberration which causes color fringing and produces a cleaner and brighter image;
• Large field of view; 42mm objective lens provides a field of view at 394ft/1000yards;
• IPX7 waterproof through nitrogen-filled internals to handle the most extreme weather conditions; ensuring you can watch uninterrupted views;
• Premium coatings provide a high light transmittance across the entire visible light spectrum; guarantee a bright; sharp image even in twilight conditions by maximizing transmission of fading light;
• High-quality Magnesium alloy body allows a long term use;
• Large central focusing wheel for easy focusing; easy to operate; just turn the focusing knob to get clear and sharp images;
• Diopter adjustment; eyepiece built-in diopter adjustment lens; can adjust the visual balance of both eyes; easy to observe the target.

• Correct chromatic aberration; SV231 telescope filter prevents unwanted color banding in the blue spectral range; minimizes blue wavelengths in out-of-focus areas;
• OD＞4; the higher the filter cut-off depth; the smaller the noise and the higher the imaging contrast;
• Full thread design; M48x0.75 specification; male thread; thread is not easy to wear; you can overlay other filter to use;
• AR anti-reflection coating design; transmittance exceeds 95%; improves the contrast and clarity of fast achromatic telescopes, ensures image quality and brightness; obtains more observable light;
• Good performance coating; telescope color correction filter has plasma-enhanced dielectric coatings result in hard; scratch-resistant and waterproof filters;
• 300-1200/NM wavelength; blocking light damage and eliminating blue and purple streaks.

• Dual ED objective lens (4 pieces/4 group) ultra-low dispersion optical glass that significantly reduces chromatic aberration; the ed spotting scope presents clear images with good color correction; and enjoy lifelike colors and contrast;
• 100mm large-aperture; improved light collection capabilities; provides wide field of view and support for long-distance observation; allow the spotting scope to display a bright field of view;
• Detachable eyepiece; SA401 spotting scope can be freely combined to achieve a variety of observation methods; and can be compatible with SC001 WIFI camera to download and share photos in real time;
• APO apochromatic; increase the clarity and color restoration of the image; eliminate chromatic aberration for a variety of colors, and make the imaging effect sharp and clear;
• Smooth focus wheel; the scope can accurately capture fast-moving birds; easily adjust the focus; achieve high-speed focusing; and capture moving birds;
• Standard thread interface; use the universal standard ¼-20 tapped hole; 
• Waterproof and fogproof; spotting scope with built-in shading protects the objective from raindrops and snow; avoids sudden environmental changes to damage.

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• Extra-Low Dispersion ED Glass reduces chromatic aberration which causes color fringing and produces a cleaner and brighter image;
• Large field of view; 42mm objective lens provides a field of view at 394ft/1000yards;
• IPX7 waterproof through nitrogen-filled internals to handle the most extreme weather conditions; ensuring you can watch uninterrupted views;
• Premium coatings provide a high light transmittance across the entire visible light spectrum; guarantee a bright; sharp image even in twilight conditions by maximizing transmission of fading light;
• High-quality Magnesium alloy body allows a long term use;
• Large central focusing wheel for easy focusing; easy to operate; just turn the focusing knob to get clear and sharp images;
• Diopter adjustment; eyepiece built-in diopter adjustment lens; can adjust the visual balance of both eyes; easy to observe the target.

Flat Field Correction: Resolves edge blurring, distortion, field curvature, and chromatic aberration;
ED Glass: Effectively eliminates chromatic aberration ;
FMC Coating: Enhances light transmission and minimizes light loss;
Magnesium Alloy Lens Body: Lightweight, corrosion-resistant, ensuring a longer service life;
Diopter Adjustment: Allows people with nearsightedness or presbyopia to view without wearing glasses.
Anti-skid Focusing Wheel: Fast and easy to operate for precise focusing.

Set includes:

• SA401 25-75X100 APO Spotting Scope
• SC311 WIFI Camera
• SA406 1.25inch adapter

Note: SA401 comes with an eyepiece

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• Double pair of magnets; SV226 photographic filters drawer compared with traditional screw rotation; magnet has stronger adsorption force; which is convenient for you to install and use
• Two filter holders; compatible with 1.25-inch and 2-inch filters; plug and play; reducing repeated installations in dark environments
• Locking function; lock screw can adjust the tension to eliminate the gap; solve the light leaking issue under long exposure; which is a double insurance for you
• M42-M48 adapter; camera side thread is male; filter mounts thread is female; you can use the adapter to coonect cameras of different specifications
• CNC integrated molding; more precise production process; strong and sturdy; you can use filter drawer with confidence
• Filter drawer thickness; the thickness is related to back focal length; back intercept affects the quality of imaging; it limits the use of accessories and optical path length
• Use with telescope; connect the telescope to the focal reducer and drawer filter; then connect the adapter to the camera

• APO and Double ED glasses reduce the chromatic aberration, which gives a bright image;
• The central focus ring allows spotting aims clearly at a fast speed;
• Fully multi-coated and K9 and Porro prism allows more light transmission;
• 45°design is an ergonomic proportion and suitable for eyes observing or capturing;
• IPX6 waterproof and anti-fog.

Note:SA401 comes with an eyepiece

• The SV227 SII filter blocks infrared wavelengths from 700nm to 1000nm so you don't need a separate IR-Cut filter;
• 2 inch mounted; the filter can thread directly into the 2 inch barrel of your telescope eyepiece;
• 300-1000nm wavelength range; the SVBONY SII 5nm 2" Filter transmits a 5nm bandwidth of light that is centered at 672nm;
• This SII narrow band filter reduces other transmissions; including wavelengths of light that are responsible for light pollution;
• The narrow bandwidth and high transmission rate of this filter will make you experience a major boost to contrast.

Note: This OIII filter is NOT for use on the Sun, and is also unsuitable for telescopes with a focal ratio below f/4

• The SVBONY Narrowband OIII filter is designed for nebula observation allowing 5nm bandwidth of light centered on a wavelength of 500.7nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high- and low-pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere;
• OIII 5nm 2" Filter is designed to deliver 90% transmission at the 500.7nm line which provides you with well defined nebulae structures;
• 300-1000nm wavelength range; the SVBONY OIII 5nm 2" Filter transmits a 5nm bandwidth of light that is centered at 500.7nm;
• 2 inch mounted; the filter can thread directly into the 2 inch barrel of your telescope eyepiece.

Note: This OIII filter is NOT for use on the Sun, and also unsuitable for telescopes with a focal ratio below f/4 

• SVBNOY H-Alpha 5nm 2" Filter blocks the transmission of contrast-killing light pollution wavelengths; improve contrast and detail;
• This H-Alpha filter also blocks infrared wavelengths from 700nm to 1000nm so you don't need a separate IR-Cut filter
• Allowing 5nm bandwidth of light centered on a wavelength of 656.3nm to pass through; 90% transmission;
• Astrophotography under a light-polluted night sky can be difficult; the solution is an H-alpha filter; the H-alpha cut-off filter works to filter out a large part of this light pollution;
• 2 inch mounted; the filter can thread directly into the 2 inch barrel of your telescope eyepiece.

Note: This OIII filter is NOT for use on the Sun, and also unsuitable for telescopes with a focal ratio below f/4

• Flat Field Correction: Resolves edge blurring, distortion, field curvature, and chromatic aberration;
  ED Glass: Effectively eliminates chromatic aberration ;
  FMC Coating: Enhances light transmission and minimizes light loss;
  Magnesium Alloy Lens Body: Lightweight, corrosion-resistant, ensuring a longer service life;
  Diopter Adjustment: Allows people with nearsightedness or presbyopia to view without wearing glasses.
  Anti-skid Focusing Wheel: Fast and easy to operate for precise focusing.

Enhance your SV503 80 experience with our recommended accessories! Introducing the SV193 flat field flattener/focal reducer, versatile multifunctional dovetail slot, and SV211 telescope handle bar for added convenience. But wait, there's more! Customize your setup with our hot-selling SV220 2inch dualband narrowband filters and SV172 PWM function 430mm dew heater strip.

Explore the perfect combinations in bundle1, bundle2, and bundle3 for a truly optimized astrophotography experience. Upgrade your SV503 80 today and capture the stars like never before!

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Set includes:

• SV503 102ED Telescope, SKU: F9359D
• SV193 focal reducer, SKU: W9152D
• SV211 handle bar(screws and mout screws inside), SKU: W9163B
• SV188P 90 Degree Dielectric Mirror Diagonal, SKU: F9171B

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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.

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• This dual narrow band telescope filter properly designed for astrophotography both in light polluted environment;
• Take color images without needing to combine images with multiple filters. Useful for imaging emission nebulae, planetary nebulae and supernova remnants;
• Designed to sharply cut off the inference of artificial light from sodium vapor or mercury vapor street lights and other unwanted disturbance like sky glow.

The product corresponding to the SKU is as follows:

• SV46P 20-60x80 ED Spotting Scope, SKU: F9339A
• SV205 Electronic Camera, SKU: F9159C
• SV105 Planetary Camera, SKU: F9159B
• SV123 Spotting Scope Adapter, SKU: F9194A
• 1.25 Inch Adapter, SKU: F9164A