SV240 Multi-Narrowband Filter Galaxy & Nebula NIR Near-infrared Light Pollution 2" Mounted for Urban Astrophotography
Telescope Wolves
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Estimated Arrival: Between Dec 06 and Dec 20. United States
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Description
SV240 2inch Multi-Narrowband Filter
SVBONY SV240 multi-bandpass filter is designed for urban astrophotography; it can isolate the Ha; OIII; and H-Beta from the background light pollution efficiently; you can astrophotography in urban without a long struggle to suburbs; save your time and high efficiency; and it is suitable for photoing most galaxies; reflection nebulae; emission nebula; and star clusters; and so on. The filter is ideal for astronomers who are already using color cameras and prefer not to switch to a monochrome camera setup. With the SV240, you can capture more details that cannot be achieved with the SV220.

Cut-off Depth ≥ OD4
Highly efficient in blocking urban light pollution or other background light; use this multi-bandpass filter for astrophotography in urban without traveling long distances to the suburbs. The SV240 narrowband filter can block the influence of urban light pollution and other background lights efficiently.
FWHM; 24nm; 20 nm; 115 nm; the wide wavelength and high transmittance of this multi-bandpass filters in Ha; OIII; H-Beta wavelength helps the colorful image photoing.

Resistant of BORTLE 8
The multilayer coating design for the remarkable performance in tacking light pollution and high transmittance in core wavelength. Astrophotography in urban comfortable. The strong ability to tacking light pollution up to BORTLE 8 allows it can be used in multiple cities, and no need to go to the suburbs. Time and labor saving.

Wavelength Range of The Filter
The wide range allows the filter to be used in multiple scenarios. Stronger resistance to light pollution. Near IR (NIR) is blocked up to 1100nm. High ability to process the wavelength from 300 to 1100nm. Effectively isolate the light pollution band.

Average Transmittance >90%

Photography All Kinds of Targets
The wavelength can meet the astrophotography needs of most galaxies, reflection nebulae, emission nebula, star clusters, and other broad-spectrum targets. And the targets can be captured in a short time, which is widely used and high efficiency.

If you have different astrophotography systems, no need to prepare dedicated filters; one SV240 can meet your needs due to its high compatibility. Considering the high quantum efficiency (QE) characteristics of the latest cameras (such as IMX585 and IMX464) in the near-infrared region and also this region less susceptible to artificial light pollution, the SV240 multi-narrowband filter adds high transmission in the near-infrared (NIR) band. This spectrum design improves the image signal-to-noise ratio and contrast by capturing signal in visible bands and NIR regions while maintaining good colour balance and being easier to manage in post-processing.

The SV240 astronomical telescope filter efficiently blocks light pollution to capture galaxies, nebulae, and star clusters. Its high compatibility, near-infrared transmission, and multi-wavelength coverage make it ideal for urban settings.

Parameter Comparison

Features
- Cut-off depth ≥OD4; highly efficient in blocking urban light pollution or other background light; use this multi-bandpass filter for astrophotography in urban without traveling long distances to the suburbs;
- Compatible with 99% astrophotography systems; if you have different astrophotography systems, no need to prepare dedicated filters, one SV240 can meet your needs due to its high compatibility;
- Photoing more kinds of targets; SV240 multi-narrowband filter select Ha,OIII,H-Beta wavelength effectively can cover almost photoing needs;
- High transmittance; the >90% transmittance in core wavelength of Ha,OIII, H-Beta, more objects for your astrophotography by using this multi-bandpass filter;
- Multi-bandpass filters; without multiple filters' combination for colorful images; rich color in your lens;
- Resistant of BORTLE 8; the multi-narrowband filters can be resistant from Bortle 1 to Bortle 8 cities, suitable for almost all urban;
- 300-1100 mm working wavelength; the wider coverage of this multi-narrowband filter allows it to have a strong ability to tack light pollution.
Note: Optical filters that use infrared light often cause halos in the NIR region; which are exacerbated by the halos produced by the filter itself.
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Specifications
Brand |
SVBONY |
Model |
SV240 |
Name |
Multi-Narrowband Filter |
Size |
2-inch |
Substrate Thickness |
2mm |
Clear Aperture |
44mm |
Wavelength Range |
300-1100nm |
FWHM |
24nm & 20nm & 115nm |
Blocking |
>OD5@300-450nm;>OD4@560-620nm;>OD2>690-750nm; >OD3@940-1100nm |
Peak Transmittance |
T>95%@486.1nm;T>92%@495.9nm;T>85%@500.7nm;T>95%@656.3nm; Tavg>95%@830-870nm |
Surface Quality |
60/40 |
Surface Parallelism |
1/4λ |
Thread |
M48x0.75 |
Single Thread |
Yes |
Net Weight |
12.5g / 0.44oz /0.027lb |
Shipping & Returns
Order Shipment:
If your order is in stock and we process the charges to your credit card, it will ship within five business days from the date of your order. We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out. If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at shipping@telescopewolves.com.
Cancellations & Refunds:
All orders canceled after 48 hours are subject to a $20 administration fee, whether or not your order has shipped. If your order has shipped, you (the buyer) will also be responsible for actual return shipping charges. Refunds will only be issued to the original credit card that you use when placing your order.
Damages:
Please inspect the packaging of your item(s) when they arrive, if you notice any damage you should make note of it when signing for delivery. If your item(s) do arrive damaged, please send photos to shipping@telescopewolves.com and we will process an insurance claim on your behalf.
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To request your partial refund simply e-mail us a link to the same product on our website, or on our competitors website within six months from the date of your order and we will process the credit accordingly.
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Warranty
Our Promise
We know you'll like the products we offer as much as we do- that's a Telescope Wolves Guarantee. In fact, if for any reason there is an issue with your products, please contact us upon receipt of your order with your order number and concern, and a member of our team will be happy to assist you from there.
Telescope Wolves will be happy to refund you the difference in price:
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Please consult our Price Match Guarantee for further details.
Product Warranty Policies
We also offer warranties from each of our partners (to ensure that you enjoy the products as much as we do).
Vixen's Warranty :
Vixen warranties its products to be free from initial defects in materials and workmanship for a specified period based on part type:
- Vixen Electronic Parts: Limited One Year Warranty
- Vixen Mechanical Parts: Limited Two Year Warranty
Interested? Shop for all of Vixen's products here.
Bresser's Warranty :
Bresser offers a limited USA one year warranty when product is registered within 60 days of purchase. Interested? Shop for all of Bresser's products here.
Explore Scientific's Warranty :
Explore Scientific offers a limited USA one year Warranty, which also converts to the Explore STAR Transferable Extended Life of the Product Warranty. Product must be registered within 60 days of purchase for this warranty to apply.
Interested? Shop for all of Explore Scientific's products here.
Daystar Filters's Warranty:
If used as directed, your DayStar filter is guaranteed for ten years. Should the filter become inoperative due to optical or mechanical failure, Daystar will repair the filter or replace it with an equivalent filter at no repair cost to the customer.
Under no circumstances shall a refund be issued:
- due to application issues or the buyer's lack of skills in application of the product
- Application of the DayStar product requires a degree of technical expertise specific to the exact product line, which is not common to other optical applications
- if the product’s technical application procedures are NOT followed properly and poor results are yielded
- Application procedures are posted on Daystar’s website and are stated in further detail in the client's operation manual
- due to buyer’s remorse
Goods are warranted to be in operative, working condition as stated in specifications of product at the time of delivery. Should the goods not meet these specifications, Telescope Wolves will put a request in on your behalf to repair or replace the goods with items which meet stated specifications of product.
- Goods shipped shall meet specifications stated by means of optical laboratory testing using independently verified spectrometer testing methods, visual inspection, and visual qualification of performance.
Interested? Shop for all of Daystar Filters's products here.
Hutech's Warranty:
Hutech offers a one year warranty on all its products.
Interested? Shop for all of Hutech's products here.
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