OPTOLONG 1.25″ Filter H-Alpha 7nm SII-CCD 6.5nm OIII-CCD 6.5nm Narrow Band Astronomy Telescope Filters Kit for Deep Sky LD1013AOPTOLONG 1.25″ Filter H-Alpha 7nm SII-CCD 6.5nm OIII-CCD 6.5nm Narrow Band Astronomy Telescope Filters Kit for Deep Sky LD1013AOPTOLONG 1.25″ Filter H-Alpha 7nm SII-CCD 6.5nm OIII-CCD 6.5nm Narrow Band Astronomy Telescope Filters Kit for Deep Sky LD1013AOPTOLONG 1.25″ Filter H-Alpha 7nm SII-CCD 6.5nm OIII-CCD 6.5nm Narrow Band Astronomy Telescope Filters Kit for Deep Sky LD1013AOPTOLONG 1.25″ Filter H-Alpha 7nm SII-CCD 6.5nm OIII-CCD 6.5nm Narrow Band Astronomy Telescope Filters Kit for Deep Sky LD1013AOPTOLONG 1.25″ Filter H-Alpha 7nm SII-CCD 6.5nm OIII-CCD 6.5nm Narrow Band Astronomy Telescope Filters Kit for Deep Sky LD1013A

OPTOLONG 1.25″ Filter H-Alpha 7nm SII-CCD 6.5nm OIII-CCD 6.5nm Narrow Band Astronomy Telescope Filters Kit for Deep Sky LD1013A

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Product Description

OPTOLONG Filter H-Alpha 7nm SII-CCD 6.5nm OIII-CCD 6.5nm Narrow Band Astronomy Telescope Filters Kit for Deep Sky 1.25″ Mounted

  1. Quality Filter Materials:

    1. Schott B260 substrate material from Germany, 2.0mm thick
    2. CNC machined and black anodized aero-metal filter cell that is ultra-thin to provide largest clear aperture; Laser-engraved to prevent fading
    3. Multiple layers of anti-reflection non-cementing coatings applied via electron-beam gun evaporation with Ion-assisted deposition

    Filter Manufacturing Processes and Parameters:

    1. Filter substrate is fine-optically polished to 1/4 wave and <30 parallelism over both surfaces
    2. Surface quality, according to MIL-O-13830, is 60/40
    3. 80% transmission at OIII line 500nm (at SII line 672nm; at H-alpha 656nm)
    4. Infrared wavelength 700-1100nm cut-off
    5. 0.1% transmission Hg at 435nm and 578nm
    6. 0.1% transmission Na at 589nm
    7. High value transmission of pass-band and optical density of off-band is assured through Optolong's planetary rotation system, a homogenous and precise coating procedure
    8. Thin metal cells have a clear aperture of 26mm for 1.25″ filters
    9. Each filter comes with a plastic case with high pressure EVA case lining
      1. These Optolong 1.25″ Filters are made with Schott glass that has been multi-coated with an ion-assisted deposition technology to ensure scratch resistance and stability on the central wavelength, or CWL. The filter cell is made of lightweight, strong metal and is CNC machined, sand-blasted; black anodized, and then laser engraved. The result is a super thin filter cell that will produce a clear aperture of 26mm.
      2. The Optolong H-Alpha 7nm is an extremely narrow emission-line filter that works by allowing a 7nm bandwidth of light, centered on the 656nm wavelength through, and blocking the transmission of contrast-killing light pollution wavelengths. Wavelengths that are responsible for natural light pollution, or skyglow, are drastically reduced, as is artificial light pollution caused by high and low pressure sodium vapor and mercury vapor lights. The result is a high contrast image that reveals the H-alpha line in all its glory.
      3. The Optolong Sulfur II 6.5nm Extra Narrowband Filter transmits a 6.5nm bandwidth of light that is centered at 672nm and drastically reduces other transmissions, including wavelengths of light that are responsible for light pollution (both artificial and natural). Like all Optolong filters that are designated as CCD, this SII filter also blocks infrared wavelengths from 700nm to 1100nm so you don't need a separate IR-Cut filter.
      4. The Optolong Oxygen III 6.5nm Extra Narrowband Filter transmits a 6.5nm bandwidth of light that is centered at 500nm and drastically reduces other transmissions, including wavelengths of light that are responsible for light pollution (both artificial and natural). Like all Optolong filters that are designated as CCD, this OIII also blocks infrared wavelengths from 700nm to 1100nm so you don't need a separate IR-Cut filter.
      5. The Optolong 6.5nm SII filter can be used in conjunction with H-Alpha and OIII filters for false color emission line images like the Hubble Space Telescope.
      6. Please Note: This h-alpha filter is NOT for use on the Sun. To do so could cause irreparable eye damage or blindness. Don't even think about it!

Parcel:

      • OPTOLONG 1.25 inch H-Alpha 7nm Filter
      • OPTOLONG 1.25 inch SII 6.5nm Filter
      • OPTOLONG 1.25 inch OIII 6.5nm Filter
      • Three Sturdy Plastic Cases

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Return

1.We only Accept Return within 30 days .

2.We will pay for the return postage only if the return is a result of our error

3.We use eparcel return for most of our return parcels , the customer will receive a eparcel return label in your mail

4.Just need to print out the label and bring the parcel together to your local post office , the parcel will be sent back on our cost.

5.The customer need to pay for the return postage if it is a no-seller mistake return , For example change of mind on your purchase

6.We will need to deduct the cost on us and refund the balance to you once return parcel is received .

7.We reserve the right to refuse any return from objective reason.

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Item Specifics

Brand Name: 
 Optolong
Type: 
 Monocular
Model Number: 
 OPTOLONG 1.25'' SHO filter
Type: 
 SHO filter
Astronomy Telescope: 
 OPTOLONG 1.25" Filters Kit
Astronomy SHO Filter: 
 filtro optolong
OPTOLONG filter SHO: 
 for astronomy telescope
7nm 6.5nm: 
 Deep Sky 1.25" Mounted
H-Alpha 7nm: 
 SII-CCD 6.5nm
OIII-CCD 6.5nm: 
 Narrow-Band Filters Kt
For telescope binocular: 
 Astronomy telescope
for Astronomy Telescope Eyepiece: 
 Telescopes block filter ccd
telescope eyepiece filters: 
 Monocular telescope filter
optolong Filter Astronomical: 
 Light Pollution Filter
astronomical filter: 
 for Telescope telescopio

SHIPPING AND DELIVERY

We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:
Location *Estimated Shipping Time
United States 10-20 Business days
Canada, Europe 10-20 Business days
Australia, New Zealand 10-30 Business days
Central & South America 15-30 Business days
*This doesn’t include our 2-5 day processing time.

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.

REFUNDS & RETURNS POLICY

Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.

Refunds

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If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.

If you received the wrong item you can request a refund or a reshipment.

If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.

  • Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
  • Your order did not arrive due to exceptional circumstances outside the control of wowbeli (i.e. not cleared by customs, delayed by a natural disaster).
  • Other exceptional circumstances outside the control of wowbeli.com

*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.

Exchanges

If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.

Please do not send your purchase back to us unless we authorise you to do so.

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