- Express delivery within the EU
The Vespera Dual Band Filter is a dual narrowband filter that will significantly improve your photo quality whether you are viewing from an urban or a dark sky environment.
By only allowing light which are very precisely the wavelengths of Hydrogen Alpha (H-alpha) and Oxygen III (O-III), found mainly in deepspace nebulae, the filter will increase the contrast between the object and the sky background. Therefore, using it makes it possible to obtain a higher-quality image, with sharper stars and finer details.
Keep only the essential:
The Dual Band filter has been designed to allow only two particular wavelengths of light to pass through to the Vespera sensor:
- O-III
- H-alpha
Due to the filtered wavelengths, it is particularly effective for photographing nebulae in emission (e.g.: Orion nebula M42, Heart nebula IC 1805 etc.), dark nebulae endowed with hydrogen (e.g.: Horsehead or Elephant's Trunk nebula etc.), planetary nebulae (e.g.: Owl nebula M97, Dumbbell nebula M27 etc.), supernova remnants (e.g.: Veil nebula, Crab Nebula etc.).
For globular clusters (e.g.: Hercules cluster M13, cluster M92...), the selectivity of the Dual Band filter will help you to obtain sharper stars.
A filter specifically researched for Vespera:
The optical quality of the Dual Band filter has been specifically studied by Vaonis engineers to offer use at full aperture, without any impact on the optical diameter of the instrument. The lens ring is equipped with an electronic microchip that allows Vespera to detect the Dual Band filter and automatically adapt its observation and image processing parameters accordingly.
Transmission curve:
The filter features 12nm of bandwidth in each wavelength (O-III = 500.7nm, H-alpha = 656.3nm).
Whats included:
- Vespera Dual Narrowband Filter
REPUBLIC OF IRELAND
Est. Delivery Time:
5 - 10 Working days after dispatch
Standard Tracked Delivery:
Republic of Ireland Nationwide: from €8.95 upwards
Note: The exact shipping charge will depend on the size of your order and will be calculated at the checkout. Some large and bulky Telescopes may also be shipped to you directly from our Manufacturer. This is a special agreement we have with our suppliers to ensure our customers enjoy the cheapest possible shipping rates for large bulky Telescopes.
For some large Telescopes & orders, it may require special handling instructions and in this case you will be asked at the checkout to contact us for a special delivery quotation.
Mainland EUROPE (EU)
Est. Delivery Time:
3 - 5 Working days after dispatch
Standard Tracked Delivery:
Mainland Europe: from €4.95 upwards
Note: The exact shipping charge will depend on the size of your order and will be calculated at the checkout. Some large and bulky Telescopes may also be shipped to you directly from our Manufacturer. This is a special agreement we have with our suppliers to ensure our customers enjoy the cheapest possible shipping rates for large bulky Telescopes.
For some large Telescopes or orders, it may require special handling instructions and in this case you will be asked at the checkout to contact us for a special delivery quotation.
EU Additional Info:
If your country is not listed below please contact us for a specialised quote.
Standard EU Delivery Regions:
Germany, France, Belgium, Poland, Luxembourg, Netherlands, Denmark, Portugal, Spain, Austria, Italy, Poland, Croatia, Malta, Greece, Monaco Norway, Sweden & Switzerland.
NON EU Regions
Est. Delivery Time:
7 - 14 Working days after dispatch
Standard Tracked Delivery:
Non-EU: from €8.95 upwards
Note: The exact shipping charge will depend on the size of your order and will be calculated at the checkout. Some large and bulky Telescopes may also be shipped to you directly from our Manufacturer. This is a special agreement we have with our suppliers to ensure our customers enjoy the cheapest possible shipping rates for large bulky Telescopes.
For some large Telescopes or orders, it may require special handling instructions and you will be asked at the checkout to contact us for a special delivery quotation.
Standard NON-EU Delivery Regions:
United Kingdom, Switzerland & Norway
Note: For Non-EU countries, in some cases additional Tax or Customs Duty fees may apply on delivery. Unfortunately this is outside of our control and this varies between different regions. For questions about Customs & Import fees or to find out if they apply in your region, please refer to your local Tax office for more information.
IMPORTANT: It is essential when placing an order, that you include a valid 'Contact Telephone Number' for the delivery address or for the person receiving the item. This is necessary to avoid potential delays, return delivery costs or problems with your delivery.
Shipping Disclaimer: All of our parcels are sent via a 3rd party registered courier service to ensure safe and prompt delivery. While we endeavor to ensure that all parcels are delivered within the specified time frame, 'Horizon Astronomy' can not be held responsible for delays due to adverse weather conditions or other courier/technical related issues outside of our control.