Description
This filter is available in 1.25″ (BPSC125-7.5) or 2″ (BPSC2-7.5) sizes.
- Baader 1.25″ Solar Continuum Filter, 7.5nm / CWL 540nm
- A must for owners of achromatic refractors. This filter cuts the spectral range transmitting a specific spectral range around 540nm, completely cutting out blue and red wavelengths in an area of the lens system that where the optics are at their sharpest.
- Enhances contrast and reduces the effect of atmospheric turbulence.
- This filter must be used in conjunction with a Baader Herschel Wedge or Baader AstroSolar Safety Film for solar observations otherwise eye or equipment damage may occur.
- Planeoptically polished, non-ageing sealed coating edges.
Unsurpassed contrast of photospheric details is achieved by an extremely narrow half bandwidth of only 8nm. Functions like a monochrometer, suppressing the effects of atmospheric turbulence to provide images that appear markedly more stable.
Focus “Sweet Spot Generator” – completely eliminates the usual focusing guesswork – the image snaps to a razor sharp focus at the exact focal position. Image the sun the way professionals do!
VERY IMPORTANT: The Solar Continuum Filter MUST be used in conjunction with a visual density white-light solar filter or Herschel Prism (with ND3.0 filter) in front of the lens. We suggest AstroSolar ND 5.0 Visual Filter material, also from Baader Planetarium. If you prefer a ready-made filter, we suggest the Baader Planetarium ASSF, ASTF or ASBP solar filters or Kendrick solar filters, also constructed with AstroSolar Safety Film. DO NOT attempt to use this filter without a white-light filter in front of your main telescope optics. Serious damage to your eyes could result.
Transmission Curve
Spectral Position By Color
| Size | 1.25", 2" |
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Fast Shipping and Professional Packaging
Due to our longstanding partnership with UPS FedEx DHL as well as other major international carriers, we are able to provide various shipping options. Our warehouse personnel will pack each item according to our strict requirements. Before they are shipped, your goods will be thoroughly examined and secured. Everyday, we send to thousands of clients in different countries. This is a sign of our determination to become the largest online retailer globally. The warehouses and centers for distribution are in Europe, as well as the USA.
Note that orders containing more than one item will be processed according to the specific item.
Before shipping before shipping, we'll inspect thoroughly the items you've purchased. Most orders are delivered within 48 hours. The estimated delivery time is between 3 and 7 days.
Returns
The inventory is always changing and we do not fully manage it because of the fact that many parties are involved, including our warehouse and factory. Therefore, the actual inventory could change at any time. It's possible that your order will be unable to fill when you have placed the order.
Our policy is valid for 30 days. If 30 days have gone without a trace since the purchase and we are unable to offer an exchange or refund.
In order for your item to be returned it must be in its original packaging, unopened and in the same condition as when you received it in. It must also be in its original packaging.
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