Why Purchase from All-Star Telescope?
Free Expert Support
Whether you are a first timer needing help with setting up or an enthusiast that can't quite make that one thing work, our expert staff are ready to support your needs. With decades of knowledge and first hand experience we've been there and we can help you through it!
Stress Free, Secure Transactions
You can trust purchasing and delivery with All-Star Telescope. All of our transactions are 100% secure and Level 1 PCI DSS compliant thanks to Shopify's ShopPay platform. For additional protection, we insure 100% of the value of every shipment we make. If it get's lost during shipment, we replace it. If it gets damaged during shipment, we replace it. We make sure your product arrives exactly as you would expect it to; we promise.
We also ensure privacy protection. We never keep any of your credit card information on file and any of your personal data is stored according to our policies.
30 Day Return Policy
Buy with confidence knowing that we accept returns up to 30 days after purchase. We want you to have something you will actually use and we are confident that we keep good quality products in our store with No Junk.
Price Match Promise
Shipping around for the best price is tough, we make it easier by offering the best pricing in the market. But if you find a better price on an in-store item somewhere else we will match it!
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Product Description
The Antlia Solar Discover 3nm CaK is an assembly consisting of one set of light reducing filters, designed to maximize imaging contrast of sun spots, solar surface granulation and other features that are prominent in CaK 393.3nm line.
An Antlia 3nm Ultra narrow bandpass filter wavelength centered on Calcium II K-Line 393.3nm is built in. Its high blocking specification of OD5 (0.001%) intends to reduce most solar heat ingress.
Compared to solar Herschel Wedge, the Antlia Solar Discover CaK 3nm assembly features a new tube structure design, 1.25’’ and 2’’ adapters are designed, as well as the addition of light-reducing filters. Installation is similar to the Antlia CaK 3nm Solar Herschel Wedge, with the telescope attached at one end and the camera at the another. The metal tube machined from aircraft aluminum CNN and oxidized. The filters are assembled in a fully closed tube. No stray light can escape from this.
Important Notes
- When you are using a zenith mirror, the ERF filter must be installed in the correct position for safe operation. Please refer to the installation diagram.
- When you are using a telescope with an aperture ＞100mm, you need to use additional light reduction solutions, such as ERF filters，solar safety films, lowering the telescope aperture for safe operation while using Solar Discover 3nm CaK; If without the extra light reduction solution, the Solar Discover 3nm CaK can only used with REFRACTORS up to 100mm aperture.
About Visual Observation
The bandpass of CaK (393.3 nm) is almost invisible to the human eyes, hence, the Antlia Solar Discover 3nm CaK assembly is primarily used for solar imaging and not recommended for visual observation due to the difficulty of many to visually see information that CaK has to offer.
In addition, the IR coating range of our products is slightly different from the ISO 12312-2 Standard for Solar Viewers, please see the following chart and refer to ISO 12312-2 Standard for Solar Viewers (https://eclipse.aas.org/eye-safety/iso12312-2).
For tough technical requirements and safety considerations, we do not recommend Solar Discover 3nm CaK assembly for visual observation. If you need to use the product for visual observation, it is important to ensure that all filters built into the assembly are in good condition for safety. Please contact Antlia if you have any questions
Warranty: 3-years
Disassembly of the assembly is prohibited and voids warranty. Any repair/returns/exchange for this item is not accepted once it has been disassembled.
Imaging Sample Photo:
What's in the Box
Specifications
|
ISO12312-2 Transmittance Requirements |
Antlia Transmittance Requirements (Solar Discover 5Å CaK， Solar Discover 3nm CaK Assembly，Dualband Ha, CaK and CaH filter Assembly，ERF) |
||
|
Requirements |
Value |
Wavelength Range |
Wavelength Range |
|
Tmax% |
0.0032% |
380-780nm |
380-780nm |
|
Tmin% |
0.000061% |
||
|
Tmax%（UVB） |
0.0032% |
280-315nm |
280-315nm |
|
Tmax%（UVA） |
0.0032% |
315-380nm |
315-380nm |
|
Tmax%（IR） |
3% |
780-2000nm |
780-1700nm |
Product Structure Diagram
Product Installation Diagram
