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Antlia Solar Discover 3nm CaK

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#1 LYAstro

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Posted 31 January 2024 - 12:55 AM

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. 

3nm CaK-2.jpg
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%)@200-1200nm wavelengths intends to reduce solar heat ingress.

 

Compared to solar Herschel Wedge, the Antlia Solar Discover CaK 3nm assembly features a new tube structure design, 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.

It should be noted that the bandpass for Cak (393.3nm) makes solar features almost invisible to human vision because of the eye's low sensitivity at the CaK frequency. Hence, the Antlia Solar Discover 3nm CaK assembly is not recommended for visual observation.

 

Product Structure Diagram

3nm CaK size.jpg

 

Product Installation Diagram
If you need to use a zenith mirror in your solar imaging system,  the ERF filter must be installed, as shown on Installation Diagram.

2024 3nm CaK.jpg

 

Important Notes
-Disassembly of the assembly is prohibited and voids warranty. Any repair/returns/exchange
for this item is not accepted once it has been disassembled.
- Never use the Antlia Solar Discover 3nm CaK assembly by itself for observing solar, otherwise irreparable eye damage will result.
- Only for use with REFRACTORS up to 100mm aperture

 

Facebook:Antlia Astronomy Filter

 

Email:sales@antliafilter.com


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#2 LYAstro

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Posted 31 January 2024 - 01:13 AM

Antlia Solar Discover Series

Antlia Solar.jpg



#3 George Ionas

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Posted 08 February 2024 - 08:43 PM

When will the Solar Discover 3nm CaK be at the retailers? None seen yet.

 

George


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#4 dtripz

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Posted 15 February 2024 - 12:29 PM

When are the Ha units coming for sale?



#5 LYAstro

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Posted 15 February 2024 - 08:54 PM

When will the Solar Discover 3nm CaK be at the retailers? None seen yet.

 

George

Already in stock, please wait patiently.



#6 LYAstro

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Posted 15 February 2024 - 09:01 PM

When are the Ha units coming for sale?

No Ha unit, but another new one is coming soon, Antlia Solar Discover CaK 5Å(FWHM 0.5nm)

 

DSC_3908.JPG



#7 LYAstro

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Posted 16 April 2024 - 06:09 AM

Antlia Solar Discover Series Comparison:

Antlia Solar.jpg

skyrover 72ed
Apollo-M mini IMX429
Antlia 5Å CaK(FWHM 0.5nm)
Antlia 3nm CaK Assembly
Antlia dualband Assembly


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#8 nicknacknock

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Posted 17 April 2024 - 11:44 PM

Yesterday's sun with Antlia 3nm. Due to heavy compression, not displaying the full potential of the filter. But it is an excellent photospheric filter!

Attached Thumbnails

  • 393.6 Antlia.jpg

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#9 LYAstro

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Posted 18 April 2024 - 12:07 AM

Yesterday's sun with Antlia 3nm. Due to heavy compression, not displaying the full potential of the filter. But it is an excellent photospheric filter!

Thank you for your sharing!



#10 nicknacknock

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Posted 18 April 2024 - 01:41 AM

Not so good conditions today, but here's today's effort with the 3nm filter.

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  • 2024.04.18 Antlia CaK 3nm.jpg

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#11 davidpitre

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Posted 10 June 2024 - 06:04 PM

For anyone who’s interested, These are currently not available in the United States.
I contacted Antlia who said that only Agena Astro is carrying them. Agena said they hope to be caring a full line of products from Antlia by the end of June. They would not tell me whether they will be stocking the 3nm Calcium K “Discover”.


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