I tested 3 different Calcium-K filters: which one is worth it? @AZASTROGUY

Uploaded May 2026 | Updated September 2026, 2 hours ago

I test the Baader CaK filter, the Lunt B1800 CaK module, and the Solar Spectrum CK-18 Cak etalon. Example images and pros and cons of each are discussed.

☀️ TAKE YOUR SOLAR OBSERVING TO THE NEXT LEVEL
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Agena Astro: bit.ly/3qfWaZS
Highpoint Scientific: bit.ly/4p7f7HA
Lunt solar products: luntsolarsystems.com/?rfsn=8727310.7de84a

I tested 3 different Calcium-K filters: which one is worth it?

$azastroguys best solar images of 2025 Short clip of my best solar photos and time lapse videos from 2025. All time lapse videos and solar images were captured and processed by me. Music by Suno AI. ☀️ TAKE YOUR SOLAR OBSERVING TO THE NEXT LEVEL The Solar Observer’s Handbook is my comprehensive, critically acclaimed guide to viewing, capturing, and processing the Sun. 📖 Available now in softcover, personally signed softcover, and PDF: 👉 https://www.azastroguy.com/solar-handbook Check out my YouTube channel videos on how to buy your first solar telescope or any of my other more advanced tutorials on solar imaging. If you found this video of interest, and are considering investing in a solar telescope or equipment, I would appreciate you using one of my affiliate links. If you make a qualifying purchase it will cost you nothing, but I will receive a small commission. Thanks! Agena Astro: https://bit.ly/3qfWaZS Highpoint Scientific: https://bit.ly/4p7f7HA Lunt solar products: https://luntsolarsystems.com/?rfsn=8727310.7de84a For Player One cameras and filters, I recommend AstroWorldTelescopes: https://astroworldtelescopes.com?sca_ref=11939575.K06rkut1Vo Want to buy me a coffee? Its appreciated! https://buymeacoffee.com/azastroguy I used the following equipment: TEC160FL refractor Lunt100MT universal telescope Lunt 40 Ha telescope ML Astro Spectroheliograph Broadband, hydrogen alpha, Calcium K and Energy rejection filters Baader 4x Telecentric and Televue 2.5x powermate Player One Apollo-M, Saturn SQR-M, Neptune-M and Touptec 678M cameras Software: Sharpcap Pro, Autostakkert, ImPPG, Affinity Photo 2, PIPP, Topaz #sun #solarimaging #astrophotography$

Barlow, Powermate or Telecentric? Which to choose?

What I imaged with my Lunt 100MT in just 20 hours

Time Lapse on the Sun July 20 2023 Lunt100MT Universal Telescope

$The Ultimate Guide to Broadband Solar Telescopes, Filters, Observing and Imaging This video is everything I wish I had when I started white-light solar observing and imaging. We cover what you can expect to see, solar safety, broadband vs. contrast filters, capture techniques, telescopes, cameras, and more! ☀️ TAKE YOUR SOLAR OBSERVING TO THE NEXT LEVEL The Solar Observer’s Handbook is my comprehensive, critically acclaimed guide to viewing, capturing, and processing the Sun. 📖 Available now in softcover, personally signed softcover, and PDF: 👉 https://www.azastroguy.com/solar-handbook ⏱️ CHAPTERS 00:00 - Introduction & What you can see 01:53 - Safety First 03:03 - Herschel Wedges, film vs glass broadband filters 04:44 - Refractors for solar 06:29 Contrast Filters and why you need one (540nm Continuum & 430nm G-Band) 08:20 Comparing 540nm images to 430nm images 09:18 Seeing: how to optimize where and when to observe and image 10:25 Barlows, Powermates and Telecentrics: how to choose? 10:56 Binoviewers for solar 11:22 How to choose Broadband cameras for solar 12:02 Lucky imaging 12:20 Specific solar camera recommendations 12:58 Conclusions, telescope and filter recommendations 🔔 SUBSCRIBE & JOIN THE CHANNEL Subscribe for more solar time-lapses, tutorials, equipment discussions, and deep dives into our nearest star! ⭐ Become a YouTube Member for exclusive perks: • Early access to new videos • Live demonstrations & Q&A • Discounts & preferred consideration for new content topics 👉 Click the Join button above to support the channel! 🔭 SOLAR EQUIPMENT LINKS If you are considering buying a solar telescope or astronomy gear, using my affiliate links below supports this channel at no extra cost to you. I may receive a small commission from qualifying purchases: • Agena Astro: https://bit.ly/3qfWaZS • High Point Scientific: https://bit.ly/4p7f7HA • Lunt Solar Systems: https://luntsolarsystems.com/?rfsn=8727310.7de84a For Player One cameras and filters, I recommend AstroWorldTelescopes: https://astroworldtelescopes.com?sca_ref=11939575.K06rkut1Vo ☕ SUPPORT EDUCATIONAL CONTENT Buy Me a Coffee: https://buymeacoffee.com/azastroguy #SolarAstronomy #SolarImaging #Astrophotography #Telescope #Sun$

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I tested 3 different Calcium-K filters: which one is worth it?