Designed for capturing pictures of the sun, the Alpine Astronomical Baader Calcium Gen-II Unstacked Ca-K Solar Imaging Filter with LPFC has standard filter threads that fit onto conventional 1.25" eyepieces for astrophotography imaging systems and accessories to improve resolution and reveal solar features. Its enhanced contrast is matched to the quantum efficiency and s/n ratio of typical CMOS cameras. In addition to structures known from white light, such as sunspots, you can see the chromospheric network distributed over the entire surface of the sun, which precedes the formation of sunspots, as well as cells of super-granulation and Ellerman Bombs. The Calcium Gen-II Unstacked Ca-K Solar Imaging Filter is mounted in a 6mm low profile filter cell.

An additional solar filter is required for use of this calcium filter. It's for this that Alpine Astro includes a 7.8 x 11.8" sheet of Baader AstroSolar neutral density 3.8 photo film. This material can be mounted on most telescopes using the online instructions for fabricating your own filter housing, located on the Alpine Astronomical website. Standard ERFs may also be used, including Alpine's Baader Safety Herschel Prism.

For Solar Imaging in Calcium K-Line    Shows Super-Granulation & Ellerman Bombs    5nm-Wide Bandpass, Centered at 395nm    Reflex-Blocker Hard Coated    CMOS Optimized    Front Energy Rejection Filter Required    8 x 12" AstroSolar Photo Film Included    Not Safe for Visual Solar Observation

• This filter is intended for imaging purposes ONLY. It should not be used for visual observation as there is no ultraviolet (UV) radiation blocking and severe eye damage can result.

Related Questions and Answers

Q: 1. hello there ,do this adapter work with 4000D!?

A: Yes, this adapter with the correct coupler will power the new 4000D. Here are the two together. Canon ACK-E10 AC Adapter and DC Coupler Kit B&H # CAACKE10K (B&H Kit)

Q: 2. Would this pack accommodate an attached 1dx and mounted 2x extender on a 600 mm canon lens?

A: I think so. It yolds my Nikon body with 600mm and 1.4 TC with room to spare. Nice bag!

Q: 3. This is ORIGINAL from Canon? Made by Canon? Thanks

A: Yes. This is made and distributed by Canon USA

Q: 4. What is size of DC tip? (looks like 3.0x1mm)

A: This product offers a DC connection that specifically works with select Canon DC Couplers. It will only work with these products, which is why the size of the barrel is not listed. Compatible couplers: DR-E5, DR-E8, DR-E10, DR-E12 and DR-E15.

Q: 5. Will this work on the c500 Mark 2? If not, what power supply should I use?

A: The Canon CA-A10 is not compatible with the C500 Mark II. You will need to an XLR power supply from this link: https://bhpho.to/3cgwMft

Q: 6. Hi...Side pocket size is enough to carry Wimbley Gimble head?

A: No, I don't have one, but the ones I have seen (heads) have been large. The pockets are ample in shapebut don't expand much. I love this backpack. So light.

Q: 7. Which battery do i need to work with the Canon M50?

A: You need the DRE12 dc coupler. Click on the link below to view; https://bhpho.to/2uI7hgZ

Q: 8. Would this work for a Canon C70 camera?

A: No, the Canon AC Adapter CA-PS700 will not power the Canon EOS C70 Cinema Camera (RF Mount) but the Canon CA-CP200L Compact AC Power Adapter will.

Q: 9. Is the bag as good as the Lowepro 600 mm bag? This bag is much cheaper, so I am not sure if it is as well made or not.

A: I'm not familiar with the other bag, so i can't compare. I just got this bag because i bought a 500mm lens and it seems to be a good quality bag.

Q: 10. Specs says weight is 6.0 lb but package weight is 5.6 lb. Kindly clarify what is the actual empty weight? Thanks!

A: The empty weight of this back is 5.6 lbs.