This 47.4mm round Baader 6.5nm f/2.0 O-III Highspeed CMOS Filter from Alpine Astronomical is recommended for extremely fast optical systems from f/3.4 to 1.8, and is designed for the special filter requirements of fast optics like Celestron RASA astrographs. This filter is unmounted for use in the Baader FCCT (Filter Changer Camera Tilter). The filter features a Reflex-Blocker hard coating, which has been planoptically polished, and has Life-Coat sealed edges. It is equally suitable for modern CMOS sensors as well as for older CCD camera technologies.

Optimized for CMOS, Suitable for CCD    Reflex-Blocker Hard Coated    Life-Coat Sealed Coating Edges

• 6.5 nm FWHM, recommended for extremely fast optical systems from f/3.4 to f/1.8
• Specially designed for the special filter requirements when used with fast optics like the Celestron RASA astrographs
• Reflex-Blocker hard coated and planoptically polished with sealed coating edges (Life-Coat)
• Blackened edges all around, with filter-lead-side indicator in the form of a black frontside outer rim
• Optimized for modern CMOS cameras, but excellent for CCD camera technologies

Related Questions and Answers

Q: 1. I want to upgrade my laptop from my current mSATA SSD to this m.2 SSD, Will this work in a mSATA socket?

A: Hello,The answer is no, because mSATA SSD and M.2 SSD use different sockets, unless the motherboard has a M.2 SSD socketThank you

Q: 2. This adapter differs from the Ricoh GA-1 adapter for the GRIII GW-4 wide lens in that it has none of the electronic contacts. How does that affect the connection between GRIII camera body and GW-4 lens?

A: Though there are no electronic contacts in this adapter, it still enables you to use the wide lens attachment for the GRIII without any issues.

Q: 3. Will the LOCKCIRCLE LockPort adapter baseplate work with a Manfrotto 410PL Quick Release Plate?

A: According to Lockcircle, this plate will work with any quick release plate on the market.

Q: 4. Does this include a silver lens ring as shown in the pictures?

A: Yes it includes the adaptor and silver lens ring.

Q: 5. I already own the NiSi starter filter set for GRIII, will this adapter allow me to screw filter holder onto it?

A: This adapter is for the NiSI holder for the Ricoh GR III or a screw in 49mm filter.

Q: 6. Does this work with GR 3x?

A: Yes, Will allow an end-user to adapt the lens of a GR III camera to accept the NiSi 49mm filter holder or conventional 49mm filters.

Q: 7. can this filter be used to view the flame and horse head nebula too and does it help viewing galaxies..??

A: So we really do not recommend using this filter for this purpose. It is more for Imaging, and it will reduce what you are seeing. I honestly don't recommend using a filter at all with looking at what you are going to view. However if you did want to get a filter then I would go with the Celestron UHC (Ultra High Contrast) LPR Filter (1.25 ) - Reduces Transmission of Wavelengths of Artificially-Produced Light. Website link: http://bhpho.to/1Luj0jC

Q: 8. Does Nisi adapter hold a regular 49mm UV filter?

A: Yes, the NiSi Filter Adapter for Ricoh GR III (49mm) would allow you to connect a 49mm circular filter to the Ricoh GR III Digital Camera.

Q: 9. Can you still use macro mode with this on the camera? I’ve seen some people saying it might cause an error…

A: Yes, the NiSi Filter Adapter for Ricoh GR III (49mm) can be used while the Ricoh GR III Digital Camera is in macro mode.

Q: 10. Low Profile Bracket included with this controller?

A: This comes with a low profile bracket.