Baader 6.5Nm H-Alpha Cmos Filter 50X50Mm Unmounted

Baader 6.5nm H-alpha Cmos Filter 50x50mm Unmounted

Product Code: eq91700
Availability: In Stock

$1,047.00 $1,402.98

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Description
Reviews (13)

This 50 x 50mm square, unmounted Baader 6.5nm H-Alpha CMOS Filter 50x50mm Unmountedfrom Baader 6.5nm H-Alpha CMOS Filter 50x50mm Unmountedis 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. The filter features a Reflex-Blocker hard coating, which has been planeoptically polished, and has Life-Coat sealed edges. It is equally suitable for use with modern CMOS sensors as for older CCD camera technologies.

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

Parameters
Size	50 x 50mm Square, Unmounted

6.5nm FWHM, recommended for extremely fast optical systems from f/3.4 to 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. Can I add 2mm or 4mm filter guides to the filter holder like the LEE Filters holder?

A: The NiSi V7 Alpha 100mm Aluminum Filter Holder does not have optional guides to change the filter thickness.

Q: 2. I have the Celestron Eclipsmart 8" Solar Filter for my 8" SCT. Is it enough or I still need to buy an Energy Reduction filter?

A: In solar viewing, solar filters are for viewing the photosphere of the sun. The H-Alpha Eyepiece Solar Filter is for viewing the chromosphere of the sun.

Q: 3. does this model fits 100x150mm ND filter? thanks

A: Yes, NiSi V7 Alpha 100mm Aluminum Filter Holder is compatible with 100x150mm 2mm thick filters.

Q: 4. I Have An F7 102mm Triplet Refractor From Explore Scientific, If I Purchase This HA Solar Filter What Else Would I Need To Purchase

A: The DayStar Filters QUARK H-Alpha Eyepiece Solar Filter inserts into 1.25" or 2" diagonals and accepts 1.25" eyepieces. I recommend using UV/IR cut filters. Follow this link https://bit.ly/3UpqtKg if you are using a diagonal, or https://bit.ly/494r2gU if you are not. The following energy rejection filter is also recommended for optical tube assemblies over 80mm. https://bit.ly/3vYBecc

Q: 5. Can I use this with newtonian telescope using off axis reduction?

A: For the DayStar Filters QUARK H-Alpha Eyepiece Solar Filter (Chromosphere) BH #DADSZ4C • MFR #DSZ4C simply inserts into 1.25" or 2" diagonals and accepts 1.25" eyepieces.

Q: 6. Does this fit the a7c?

A: The Kase Multicoated UV Clip-In Filter for Sony Alpha Cameras is not compatible with the Sony a7C camera.

Q: 7. the sony sensor filter stack has two separate filters. One is a clip frame, the other is glued on. Should we remove both?

A: The glued filter is the actual IR filter, I believe, but you need to contact Sony for confirmation--they don't have much information available about that.

Q: 8. can I insert a filter with 4mm thickness to this holder?

A: No, the NiSi V7 Alpha 100mm Aluminum Filter Holder only supports 2MM thick filters.

Q: 9. Is there any noticeable color casting with this filter?

A: The Hoya alpha II Circular Polarizer Filter doesn't have any noticeable color casting.

Q: 10. Can you use the CPL from the Nisi v5 pro kit with the newer v7 filter holder?

A: No, the older CPL for the V5 holder does not fit the new V7 holder.

Joanne B	18/09/2024
What can I say about an air filter. It appears to be quality made, 5

Harrison	29/08/2024
I bought this to see if it would help bring out some color and detail for my astrophotography. I have little light pollution in my area but it this thing really does what it's supposed to. I did some test shots with a colorchecker passport in regular daylight and the difference is definitely noticeable. There's a very clear boost in color and slight boost in contrast, what I mean is that they appear more clearly and saturated. It's magic! I might even start using this for some regular photography too! I have to use step-down adapters to fit these onto my lenses as I am not using it with a telescope (67mm, 58mm, 52mm). I just wish they made these in sizes native to DSLR/Mirrorless lenses! Highly recommend! Also if you are someone purchasing for a DSLR/Mirrorless camera, Get the 2 version of course, and you will need step-down/step-up adapters to 48mm. Even though 2 is not 48mm, that is the threads for this baader filter. I recommend the sensei filter adapters, cheap and very well made. In order to adapt some lens sizes down to 48mm, you might have to buy a couple adapters and stack them. I had to do this for my larger 67mm lenses. There will of course be vignetting when doing this, but its no big deal to me. 5

Javier	19/08/2024
Excellent filter 5

Michael	06/08/2024
There is no better narrowband green filter for astronomical observations and photography. I have been observing since 1974 and this filter has turned my achromatic refractor into an apochromat. Viewing on the Moon cannot be sharper eliminating chromatic aberration by using one wavelength of color and then converting to black and white monochrome. Baader's reputation exceeds itself. 5

Adam	03/08/2024
Very nice. Could use one more thread though. Seems a little short on threading when trying to attach and remove while making lens changes in the dark. Makes me a little nervous sometimes that I will drop it during removal from the lens. Good quality though and I like having it around. 5

John	23/06/2024
Nice to have a filter that works great with my Baader eyepiece. 5

Mike	09/06/2024
Finally got to use this for the first time last weekend on Jupiter. Provided nice, sharp images to combine with my Baader RGB filters 5

John	14/05/2024
I live in heavily light polluted skies, yet I can go out in the backyard and look up at the billowing clouds of the milky way. I can actually see meteorite showers when they are happening. This is all possible by using this filter in conjunction with a Gen3 night vision device. This filter blocks out all light below 685nm which is basically all the man made light pollution leaving mostly celestial light for your enjoyment. This does cut out hydrogen alpha light, so you will not be seeing nebulae with this, but a separate band pass filter is used for that purpose. 5

William	24/04/2024
One of the best items I've purchased for my 140mm telescope. The reduction in sky glow and the contrast improvement add to those Oh, Wow! moments of star gazing. 5

Carlo	22/04/2024
They work quite well; no halos or any undesirable behavior which I could notice as of now. They did require an increase in exposure time, but that's expected. 5