Computer Monitor Eye Filter

Alpine Astronomical Baader 3.0 Neutral Density Filter (1.25")

Product Code: ga56683
Availability: In Stock

$147.00 $189.63

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Description
Reviews (2)

Use the Alpine Astronomical Baader 3.0 Neutral Density Filter to reduce the amount of light coming into your eye during lunar observation and improve the view and contrast. The lens surfaces are fully multi-coated with Phantom Group seven-layer optical coatings. This maximizes light transmission across the entire visual spectrum, stepping down the light throughput while maintaining color-neutral views without reflections, ghosting, or stray interference light.

Its housing is made to fit most 1.25" eyepieces and has female threads for stacking it with other ND and colored filters to further improve views when observing planets and other objects. This iteration of the ND filter line has an optical density of 3.0, with 0.1% transmission and a reduction factor of 1000—making it ideal for viewing and photographing the moon when it's full and very bright.

The filter can also improve solar viewing, but only as a secondary pre-filter stacked with a primary dedicated solar filter. Failure to use a dedicated solar filter may result in permanent eye damage up to and including blindness.

Ideal for Lunar Observation Phantom Group Optical Coatings Fits 1.25" Eyepieces and Accessories 3.0 Optical Density 0.1% Transmission 1000 Reduction Factor Stackable with Colored and ND Filters

Parameters
Item Type	1x Neutral Density / Moon Filter
Filter Eyepiece Size	1.25"
Density	3.0
Transmission	0.1%
Coating	Multi-Coating
Weight	2.1 oz / 59 g
Packaging Info
Package Weight	0.14 lb
Box Dimensions (LxWxH)	3.6 x 3.1 x 1.15"

Related Questions and Answers

Q: 1. Is it 7mm or 10mm optical length?

A: Optical Path Length: 0.35-0.94" / 9.0-24.0 mm.

Q: 2. what does focal length of 21mm eyepiece become when the snout is removed?

A: The Alpine Astronomical Baader Hyperion 68° 21mm Astronomical Eyepiece (1.25"/2") would become 32.2mm with the snout removed.

Q: 3. What items are in the box?

A: The Alpine Astronomical Baader 2x Carl Zeiss Abbe Barlow Lens (1.25") BH #ALZBARLOW • MFR #ZBARLOW comes with the Alpine Astronomical Baader 1.25"/T-2 Click-Lock Eyepiece Holder Adapter BH #ALT208 • MFR #T2-08 and a 2 year aarranty.

Q: 4. How can we adapt the 2" UV bandpass filter to a Sony E-mount 49mm lens?

A: I know of no adapter to mount a 2" (50.8mm) filter on to a 49mm opening. I do know some that use gaffing tape.

Q: 5. It says you can remove the smaller nosepiece to use the 2" barrel. But it changes the focal length. To what?

A: This is the only information being offered by Alpine Astronomical https://alpineastro.com/products/baader-13mm-hyperion-68-modular-eyepiece#description

Q: 6. Is this a #8 Yellow?

A: No it is not. A Yellow #8 is typically used for an increase in contrast with black and white films. The Alpine Astronomical Baader Yellow Colored Bandpass Eyepiece Filter is centered on the 495nm wavelength suppresses the secondary blue spectrum when using achromatic and half-apochromatic refractor telescopes, increasing image sharpness.

Q: 7. What accessories would I need to mount my Nikon F-mount DSLR to this eyepiece to shoot through it?

A: A T-mount adapter; BH# VELANFT. And depending on sensor size, some combination of extension tubes from the Alpine Astro T2 System for full coverage; BH# ALT225A .

Q: 8. This zoom eyepiece is 3 times the price of Celestron's zoom. Is it worth that difference in cost?

A: It has much higher optical quality due to the -Phantom Coating Group Multi-Coatings and 7-Element/4-Group Flat-Field Lens Design

Q: 9. Is it parfocal with other Alpine Hyperion eye pieces?

A: This is the only additional information B&H has on the Alpine Astronomical Baader 72° Hyperion 36mm Aspheric Eyepiece (1.25"/2") https://alpineastro.com/products/baader-36mm-hyperion-aspheric-2-eyepiece And yes to the compatibility with other eyepieces

Q: 10. Can I use the Baader 76 degree Morpheus 4.5 mm eyepiece in the Celestron Regal M2 100ED spotting scope I have ordered from B&H?

A: It probably wont work properly because its too magnified. The Spotting scope is too short a focal length, I would recommend a 12 mm & higher.

Richard	16/08/2024
After using screw in filters for years, this new magnetic filter set from Kase is fantastic. Why? For example... you are standing at Glacier Point in Yosemite and your camera is setup and hanging over the edge and it's windy and cold. After you are all setup, you realize you need your polarizer and neutral density filters. Who wants to fiddle with trying to screw in filters wearing gloves. You're going to miss the shot, or the filter is going to slip and fall into the valley. Not only did I get this set, but I purchased Kase filter rings for my esoteric (IR) filters to use on this Kase system. 5

Alin	21/04/2024
For anybody looking into this system and having the Nikon Z 14-30 F4, i bought the 82 mm Kase Wolverine magnetic set. Conclusions: - i can't see any vignette with just the CPL at 14mm. If it's there (i was struggling to see any) just a very slight amount of zoom (like 14.2 -14.3 mm ) will make it 100% certain gone. But, like i said, i can't see any at all. - CPL + ND stacked, there is a small amount of vignette at 14mm, completely gone at 16mm - i didn't tried 3 filters stacked as i hardly need to do it, CPL alone or stacked with a 3,6 or 10 stops it's enough. I assume vignetting will be more this way (3 filters stacked) and you have to zoom in past 16mm (defeating the purpose of a ultra wide angle lens) - on the 14-30 F4 lens the 82mm adapter ring fits like a glove allowing for the original filter hood to be used. The original Nikon lens cap works, stays put but it's not flushed with the barrel because of the adapter ring. - on the Nikon Z 24-120 F4 (77mm) lens you can't use the lens hood and original lens cap when the step-up ring (77-82) is screwed on. - on the Nikon Z 100-400 F4.5-5.6 (77mm) the lens hood it's working perfectly with the step-up ring (77-82) attached. The original lens cap doesn't work. I was surprised to see this: the step up ring sits exactly flushed to the lens barrel (cool) At this point i don't think going for much more expensive 95 mm set it's worth it. I can live with 16mm when i need to stack 2 filters . It's better to purchase the integrated 82mm CPL + ND from Kase and then the vignette it's gone at 14mm with the 2-in-1 filter. Overall, this is the best filter set I tried so far. It's really high quality. 5