Alpine Astronomical Baader 4nm Ultra-Narrowband S-II CMOS Filter (1.25" Eyepiece Filter)

Name: Alpine Astronomical Baader 4nm Ultra-Narrowband S-II CMOS Filter (1.25" Eyepiece Filter)
Brand: Alpine Astronomical
SKU: ALFCSIINU1
Price: 324.00 USD
Availability: InStock

BH #ALFCSIINU1 • MFR #FCSIINU-1

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Alpine Astronomical Baader 4nm Ultra-Narrowband S-II CMOS Filter (1.25" Eyepiece Filter)

In Stock

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$324.00

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Size

1.25" Eyepiece Filter

2" Eyepiece Filter

31mm Round, Unmounted

36mm Round, Unmounted

50x50mm Square, Unmounted

50.4mm Round, Unmounted

65x65mm Square, Unmounted

Bandpass

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Alpine Astronomical Baader 4nm Ultra-Narrowba... Overview

Alpine Astronomical Baader 4nm Ultra-Narrowba... Reviews

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This item is advertised as a "Sodium" filter. ...

This item is advertised as a "Sodium" filter. This is an 4nm narrowband [SII] or "Sulfer II" filter. The atomic symbol of Sodium is Na. Would you mind updating the product listing?

Asked by: Nikko

I have submitted documentation to my web content team for correction.

Answered by: John

Date published: 2022-08-23

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Alpine Astronomical Baader 4nm Ultra-Narrowband S-II CMOS Filter (1.25" Eyepiece Filter)

Alpine Astronomical Baader 4nm Ultra-Narrowba... Overview

Alpine Astronomical Baader 4nm Ultra-Narrowba... Reviews

This item is advertised as a "Sodium" filter. ...

Please update your browser to take advantage of the latest technology security
enhancements to ensure your B&H Shopping experience is as safe as it is enjoyable: