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Filters Used with NV

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#1 GeezerGazer

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Posted 13 March 2019 - 12:54 PM

Filters used with NV

 

The use of certain Longpass IR filters provide improved NV performance under high levels of light pollution.  The use of certain Passband H-a filters provide improved NV performance on astro subjects emitting Hydrogen-Alpha light, such as emission nebulae.  

 

 

CN article, “Collins I3 “System” by Lynden, discusses the use of H-a filters w/NV, 2007

https://www.cloudyni...i3-system-r1602

 

CN thread discussion, “PVS-7 NV goggle filter candidates” by The Ardent, reveals a long list of filters that do or do not perform well with NV, 2015

https://www.cloudyni...tes/?hl= filter +candidates

 

CN thread user report, “NV w/5nm and 12nm H-a Filters” by cnoct, with photos and discussion, 2016

https://www.cloudyni...nm-h-a-filters/

 

CN Article, “A Subjective Comparison of 5nm and 7nm H-a Filters for NV” by shams42 and GeezerGazer 2018

https://www.cloudyni...astronomy-r3135

 

CN thread discussion, “H-a filters with NV - how narrow can you go?” by Gavster 2018

https://www.cloudyni...row-can-you-go/

 

CN thread user report & discussion, “NV filter comparison… Chroma 5nm vs Astronomik 6nm H-a” by alanjgreen 2018

https://www.cloudyni...ronomik-6nm-ha/

 

CN thread user report, “Big Dob…Chroma 5nm H-a Filter (NV)” by alanjgreen 2019

https://www.cloudyni...r-night-vision/

 

CN thread user report & filter discussion, “New to NV astronomy: first impressions with a PVS-7, by DMala 2018

https://www.cloudyni...s-with-a-pvs-7/

 

CN thread user report, “NV: Tips for Viewing Globular Clusters” by chemisted, discusses IR light rejection by dielectric coatings in diagonals 2017

https://www.cloudyni...bular-clusters/

 

CN thread discussion, “Collins Electro I3 Piece” posts 5 & 7 discuss IR filtration results including dielectric diagonal coatings rejecting IR wavelengths 2006

https://www.cloudyni...ectro-i3-piece/


 


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