Proms And Filament

Proms and Filament
Taken by jp-brahic on August 4, 2016 @ uzès ( France)

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Date Taken: 2016:08:05 10:05:38

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Details:

Proms ( Aug 04th ) Réfractor 230mm Special H-Alpha, PST MOD 0.25A°, Genika Astro , Ech : 0.14"/ Pix Seeing 6/10

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Comments

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Most of the Standards Etalon PST have a bandwidth between 1 and 0.9 In A°, some rare models as mine have a bandwidth below 0.3A °

JP

Posted by jp-brahic 2016-08-05 11:36:12

this is not .25 angstroms. Closer to >.75a based on the gaussive fillaments.

Posted by amplelight 2016-08-05 07:48:56

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