Optolong L-eNhance filter test

Sun, 22 Sep 2019 13:51:06 +0000

Page translated by Claude — switch to Italian to read the original article.

Light pollution: the Nemesis of every urban and suburban amateur astronomer.

Whether you are a visual observer or a photographer, one of the greatest obstacles to your passion is undoubtedly the rampant phenomenon of light pollution.

Narrowband color composition using J-P Metsavainio Tone Map technique in PixInsight 1.8

Fri, 17 Oct 2014 12:24:49 +0000

Leggilo in Italiano

Recently I began to take astronomical pictures in narrow band using my SBIG ST2000XM and a set of Baader Filters (Hα, Hb, OIII and SII).

One of the most famous color composition technique of narrowband data is the Hubble Palette that gives to nebulas a typical golden-turquoise color palette.
In this composition the SII emission is associated to Red, OII to Blue and H alpha to Green.
The drawback of this composition is that, since Hα widely dominates on OIII and SII emission, OIII and SII image histograms should be boosted relative to Hα, this bloats stars and creates weird magenta halos.

Narrowband on L'Arciere Celeste

Optolong L-eNhance filter test

Narrowband color composition using J-P Metsavainio Tone Map technique in PixInsight 1.8