Chroma 1.25″ H-alpha 3nm Telescope Filter Supply
1 × $97.00 
PrimaLuceLab C120 Pier EQ8 Adapter Hot on Sale
1 × $86.00 
Orion 2.32″ ID E-Series Safety Film Solar Filter Online now
1 × $26.99 
Atik 460EX Cooled Monochrome CCD Camera Sale
1 × $86.00 Subtotal: $295.99
Atik Narrowband 1.25″ Filter Kit
The Atik narrow band filters are manufactured with a band pass of 7nm, capturing a nebula’s photons while preventing a large portion of the broad band light pollution from entering. The result is a much higher signal to noise revealing faint details in nebulas. The Narrow band filter set comprises of Hydrogen-Alpha (Ha), Sulphur (SII) and Oxygen (OIII).
| Filter | Peak Transmission | Half Width | Transmission in Band | Transmission out of Band |
| Hydrogen Alpha | 656.3nm | 7nm | >80% | Maximum＜0.3% Average 0.1% |
| Oxygen III | 500.7nm | 7nm | >80% | Maximum＜0.3% Average 0.1% |
| Sulphur II | 671.6nm | 7nm | >80% | Maximum＜0.3% Average 0.1% |
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