Stellarvue 50mm Photographic Guide Scope Sale
1 × $89.00 
Optolong L-eNhance Filter – 1.25″ Discount
1 × $88.00 
Astrozap Telrad Heater Cheap
1 × $41.70 Subtotal: $218.70
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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