Review on Astromania H-Alpha Night Sky Filter - Ideal for Enhancing Astronomical Observations - 1.25" Size by Josh Cooper
H-Alpha is more like H-Omega, everything you see is dark and no nebula
Pretty useless filter, like Alstar, which I also have. And returned. Those cheap poops are all worthless and compared to the Orion 1.25" Ha Extra Narrow Band it's just a waste of money. Save a dime, buy something else, not cheap (and useless) crap, because cheap and useful crap exists just not that ha
- The filter is used as an extreme filter against light pollution and for contrast enhancement of emission nebulae and other astronomical objects that are bright in the infrared range. .
- New competitors have appeared
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