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High-Precision Worm Gears: Advanced manufacturing technologies reduce worm gear errors
preserve delicate gradients and maintain colour information within bright stars
it's an excellent choice for both beginners and professionals
25" O-III Narrowband Filter
Exposure range: 32µs - 2000s
EXPLORE SCIENTIFIC H-Alpha Filters Size:Explore Scientific 2" H-Alpha Filter 12nm High-Precision Worm Gears: Advanced manufacturingThe EXPLORE SCIENTIFIC H Alpha filter allows photography of red glowing emission nebulae; ideal for use near cities, in slightly light polluted skies. High quality EXPLORE SCIENTIFIC H Alpha filter Only lets the emission lines of hydrogen pass Absorbs all other emission lines and almost all artificial light Ideal for use near the city, with slightly lightened skies
