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Explore Scientific | SKU:
310230
Nebula Filter H-Beta 2.0-inch
Regular price
$179.99
Unit price
Nebula Filter H-Beta 2.0-inch is backordered and will ship as soon as it is back in stock.
Shipping & Returns
Shipping & Returns
We offer free US standard shipping on orders over $99 and 30-day returns on most items. Some limitations apply.
Shipping Policy
30-Day Return Policy
Hydrogen is the most abundant element in the universe, and many nebulae glow in the light of its beta line. The Explore Scientific H-Beta filter passes only the hydrogen-beta emission line, blocking every other wavelength and with them nearly all artificial light, so those nebulae stand out against the sky.
Key Features
- H-beta passband. 478 to 496 nm, peaking at 489 nm, with 94.5% transmission, in Explore Scientific's figures.
- Blocks nearly all artificial light by passing the hydrogen-beta line alone.
- 2-inch format. Fits standard 2-inch eyepieces and filter wheels.
Ideal For
- Visual observers after faint hydrogen-beta nebulae, the Horsehead, California and Cocoon nebulae among them.
- Astrophotographers adding an H-beta filter to a 2-inch filter wheel.
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