Lumicon Deep Sky FIlter Brand New In Box
The Lumicon Deep Sky filter is a wide bandpass filter which has been optimized for astrophotography.
The gain in photographic contrast is approximately 3-fold, which means you can use up to three times longer exposure time before reaching the sky-fog limit when using the Deep Sky filter. Since transmission for the nebula emission lines is over 90%, emission nebulae gain 3-fold in contrast! Galaxies gain only modestly in contrast (1-1.5 fold). Since the Lumicon Deep-Sky filter transmits in blue, green, and red bands, relatively good color balance is maintained, and this filter yields great color astrophotos.
SALE PRICE $80.00 shipped. PayPal preferred.