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 94%, emission nebulae gain 3-fold in contrast!
SALE PRICE $75.00 shipped. PayPal preferred.