Question:
How does one distinguish Lumicon nebular filter types from each other?
Answer:
For those who have inadvertently lost track of the identities of their Lumicon filters, follow these guidelines:
The traditional Deep Sky Filter (Visual & Photographic) will make the daytime sky or fluorescent lights appear a deeper blue than will the Ultra-High-Contrast Filter. Its reflection from one [...]
Qestion:
What is the transmission of the Lumicon Neutral Density Filter?
Answer:
Lumicon’s Neutral Density Filter is available in three transmissions: 13%, 25% and 50%. This means that they are blocking 87%, 75% and 50% of the light across the visible spectrum.
Lumicon Neutral Density 13 (ND13) 2″
Lumicon Neutral Density 25 (ND25) 2″
Lumicon Neutral Density 50 (ND50) 2″
Lumicon Neutral [...]
Qestion:
Why is the Deep Sky filter the only nebula filter recommended for photography?
Answer:
We recommend the Deep Sky filter because it has the widest band-width among Lumicon’s nebula filters. The wide band-width of the Deep Sky allows for shorter exposure times, which makes for easier astrophotography of deep-sky objects. This is not a recommendation against narrower [...]
Question:
I am new to astronomy. What is the all-around best filter?
Answer:
Unfortunately, there is no all-around best filter for everyone. The optimum filter depends on your telescope / equipment, seeing conditions and objects wanting to view. There are three basic categories of celestial objects that can be enhanced with filters: lunar viewing, planetary viewing and deep [...]
Question:
Can you help? I have a 2″ eyepiece and want an adapter so I can fit 1 1/4″ filters to it. I realize that my field of view will be restricted. Do you have such an adapter?
Thanks, John
Answer:
John,
Because of the severe vignetting that would result, no one makes such an adapter. However, we know a [...]
