Celestron assembled the Moon Filter Set to give you the right tools for safely enjoying perfect views of the lunar surface during all of its phases. Each of the three neutral density filters offers different degrees of transmission that you can use to match different moon phases. A fourth Moon & Sky Glow filter provides high-contrast views of the lunar surface and enhances observation of deep-sky objects from light-polluted skies. The aluminum filter cells are threaded on both sides so the filters will fit most standard 1.25" eyepieces, eyepiece imagers, and accessories and are stackable with other filters for a customized viewing experience. Emphasizing its purpose, the set includes a plastic carrying case with a moon map and legend for identifying the most popular lunar features.

Filters Fit 1.25" Eyepieces/Accessories    Choose the Right Filter for Each Phase    ND96-0.9 13% Light Transmission Filter    ND96-0.6 25% Light Transmission Filter    ND96-0.3 50% Light Transmission Filter    Moon & Sky Glow Filter    Stackable Filter Threads    Case with Moon Map

Filter 1:

• ND96-0.9
• 13% light transmission
• Use when the moon is a dim crescent and you need minimal filtration

• ND96-0.6
• 25% light transmission
• Ideal for the first and third quarters when the moon is getting brighter and more filtration is required

• ND96-0.3
• 50% light transmission
• Maximum filtration allows safe viewing during gibbous and full moon phases with improved contrast and clarity

• Moon & Sky Glow filter
• Ideal during all moon phases, especially gibbous and full
• Filters interfering light from streetlamps and the scattered atmospheric light that they and the moon can cause
• Red and blue colors are strengthened without significant dimming of the view
• Reveals enhanced natural colors

Related Questions and Answers

Q: 1. Does this zoom attach directly to a t-ring?

A: No it does not. It slides into a 1.25" eyepiece sleeve of a telescope.

Q: 2. Can this diagonal be used on a Newtonian 114mm telescope

A: No, it is not possible to use the Celestron 90° Star Diagonal (1.25") with a Newtonian Reflector Telescope.

Q: 3. can this filter be used to view the flame and horse head nebula too and does it help viewing galaxies..??

A: So we really do not recommend using this filter for this purpose. It is more for Imaging, and it will reduce what you are seeing. I honestly don't recommend using a filter at all with looking at what you are going to view. However if you did want to get a filter then I would go with the Celestron UHC (Ultra High Contrast) LPR Filter (1.25 ) - Reduces Transmission of Wavelengths of Artificially-Produced Light. Website link: http://bhpho.to/1Luj0jC

Q: 4. I have 130 eq ...can i used zoom lens

A: As long as you have 1.25 mount hole on your telescope (I believe 130eq is 1.25 ), you can use this one. I have 127eq and I absolutely love this eyepiece!

Q: 5. Does this come apart into two pieces like the Orion so you can put one half on the eyepiece and the other on the diagonal?

A: No, it dose not come apart.

Q: 6. What is the thread diameter and TPI or Pitch under the rubber eyecup?

A: That information is not published by Celestron

Q: 7. Are there t-threads behind the eyecup that a T-adapter can screw onto?

A: The Celestron 8-24mm Zoom Eyepiece (1.25") BH #CEEPZ824 • MFR #93230 has no T-threads.

Q: 8. Will these filters work with the Meade 114EQ-AST 4.5 /114mm Reflector Telescope Kit B&H # ME114EQST / MFR # 04066-1 ? How do they compare to the Meade #3200 Lunar and Planetary Color 4-Piece Filter Set ?

A: Yes this filter set will be compatible with your Meade 114EQ-AST 4.5 /114mm Reflector Telescope Kit. Both kits are actually somewhat comparable. Some reviewers have said the Meade is better quality wise. Personally I think they are the same.

Q: 9. Is it a Mirror diagonal or a prism diagonal ?

A: It is a mirror diagonal. The image is upright but not corrected left to right.

Q: 10. Can this be used to replace the diagonal that comes with the Celestron C90?

A: Yes it can