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1.25" Lunar Filter Bundle

1.25" Lunar Filter Bundle

Regular price $11.95 USD
Regular price Sale price $11.95 USD
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**United States Shipping Only**

  • Reduce glare and increase contrast of the Moon with the Celestron 1.25” Moon Filter
  • Also useful for extra bright planets as well as terrestrial viewing over sand or snow
  • Threads onto most 1.25” eyepieces in seconds

 

The Moon has the distinction of being the most often viewed celestial object through backyard telescopes. It is undoubtedly beautiful and mysterious, and is one of those constants in our lives that connects us to every other being on our planet. Regardless of who we are or where we live or travel, we all look at the same moon.

It is difficult to look at the Moon through a telescope and see all of the details due to its brightness. Our eyes are not ready for the bright beam of light that emits from the eyepiece, and they “stop down”, just as they would when you step out into the sunlight on a bright summer’s day. When we’re in the sunlight, we often wear sunglasses. They help us relax our eyes, protect us from glare, and help us see things more clearly. When amateur astronomers observe the Moon, we use a moon filter. A Celestron Moon Filter provides similar benefits to those of sunglasses...our eye relaxes and opens up to let us see more detail. This is especially important when observing the Moon when it is near full.

The Celestron Moon Filter simply screws onto the insert barrel of most 1.25” eyepieces. It only takes a second or two to transform your regular eyepiece into one suited for lunar observations. A Moon Filter is also helpful when observing Venus or bright terrestrial scenes. This filter is not suitable for viewing the Sun.


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    OPTICAL TUBE INFO:  
    Optical Design: Schmidt-Cassegrain
    Aperture: 280mm (11")
    Focal Length: 2800mm (110")
    Focal Ratio: f/10
    Focal Length of Eyepiece 1: 40mm (1.57")
    Magnification of Eyepiece 1: 70x
    Finderscope: 9x50
    Star Diagonal: 1.25" Star Diagonal
    Optical Tube: Aluminum
    Highest Useful Magnification: 660x
    Lowest Useful Magnification: 40x
    Limiting Stellar Magnitude: 14.7
    Resolution (Rayleigh): .5 arc seconds
    Resolution (Dawes): .42 arc seconds
    Light Gathering Power (Compared to human eye): 1593x
    Secondary Mirror Obstruction: 95mm (3.75")
    Secondary Mirror Obstruction by Diameter: 34%
    Secondary Mirror Obstruction by Area: 12%
    Optical Coatings: StarBright XLT
    Optical Tube Length: 610mm (24")
    Optical Tube Diameter: 312.42mm (12.3")
    Optical Tube Weight: 27.5 lbs (12.4 kg)
    Dovetail: CGE Dovetail bar
    MOUNT INFO:  
    Mount Type: Computerized Equatorial
    Instrument load capacity: 30 lbs (13.6 kg)
    Height adjustment range (includes mount and tripod): 1118mm - 1626mm (44" – 64")
    Tripod Leg Diameter: 50.8mm (2") Stainless Steel
    Latitude adjustment range: 7° - 77°
    Mount Head Weight: 17 lbs (7.71 kg)
    Accessory Tray: Yes
    Tripod Weight: 18 lbs (8.16 kg)
    Weight of Counterweights: 3 x 12 lbs
    Slew Speeds: 9 slew speeds - max speed 4°/second
    Tracking Rates: Sidereal, Solar and Lunar
    Tracking Modes: EQ North and EQ South
    GPS: N/A
    Dovetail Compatibility: Dual saddle plates (CG-5 and CGE saddle)
    Number of Auxiliary Ports: 3 AUX Ports (1 hand control and 2 AUX Ports for optional accessories
    Autoguide Port: Yes
    USB Port: Yes, input on Hand Control
    Power Requirements: 12V DC 3.5A (tip positive)
    Motor Drive: DC servo motors
    Alignment Procedures: 2-Star Align, 1-Star Align, Solar System Align, Last Alignment, Quick Align
    Periodic Error Correction: Yes
    Computerized Hand Control: 2 line x 18 character backlit Liquid Crystal Display, 19 LED backlit buttons, USB 2.0 Port for PC connection
    NexStar+ Database: 40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects
    Software: Celestron Starry Night Special Edition Software and SkyPortal App
    Total Kit Weight: 98.5 lbs (44.67 kg)
    Included Items: Advanced VX Equatorial Head and tripod
    Accessory Tray
    3 x 12 lbs counterweights
    NexStar+ Hand Control
    DC Power Cable (item# 18769)
    Hand Control Holster
    Solar Warning
    • Never look directly at the Sun with the naked eye or with an optic (unless you have the proper solar filter). Permanent and irreversible eye damage may result.
    • Never use your optic to project an image of the Sun onto any surface. Internal heat build-up can damage the optic and any accessories attached to it.
    • Never leave your optic unsupervised. Make sure an adult who is familiar with the correct operating procedures is with your optic at all times, especially when children are present.
    California Residents

    WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.