Feature 1Protect your eyes and safely observe the sun, sunspots, solar eclipses and planetary transits. 2The film density is 5.0, fit for Celestron P or A series telescope, for Datyson 5T0001 or 5T0002 and etc. 3The highdensity coating provides the true color of neutral white in sunlight. 4Do not look directly at the sun without the protection of the solar filter. 540mm telescope solar filter, a musthave to safely observe the sun, high performance.SpecificationItem Type:SolarFilterMaterial: for Baader FilmandPlasticColor: As Picture ShownFilm Diameter: Approx.40mm or 1.6inObjective Lens Cover Diameter:Approx.50mm or 2.0inFilm Density: 5.0Weight: Approx. 13.0g or 0.5ozFitment:Fit forCelestronP or ASeriesFit forDatyson 5T0001 or 5T0002Fit for Gazer LT70Fit for FenghuangF70400M or F70300MHow to use:1. Use the film to face the sun, check to see if there is light leakage, if there is light leakage, it is strictly forbidden to use2. After the detection is completed, put the film cover on the light inlet, check the fixation, and measure the light at the eyepiece after it is intact, and the operation can be performed without abnormal light.3. During the observation process, the membrane cover should not be moved by the nearby personnel. .wang-edit-text{ font-family:'Arial' important } .wang-edit-text table { border-top: 1px solid 000 border-left: 1px solid 000 } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000 border-right: 1px solid 000 padding: 3px 5px } .wang-edit-text table th { text-align: center }Package List1 x SolarFilterNoteIf the product film is damaged, do not use it to prevent eye damage.