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Specification
BinocularPrismDescription : Porro Prism
Brand : Orion
BulletPoint : Not for use with Meade's f/8 optical tubes since those use a larger secondary.
BulletPoint1 : Also known as Bahtinov masks, Orion PinPoint Focusing Masks will help you achieve precise focus in seconds
BulletPoint2 : This PinPoint Mask fits telescope tubes with an outer diameter of 268-313mm (10.55" to 12.32")
BulletPoint3 : Orion PinPoint Focusing Masks produce a distinct, intersecting 3-line pattern once accurate focus is achieved
BulletPoint4 : Three Orion-exclusive adjustable padded pegs provide a secure grip once installed on a telescope
BulletPoint5 : Compatible with any type of telescope, and especially useful for astrophotography setups
Color : black
ExitPupilDiameter : 5 millimeters
ExternallyAssignedProductIdentifier : 6970019298436
ExternallyAssignedProductIdentifier1 : 759270400132
ExternallyAssignedProductIdentifier2 : 0759270400132
EyePieceLensDescription : Lanthanum
EyeRelief : 20 millimeters
FieldOfView : 70 degrees
Finderscope : Reflex
FocalLengthDescription : 9 millimeters
FocusType : Manual Focus
ItemName : 268-313mm ID Orion Pinpoint Telescope Focusing Mask
ItemPackageDimensions_Height : 32.8 centimeters
ItemPackageDimensions_Length : 1.4 centimeters
ItemPackageDimensions_Width : 32.6 centimeters
ItemPackageQuantity : 1
ItemTypeKeyword : telescope-eyepieces
ItemTypeName : Decoration
Manufacturer : Orion
Material : Rubber
ModelName : 268-303mm ID Orion PinPoint Telescope Focusing Mask
ModelNumber : 40013
NumberOfItems : 1
PartNumber : 40013
ProductDescription : Super Ploessl eyepieces are among the most inexpensive available and are true classics. Generations of amateur astronomers have used them for successful astronomy. The ingenious design employs only 5 lenses, but provides a clear and bright image. These are the eyepieces for those who want quality but do not need expensive high-end eyepieces. 52° field of view - so it is not like "looking through a tunnel": Super Ploessl eyepieces are a plus for your observing because, in comparison to cheap standard eyepieces, they have a wider, 52 degree, field of view. You observe as through a large window and it also means that you can see more detail. Blackened lens edges - more contrast with bright and faint objects: When observing with a telescope, it really all comes down to good quality eyepieces - these are just as important as the telescope itself. They decide whether you can make out the fine spiral arms of M51, or make out a minor planet that is right at the performance limit of the telescope. They reduce reflections even when observing bright objects. The lens edges of these Super Ploessl eyepieces have been blackened to ensure they provide good contrast. Light does not get 'lost on the way', but goes to exactly where it should - into your eye. A large range of focal lengths - from 4mm to 40mm: These eyepieces provide you with a range of 9 focal lengths. So you are guaranteed to find the right magnification and increments for your telescope. And the best part - all the eyepieces are parfocal.
ProductSiteLaunchDate : 2003-11-01T00:00:00.000-08:00
Size : large
Style : Guidescope
SupplierDeclaredDgHzRegulation : not_applicable
UnitCount : 1