Archive for the ‘Diagonals’ Category
Last Updated on Tuesday, 13 July 2010 07:50 Written by Administrator Tuesday, 13 July 2010 07:50
Tele Vue Everbrite Diagonal, 1.25″ Review
A review of Tele Vue Everbrite Diagonal, 1.25″.
Price: 190 USD
Manufacturer: Tele Vue
Tele Vue Everbrite Diagonal, 1.25″ – Product Warranty: Five year
Product Type: Telescope Accessories > Diagonals
Tele Vue Everbrite diagonals deliver top-of-the-line image quality. Their dielectric, nonmetallic coating is 99% reflective across the full visual spectrum, resulting in the brightest, most natural image available. The coating is applied to Pyrex glass with a surface accuracy of a 1/10 wave. The body is machined from a solid block of aluminum, so permanent alignment is assured and heavy accessories can’t force the diagonal body to unscrew from the barrel. Feature brass clamp rings, anti-reflection thread-baffles, and threads for filters.
Posted under Diagonals, Telescope Accessories | Comments Off
Last Updated on Tuesday, 13 July 2010 07:50 Written by Administrator Tuesday, 13 July 2010 07:50
2″ Tele Vue Everbrite SCT Mirror Diagonal Review
A review of 2″ Tele Vue Everbrite SCT Mirror Diagonal.
Price: 275 USD
Manufacturer: Tele Vue
2″ Tele Vue Everbrite SCT Mirror Diagonal – Product Warranty: Five year
Product Type: Telescope Accessories > Diagonals
Tele Vue Everbrite diagonals deliver top-of-the-line image quality. Their dielectric, nonmetallic coating is 99% reflective across the full visual spectrum, resulting in the brightest, most natural image available. The coating is applied to Pyrex glass with a surface accuracy of a 1/10 wave. The body is machined from a solid block of aluminum, so permanent alignment is assured and heavy accessories can’t force the diagonal body to unscrew from the barrel. Features brass clamp rings, anti-reflection thread-baffles, and threads for filters.
Posted under Diagonals, Telescope Accessories | Comments Off
Last Updated on Tuesday, 13 July 2010 07:50 Written by Administrator Tuesday, 13 July 2010 07:50
Orion 2″ Dielectric Mirror Star Diagonal Review
Review of Orion 2″ Dielectric Mirror Star Diagonal.
Price: 124.95 USD
Manufacturer: Orion
Orion 2″ Dielectric Mirror Star Diagonal – Product Warranty: One year
Product Type: Telescope Accessories > Diagonals
Our highest-quality mirror diagonals feature sophisticated, lab-tested dielectric coatings that boast an astounding 99% reflectivity. Dielectric coatings are more durable than enhanced aluminum coatings, so you’ll enjoy years of exceptional performance. The machined and anodized aluminum housing features machine-threaded baffles for high contrast and a nonmarring compression ring collar for securing the eyepiece. The 2″ model has a 1.25″ adapter to accept 1.25″ eyepieces. Nosepiece barrel is threaded to accept filters. Endcaps included.
Posted under Diagonals, Telescope Accessories | Comments Off
Last Updated on Tuesday, 13 July 2010 07:50 Written by Administrator Tuesday, 13 July 2010 07:50
Orion Correct Image Diagonal, 1.25″ Review
A review of Orion Correct Image Diagonal, 1.25″.
Price: 44.95 USD
Manufacturer: Orion
Orion Correct Image Diagonal, 1.25″ – Product Warranty:
Product Type: Telescope Accessories > Diagonals
For terrestrial viewing with a refractor or Cassegrain telescope, use of a correct-image (or “image erecting”) prism diagonal may be desirable. The image through the eyepiece image will appear upright and nonreversed, matching the naked-eye orientation. So a correct-image diagonal is essential for terrestrial viewing with the above telescope types and is useful for astronomical viewing for those that prefer to have the view through the telescope match the naked-eye orientation. We have three correct-image diagonals to choose from: a 45-deg 1.25″ version, a 90-deg 1.25″ version, and a 90-deg 2″ model (with 1.25″ collar). All are fully multi-coated and threaded for filters. Note that the 45-deg correct-image diagonal requires 5/8″ more focus travel than typical diagonals. Diagonals are not recommended for use in reflector telescopes.
Posted under Diagonals, Telescope Accessories | Comments Off