Howie Glatter Holographic Attachment for Laser Collimator - Crosshair and Circle Scope Patte...
Ships by Next Business Day
Contiguous US Customers:
All items we sell ship for free within the Contiguous US. Shipping will be via the cheapest shipping method which will vary depending on the items in your order. During checkout, you may also be shown other optional faster shipping choices.
US Customers in Hawaii and Alaska:
Free shipping applies to almost all products. A few large telescopes and mounts are excluded from this free shipping offer. For these items, please contact us to obtain a shipping quote before you check out using the online shopping cart.
International Customers:
Free shipping does not apply to international orders. During check-out, you will be presented with several shipping choices and costs. However, the export of some items may be restricted outside the US due to size or manufacturer restrictions.
Please Note:
- This is the new "NV" version and not the old version.
- New Version (this item): Bigger & coarser 3/8-32 thread diameter. Identified by a visible ring. Old Version (no longer available from Agena): Super fine 5/16-56 thread diameter. No visible ring
- If you plan to use one of their holographic attachments such as this item, you need to make sure that you match the "old" Howie Glatter collimator with the "old" holographic attachment, and the "NV" collimator with the "NV" holographic attachment.
Optional holographic attachments for Howie Glatter laser collimators screw into the laser aperture and have a white screen front surface. They contain an optical element that diffracts most of the laser light into a diverging symmetrical pattern around the central beam. The projected pattern is useful for centering optical elements by making it symmetrical with the edge of the optic.
A cross-hair and circle “scope” pattern is available that spans 10 degrees. It has utility for non-Barlowed , conventional Newtonian primary collimation, where the primary is adjusted to return the reflected central laser beam back into the laser aperture of the collimator. The cross-hair intersection makes it easier to see when the return beam is centered on the collimator face.
This item is meant for use ONLY with compatible Howie Glatter laser collimators. It cannot be used with collimators from any other brand.
| Product Banner Type | new |
|---|---|
| Free Shipping Graphic | Free US Shipping |
| Hide Found a better Shipped Price on Frontend? | No |
Please Note:
- This is the new "NV" version and not the old version.
- New Version (this item): Bigger & coarser 3/8-32 thread diameter. Identified by a visible ring. Old Version (no longer available from Agena): Super fine 5/16-56 thread diameter. No visible ring
- If you plan to use one of their holographic attachments such as this item, you need to make sure that you match the "old" Howie Glatter collimator with the "old" holographic attachment, and the "NV" collimator with the "NV" holographic attachment.
Optional holographic attachments for Howie Glatter laser collimators screw into the laser aperture and have a white screen front surface. They contain an optical element that diffracts most of the laser light into a diverging symmetrical pattern around the central beam. The projected pattern is useful for centering optical elements by making it symmetrical with the edge of the optic.
A cross-hair and circle “scope” pattern is available that spans 10 degrees. It has utility for non-Barlowed , conventional Newtonian primary collimation, where the primary is adjusted to return the reflected central laser beam back into the laser aperture of the collimator. The cross-hair intersection makes it easier to see when the return beam is centered on the collimator face.
This item is meant for use ONLY with compatible Howie Glatter laser collimators. It cannot be used with collimators from any other brand.
| Product Banner Type | new |
|---|---|
| Free Shipping Graphic | Free US Shipping |
| Hide Found a better Shipped Price on Frontend? | No |
Howie Glatter Holographic Attachment for Laser Collimator - Crosshair and Circle Scope Pattern (New Version)