A new take on Telrad Reflex Sight Red Green Reticle Mounting Baseis offered with a switchable red or green reticle for good contrast against the background. It is outfitted with a generous 2.5 x 1.4" viewing window that provides a wide unmagnified true view of the sky, unlike conventional finder scopes that offer limited fields of view presented upside down and backwards. Three concentric rings—spaced at 4, 2, and 0.5°—provide an easy point of reference for locating objects and quick navigation when manually star-hopping. An easy-to-use, infinitely adjustable rheostat enables precise brightness control so users won't hurt their night-adjusted vision. A mounting base is included, and the sight easily detaches from it for storage or to move it to another OTA with a separate mounting base already attached without requiring it to be recentered with the OTA.

Provides Unmagnified True View of Sky    Triple Concentric Ring Reticle    Choice of Reticle Colors    Large 2.5 x 1.4" Viewing Window    Precise Infinitely Adjustable Rheostat    Quick-Detach Mount for Easy Storage    Weight: 11 oz Mount    Runs on Two AA Batteries

• Wide unmagnified field of view
• Generous 2.5 x 1.4" viewing window
• Reticle can be switched between red and green for optimal contrast against background conditions
• Long eye relief
• Zero parallax
• Provides uncluttered, correct 'real sky' view for quick manual sighting of known objects like planets, stars, clusters, and galaxies

• Red or green illumination makes the reticle clearly visible without affecting night-adjusted vision
• Three concentric circles set at 4, 2, and 0.5° to help 'star hopping'
• Infinitely adjustable rheostat allows for precise illumination control

• Quick detachment from the mounting base enables it to be removed and installed quickly without recalibration
• Runs on two user-supplied AA batteries
• Weight: 9 oz without mount

Related Questions and Answers

Q: 1. Are the four holes in the top plate suitable for grub screws or some other item to hold the tripod head in place (to keep it from rotating)?

A: No, those holes are for the downward screws that attach the black part to the silver base.

Q: 2. Is this apse or full frame? Listing says both.

A: Hi, this is a Full Frame lens.

Q: 3. Is this compatible with the Sirui W-2204 tripod, and Manfrotto MVH500AH video fluid head?

A: While the Manfrotto MVH500AH head can fit on the top of the Kirk TLB-1, the base would be too wide to sit flush with the base on the Sirui W-2204.

Q: 4. Is this compatible with the Sirui W-2204 tripod, and the Manfrotto MVH500AH?

A: Yes. This will mount to tripods with a 3/8"-16 mounting stud (about 98% of modern tripods), including the aforementioned Sirui and Manfrotto tripods.

Q: 5. I have the M50 therefore this would require the adapter it comes with plus the ef to m adapter. Would this work?

A: Yes, this comes with the EF adapter, thus you'd just need the EF to EF-M adapter to get it on to your Canon EOS M50.

Q: 6. Can the focal length of this lens be increased with a teleconverter?

A: This may be used with teleconverters that have no optical tube in their design, but not traditional teleconverters (such as Nikon's own 1.4x and 2.0x) that have them.

Q: 7. SZ 500mm is a universal mount, means it can be used on Canon 7D Mark ii?

A: No, Tokina SZ 500mm f/8 Reflex MF Lens does not have a universal mount. Tokina prefixed the mount adaptor to the lens and removing it will void the manufacture warranty. The BH #TOSZMF500FE is dedicated to mirrorless cameras which comes on 4 different mounts. (Sony-E, Fuji-X, Micro four third and Nikon Z mount) Tokina also design this lens for DSLR cameras. You can use the option below directly on your Canon EF mount DSLRS. Tokina SZ SUPER TELE 500mm F/8 Reflex Lens (Canon EF-Mount) BH #TOSZMF500C • MFR #SZMF500-C https://www.bhphotovideo.com/c/product/1687815-REG/tokina_szmf500_c_sz_500mm_f_8_reflex.html?sts=pi&pim=Y

Q: 8. If this lens is already a Nikon F-mount, why does it need an F-mount adaptor?

A: The lens itself is a T mount which makes adaptable to many cameras with the right adapter. It says Nikon F mount because it's coming with the F mount adapter.

Q: 9. Do this need and/or come with an adaptor for Fujifilm. Is this lens auto focused, or totally manual focus?

A: This lens comes with an adapter and is manual focus only.

Q: 10. I am planning to order one for my d750. Will the f-mount come with it Fit a z mount? Or is there a separate z mount adapter available?

A: The lens is a Nikon F mount lens. If you want to use it on a different camera than the D750. Like a Nikon Z mount, you will need to get an adapter. This is one option for a lens adapter, Nikon FTZ Mount Adapter BH #NIFTZ • MFR #4185 https://bhpho.to/37kPGgs Note, the lens is manual only and it is not full frame. Used on your D750, it will crop the image by 1.5 times. And you will lose a lot of resolution.