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Features:

Thin vanes for low diffraction.
Unique simplified collimation procedure.
Polycarbonate mirror shroud securely retains the mirror without strain.
Optional anti-dew heater available for most sizes.
Available for English sizes and imported metric size secondary mirrors.
Ultra-black, low-scatter surface texture.

Protostar secondary mounts are professional quality optical mounts designed for the lowest possible diffraction, and simplified collimation adjustment.

Optional features are a built-in wireless antidew heater, and custom offsets can also be specified when ordering. Larger models feature special heavy-duty spider construction. Available in metric threaded versions for no additional cost.

Each secondary mount kit includes the spider, mirror holder, collimation tool, drill bit for installation, mounting screws, and instructions. Made in the U.S.A.

Read how to order secondary mounts...

More detailed information about this product...

Detailed Product Images
(click to enlarge)

Download the installation instructions for secondary mounts.

See also:
3-vane secondary mounts.

Available Options
An anti-dew heater, built-in offset, and metric threading are optional features you can have built in to your secondary mount. See more details...

We make the spider to fit your tube or upper cage's diameter with a small gap between the tips of the spider and the tube wall. This permits minor centering adjustments. Provide your actual inside diameter with your order.

More information on providing these dimensions is here.


Secondary size

SKU

Price

Notes

1.00 inch

1004V

$100.00

For up to 13.5" tube (or upper cage) inside diameter. Specify your ID when ordering.

Anti-dew heater not available for this size.

28.0 mm

G02804V

$100.00

For up to 350 mm tube inside diameter. Specify your ID when ordering.

Anti-dew heater not available for this size.

31.0 mm

G03104V

$110.00

For up to 350 mm tube inside diameter. Specify your ID when ordering.

Anti-dew heater not available for this size.

1.30"

1304V

$115.00

For up to 15.0" tube (or upper cage) inside diameter. Specify your ID when ordering.

Anti-dew heater not available for this size.

1.50"

1504V

$122.00

For up to 18.0" tube (or upper cage) inside diameter. Specify your ID when ordering.

Anti-dew heater not available for this size.

1.52"

1524V

$122.00

For up to 18.0" tube (or upper cage) inside diameter. Specify your ID when ordering.

Anti-dew heater not available for this size.

1.83"

1834V

$126.00

For up to 18.0" tube (or upper cage) inside diameter. Specify your ID when ordering.

46.5 mm

G04654V

$124.00

For up to 450 mm tube inside diameter. Specify your ID when ordering.

50.0 mm

G05004V

$128.00

For up to 450 mm tube inside diameter. Specify your ID when ordering.

2.14"

2144V

$128.00

For up to 18.0" tube (or upper cage) inside diameter. Specify your ID when ordering.

62.5 mm

G06254V

$126.00

For up to 550 mm tube inside diameter. Specify your ID when ordering.

63.0 mm

G06304V

$126.00

For up to 550 mm tube inside diameter. Specify your ID when ordering.

2.60"

2604V

$138.00

For up to 22.0" tube (or upper cage) inside diameter. Specify your ID when ordering.

68.0 mm

G06804V

$128.00

For up to 550 mm tube inside diameter. Specify your ID when ordering.

70.0 mm

G07004V

$140.00

For up to 550 mm tube inside diameter. Specify your ID when ordering.

74.0 mm

G07404V

$144.00

For up to 600 mm tube inside diameter. Specify your ID when ordering.

3.10"

3104V

$144.00

For up to 24.0" tube (or upper cage) inside diameter. Specify your ID when ordering.

80.0 mm

G08004V

$150.00

For up to 600 mm tube inside diameter. Specify your ID when ordering.

3.50" HD

3504VHD

$184.00

Special heavy construction model (wider/thicker vanes & larger spider hub) for up

to 24.0" tube (or upper cage) inside diameter. Specify your ID when ordering.

90.0 mm

G09004VHD

$184.00

Special heavy construction model (wider/thicker vanes & larger spider hub) for up

to 600mm tube (or upper cage) inside diameter. Specify your ID when ordering.

4.00" HD

4004VHD

$200.00

Special heavy construction model (wider/thicker vanes & larger spider hub) for up

to 28.0" tube (or upper cage) inside diameter. Specify your ID when ordering.

104.0 mm

G10404VHD

$200.00

Special heavy construction model (wider/thicker vanes & larger spider hub) for

up to 750 mm tube (or upper cage) inside diameter. Specify your ID when ordering.

4.50" HD

4504VHD

$210.00

Special heavy construction model (wider/thicker vanes & larger spider hub) for up

to 32.0" tube (or upper cage) inside diameter. Specify your ID when ordering.

120.0 mm

G12004VHD

$220.00

Special heavy construction model (wider/thicker vanes & larger spider hub) for

up to 850.mm tube (or upper cage) inside diameter. Specify your ID when ordering.

5.00" HD

5004VHD

$220.00

Special heavy construction model (wider/thicker vanes & larger spider hub) for up

to 32.0" tube (or upper cage) inside diameter. Specify your ID when ordering.


Don't see your mirror size? Contact us and we can supply a custom-sized holder. No more gluing mirrors!

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