Collection

Length: 6.5" (16.5 cm)
Watts: 3.1
Voltage: 12v
Amperage: .25 amp

DN002 Heater For 1.25 inch (3.2cm) eyepieces

$37.95

AstroSystems Astro Systems Secondary Dew Guard 3.5" to 6.0" Secondary Mirrors - DG3

AstroSystems amazing Dew Guard secondary heating system attaches directly to your secondary mirror and then automatically senses the air temperature and the mirror temperature, then maintains the secondary mirror at a preset (adjustable) temperature above

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Astro Systems Secondary Dew Guard 3.5" to 6.0" Secondary Mirrors - DG3

$58.00

Farpoint Farpoint Desiccant System Cap 1.25 Inch

Refillable desiccant cap to protect fine optics. For 1.25″ focusers.

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Farpoint Desiccant System Cap 1.25 Inch

$52.80

Farpoint Farpoint Desiccant Refills Package of 20 indicating silica gel pouches

Helps keep your refractors, SCT's & etc. insides dry during storage. Water is the enemy of fine optics.

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Farpoint Desiccant Refills Package of 20 indicating silica gel pouches

$15.40

Rechargeable (in the microwave) dry pack. Store in your airtight cases to keep your fine items dry.

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Desiccant Dry Pak Cannister (Set of 2)

$18.00

Bob's Knobs Knobs for Zhumell Z8, Z10, and Z12 Secondary

Fits: Zhumell Z8, Z10, and Z12 telescopes

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Knobs for Zhumell Z8, Z10, and Z12 Secondary

$20.95

Bob's Knobs Knobs for SkyWatcher Newtonian Primary with Factory Collimation Screws

Fits: SkyWatcher Newtonian telescopes with factory collimation screws.

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Knobs for SkyWatcher Newtonian Primary with Factory Collimation Screws

$25.95

Bob's Knobs Knobs for Newtonian 10" Primary Mirrors

Part: MLB10pri
Fits: 10” Newtonian telescopes manufactured by Guan Shen Optical (GSO), including Meade LIghtbridge, Hardin Optical, and Zhumell.

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Knobs for Newtonian 10" Primary Mirrors

$29.95

Bob's Knobs Knobs for Common Newtonian 12" Primary Mirror

Part: MLB12pri
Fits: 12” Newtonian telescopes manufactured by Guan Shen Optical (GSO), including Meade LIghtbridge, Hardin Optical, and Zhumell.

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Knobs for Common Newtonian 12" Primary Mirror

$29.95

Bob's Knobs Bob's Knobs for Meade 8” f/10 with 6-Screw Secondary

Part: M8-6
Fits: Meade 8” (20 cm) f/10 SCT versions with six screws on the secondary housing (LX90, LX200, LX200ACF, LX200R, LS-8 SC and ACF, LT-8 SC and ACF, others). The inner screws are for collimation.

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Bob's Knobs for Meade 8” f/10 with 6-Screw Secondary

$20.00

Bob's Knobs Bob's Knobs for Meade 8” f/10 with 4-Screw Secondary

Part: M8-4
Fits: Meade 8” (20 cm) f/10 SCT versions with four screws on the secondary housing (LX90, LX200, others).
Knobs: Black plastic, 13 mm (1/2”) diameter
Threads: Black anodized aluminum alloy

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Bob's Knobs for Meade 8” f/10 with 4-Screw Secondary

$20.00

Bob's Knobs M12-3 Meade 12" f/10 SCT with 3 or 4 Screw Secondary

Meade 12” (30 cm) f/10 SCT versions with three screws or four screws on the secondary housing

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M12-3 Meade 12" f/10 SCT with 3 or 4 Screw Secondary

$20.00

Bob's Knobs Bob's Knobs for Meade 10" f/10 SCT 3-Screw Secondary

Meade 10” (25 cm) f/10 SCT versions with three screws on the secondary housing (2120, LX10, LX50, LX90, LX100, LX200, others)

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Bob's Knobs for Meade 10" f/10 SCT 3-Screw Secondary

$20.00

M10-6 Meade 10" f/10 SCT 6-Screw Secondary

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M10-6 Meade 10" f/10 SCT 6-Screw Secondary

$20.00

Bob's Knobs Bob's Knobs for C9.25 f/10 Secondary with Metric Collimation Screw Threads and “Trifid” Fastar Housing

Part: C9.25fst
Fits: Celestron 9.25” (23.5 cm) f/10 SCT versions with "Trifid" Fastar secondary housing

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Bob's Knobs for C9.25 f/10 Secondary with Metric Collimation Screw Threads and “Trifid” Fastar Housing

$24.95

Bob's Knobs Bob's Knobs for C8 f/10 Post-1980 Secondary with Standard Collimation Screw Threads

Part: C8std
Fits: Celestron 8” (20 cm) f/10 post-1980 SCT with factory Allen or silver Phillips collimation screws, with or without Fastar secondary with silver collimation screws (C8 black, or gray; Ultima 2000; NexStar 8; others). This includes the pos

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Bob's Knobs for C8 f/10 Post-1980 Secondary with Standard Collimation Screw Threads

$20.00

Bob's Knobs Bob's Knobs for C8 f/10 Pre-1980 Orange-Tube Secondary

Part: C8org
Fits: Pre-1980 Celestron 8” (20 cm) f/10 SCT with orange optical tube and factory set-style collimation screws.

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Bob's Knobs for C8 f/10 Pre-1980 Orange-Tube Secondary

$24.95

Bob's Knobs Bob's Knobs for Celestron 5" with Silver Screws

We offer knobs for the Celestron 5” Schmidt-Cassegrain secondary with either standard or metric collimation screws in the f/10 and rare f/6 versions.

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Bob's Knobs for Celestron 5" with Silver Screws

$20.00

Bob's Knobs Bob's Knobs for C14 f/11 Secondary with Factory Phillips Collimation Screws with Metric Threads

Part: C14metphi
Fits: Celestron 14” (36 cm) f/11 SCT versions with metric thread factory Phillips collimation screws with Fastar and with or without EdgeHD optics.

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Bob's Knobs for C14 f/11 Secondary with Factory Phillips Collimation Screws with Metric Threads

$24.95

Bob's Knobs Bob's Knobs for C11 f/10 with Flat Secondary Housing and Standard Collimation Screw Threads (NOT FOR CPC 1100 or Edge)

Part: C11std
Fits: Celestron 11” (28 cm) f/10 SCT versions (metal or carbon fiber tube) with flat secondary housing and standard collimation screw threads (not for CPC 1100 or EdgeHD).

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Bob's Knobs for C11 f/10 with Flat Secondary Housing and Standard Collimation Screw Threads (NOT FOR CPC 1100 or Edge)

$20.00

Bob's Knobs Bob's Knobs for C11 f/10 with “Trifid” Fastar Secondary Housing and Metric Collimation Screw Threads

Part: C11metfst
Fits: Celestron 11” (28 cm) f/10 SCT versions (metal or carbon fiber tube) with metric thread factory collimation screws and "Trifid" rotary cover Fastar secondary housing. Factory collimation screws are black Phillips. These knobs will f

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Bob's Knobs for C11 f/10 with “Trifid” Fastar Secondary Housing and Metric Collimation Screw Threads

$24.95

Viewing in air-lifting comfort. Adjustable height with pneumatic lift.

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Tele Vue Air Chair

$291.00

Telegizmos TGTP Tripod Cover

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Telegizmos TGTP Tripod Cover

$75.00

$TeleGizmos Telegizmos TGR6-L 6" Refractors f1000-f12000$

Large GEM mounted up to 58" tube length**

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Telegizmos TGR6-L 6" Refractors f1000-f12000

$95.00