Mirrors, Prisms & Holders

4" Precision Optical Mirror Mount MM34

4" Precision Optical Mirror Mount MM34

$175.00 29d 18h 36m
CELESTRON 45degree ERECT IMAGE DIAGONAL 96" MODEL 94111

CELESTRON 45degree ERECT IMAGE DIAGONAL 96" MODEL 94111

$51.00 29d 15h 53m
GSO 1.25" 90-deg Mirror Star Diagonal for Refractor Telescope # GSST

GSO 1.25" 90-deg Mirror Star Diagonal for Refractor Telescope # GSST

$31.00 29d 6h
Celestron 2"  XLT Diagonal Mirror (for SCT Telescope)

Celestron 2" XLT Diagonal Mirror (for SCT Telescope)

$116.95 28d 16h 46m
Celestron 94112A Erect Image Prism for Refractor NEW!!

Celestron 94112A Erect Image Prism for Refractor NEW!!

$34.95 28d 5h 23m
#928 45  degree Erect-Imaging Prism (1.25") #ME07217

#928 45 degree Erect-Imaging Prism (1.25") #ME07217

$47.00 27d 19h 51m
Telescope Secondary Mirror 2.76 inch

Telescope Secondary Mirror 2.76 inch

$125.00 27d 14h 42m
Celestron 93527 90-Degree Mirror Diagonal 2" for SCT

Celestron 93527 90-Degree Mirror Diagonal 2" for SCT

$116.95 26d 21h 4m
12 1 4" Pyrex Parabola Uncoated Mirror M50

12 1 4" Pyrex Parabola Uncoated Mirror M50

$550.00 26d 18h 20m
GSO 2" 99% Dielectric Quartz Diagonal for Refractor

GSO 2" 99% Dielectric Quartz Diagonal for Refractor

$132.00 26d 5h 9m
William Optics 1.25" 45 degree Erecting Prism Diagonal

William Optics 1.25" 45 degree Erecting Prism Diagonal

$82.00 26d 59m
CELESTRON 10mm1.25"  CELESTRON 10mm FULLY COATED

CELESTRON 10mm1.25" CELESTRON 10mm FULLY COATED

$39.00 25d 5h 16m
CELESTRON 15mm1 1 4"  CELESTRON 15mm TELESCOPE EYEPIECE

CELESTRON 15mm1 1 4" CELESTRON 15mm TELESCOPE EYEPIECE

$49.00 24d 17h 8m
CELESTRON 10mm1.25"  CELESTRON 10mm TELESCOPE  EYEPIECE

CELESTRON 10mm1.25" CELESTRON 10mm TELESCOPE EYEPIECE

$39.00 24d 15h 50m
William Optics 1.25" Carbon Fiber Dielectric Diagonal

William Optics 1.25" Carbon Fiber Dielectric Diagonal

$97.00 24d 6h 53m
Galileo 2-pc. 80mm(3.1496 ") X 700mm Astronomical Reflector Telescope Mirror Set

Galileo 2-pc. 80mm(3.1496 ") X 700mm Astronomical Reflector Telescope Mirror Set

$32.95 24d 2h 50m
Explore Scientific VFEI0850 Erect Image ViewFinder

Explore Scientific VFEI0850 Erect Image ViewFinder

$149.95 23d 18h 16m
Celestron 90° Angle Star Diagonal,  1.25". #94115A

Celestron 90° Angle Star Diagonal, 1.25". #94115A

$32.95 23d 3h 35m
William Optics 2" Carbon Fiber Dielectric SCT Diagonal

William Optics 2" Carbon Fiber Dielectric SCT Diagonal

$168.00 20d 20h 51m
CELESTRON 18mm KELLNER EYEPIECE .96    1.25"CELESTRON

CELESTRON 18mm KELLNER EYEPIECE .96 1.25"CELESTRON

$39.00 20d 15h 37m
Quartz Dielectric Diagonal 2" by High Point

Quartz Dielectric Diagonal 2" by High Point

$129.95 19d 20h 19m
Dielectric Diagonal 2" by High Point

Dielectric Diagonal 2" by High Point

$99.95 19d 20h 18m
SCT Dielectric Diagonal 2" by High Point

SCT Dielectric Diagonal 2" by High Point

$109.95 19d 20h 18m
SCT Quartz Dielectric Diagonal 2" by High Point

SCT Quartz Dielectric Diagonal 2" by High Point

$139.95 19d 20h 18m
GSO 1.25" 45 degree Erect Image Amici Prism Diagonal

GSO 1.25" 45 degree Erect Image Amici Prism Diagonal

$31.00 19d 4h 34m
VINTAGE PROFESSIONAL STUDIO MICROPHONE ALTEC 689BX MIC

VINTAGE PROFESSIONAL STUDIO MICROPHONE ALTEC 689BX MIC

$349.98 19d 11m
 CELESTRON  HIRSCH T ADAPTER

CELESTRON HIRSCH T ADAPTER

$30.00 18d 3h 11m
GSO 2" 99% Dielectric Quartz Mirror Diagonal for SCT

GSO 2" 99% Dielectric Quartz Mirror Diagonal for SCT

$132.00 17d 16h 44m
CELESTRON   1.25"  TELESCOPE CELESTRON STAR DIAGONAL

CELESTRON 1.25" TELESCOPE CELESTRON STAR DIAGONAL

$51.00 16d 1h 31m
CELESTRON 6mm  CELESTRON H6 mm

CELESTRON 6mm CELESTRON H6 mm

$49.00 15d 21h 1m
CELESTRON 4mm  CELESTRON H4 mm

CELESTRON 4mm CELESTRON H4 mm

$49.00 15d 21h
STANDARD VISUAL FOR CELESTRON TELESCOPE 1000mmLENS

STANDARD VISUAL FOR CELESTRON TELESCOPE 1000mmLENS

$46.00 15d 20h 7m
CELESTRON 20mm  CELESTRON H20 mm

CELESTRON 20mm CELESTRON H20 mm

$49.00 15d 20h 6m
CELESTRON 25mm  CELESTRON H25 mm

CELESTRON 25mm CELESTRON H25 mm

$49.00 15d 20h 5m
CELESTRON STAR DIAGONAL .96 TELESCOPE 1000mmLENS

CELESTRON STAR DIAGONAL .96 TELESCOPE 1000mmLENS

$49.00 15d 2h 12m
Lumicon Enhanced 2" Refractor Diagonal for Telescopes

Lumicon Enhanced 2" Refractor Diagonal for Telescopes

$179.95 14d 7h 30m
GSO 2" 90 deg Mirror Diagonal for Refractor Telescopes

GSO 2" 90 deg Mirror Diagonal for Refractor Telescopes

$69.50 14d 7h 20m
GSO 2" 90 deg Mirror Diagonal for SCT Telescopes

GSO 2" 90 deg Mirror Diagonal for SCT Telescopes

$69.50 14d 7h 17m
William Optics 2" 90 degree Erecting Prism Diagonal

William Optics 2" 90 degree Erecting Prism Diagonal

$224.00 14d 6h 58m
William Optics 2" Dura-Bright Mirror Star Diagonal

William Optics 2" Dura-Bright Mirror Star Diagonal

$165.00 14d 6h 58m
William Optics 2" Dielectric SCT   Refractor Diagonal

William Optics 2" Dielectric SCT Refractor Diagonal

$151.00 14d 6h 58m
William Optics 2" Dielectric Diagonal w  1.25" Adapter

William Optics 2" Dielectric Diagonal w 1.25" Adapter

$120.00 14d 6h 58m
Baader 2" Clicklock Mirror Star Diagonal for Telescope

Baader 2" Clicklock Mirror Star Diagonal for Telescope

$263.00 14d 3h 5m
MEADE #933 45° ERECTING PRISM (1.25") FOR MEADE ETX-60,  ETX-70 AND ETX-80 #07220

MEADE #933 45° ERECTING PRISM (1.25") FOR MEADE ETX-60, ETX-70 AND ETX-80 #07220

$54.00 13d 22h 34m
MEADE #928 45° ERECT-IMAGE PRISM (1.25") FOR REFRACTING TELESCOPES #07217

MEADE #928 45° ERECT-IMAGE PRISM (1.25") FOR REFRACTING TELESCOPES #07217

$45.00 13d 22h 27m
 Mead #918A DIAGONAL PRISM (1.25") #ME07202

Mead #918A DIAGONAL PRISM (1.25") #ME07202

$45.00 13d 22h 11m
GSO 2" 99% Dielectric Mirror Diagonal for SCT

GSO 2" 99% Dielectric Mirror Diagonal for SCT

$102.00 13d 14h 10m
Telescope Secondary Mirror 3.5 inch

Telescope Secondary Mirror 3.5 inch

$189.00 13d 12h 19m
12" Pyrex Long Focal Length Spherical Mirror M11

12" Pyrex Long Focal Length Spherical Mirror M11

$750.00 12d 20h 27m
Tropel Laser Collimator 280 in Adjustable Mount

Tropel Laser Collimator 280 in Adjustable Mount

  $475.00 12d 18h 6m
GSO 2" 99% Dielectric Mirror Diagonal for Refractor

GSO 2" 99% Dielectric Mirror Diagonal for Refractor

$102.00 12d 16h 16m
 CELESTRON c90 STANDARD VISUAL PACKAGE C90  CELESTRON

CELESTRON c90 STANDARD VISUAL PACKAGE C90 CELESTRON

$149.00 12d 7m
Hubble Hyperbolic Newtonian Astrograph Optics,  HNA14

Hubble Hyperbolic Newtonian Astrograph Optics, HNA14

$1,300.00 11d 5h 14m
BARLOW LENS 2X .96" FOR CELESTRON TELESCOPE 1000mmLENS

BARLOW LENS 2X .96" FOR CELESTRON TELESCOPE 1000mmLENS

$46.00 11d 1h 51m
J. Unertl 9" Precision Mirror Mount MM55

J. Unertl 9" Precision Mirror Mount MM55

$900.00 10d 21h 55m
New Orion 1.25" Deluxe 45-degree Correct-Image Prism Diagonal

New Orion 1.25" Deluxe 45-degree Correct-Image Prism Diagonal

$79.99 10d 42m
 Meade Model 932 Image Erecting Prism  ME07210

Meade Model 932 Image Erecting Prism ME07210

$53.00 9d 20h 41m
Antares 0.965" to 1.25" 45 degree Erect Image Hybrid Diagonal # EIDH

Antares 0.965" to 1.25" 45 degree Erect Image Hybrid Diagonal # EIDH

$31.00 9d 5h 16m
CELESTRON 5mm X-CEL  TELESCOPE EYEPIECE 5"CELESTRON

CELESTRON 5mm X-CEL TELESCOPE EYEPIECE 5"CELESTRON

$94.00 9d 3h 19m
Hubble UL16 16" Ultra Light Truss Dobsonian Structure

Hubble UL16 16" Ultra Light Truss Dobsonian Structure

$597.50 9d 2h 43m