JMI Online Store
Telescope Mirrors

Home < Back

Product Index

Next Page >

Help


Product Index

Parabolic Mirror Sets

Mirror Spot
Information Index

What is BK7 Glass?

Customer Comments

Questions (FAQs)
Find What You Want

Find What We Sell for Your Equipment using the Telescope Equipment Index

Find What You Are Looking For using the Key Word Index

View Shopping Cart



Mirror Products

 
16" Mirror Set
406mm aperture
f/4.5 focal ratio
88mm secondary



MIRSET1645
$1,439

Buy Now
12" Mirror Set
304mm aperture
f/5 focal ratio
70mm secondary



MIRSET1250
$579

Buy Now
10" Mirror Set
250mm aperture
f/5 focal ratio
63mm secondary



MIRSET1050
$319

Buy Now
8" Mirror Set
200mm aperture
f/6 focal ratio
50mm secondary



MIRSET0860
$229

Buy Now
Primary and Secondary Mirror Sets for Your DIY Projects

Guan Sheng Optical (GSO) Manufacturer's Specs
Parabolic mirror with matching secondary
Diffraction limited
BK7 glass
1/16 wave RMS minimum, typically better
Aluminum reflective coating
Protective coating (SiO2)
Reflectivity approximately 93%

 

GSO Mirror Specifications
Part
Number
MIRSET1645 MIRSET1250 MIRSET1050 MIRSET0860
Nominal
Aperture
16" 12" 10' 8"
Actual
Aperture
15.98" / 406mm 11.97" / 304mm 9.84" / 250mm 7.87" / 200mm
Focal
Length
1800mm 1500mm 1250mm 1200mm
Focal
Ratio
f/4.5 f/5 f/5 f/6
Thickness
of Primary
45mm 35mm 35mm 25mm
Weight of
Primary
28.9 lbs 14.3 lbs 9.2 lbs 3.9 lbs
Secondary
Aperture
88mm 70mm 63mm 50mm
Weight of
Secondary
14.8 oz 5.6 oz 4.4 oz 2.4 oz

 

Primary Parabolic Mirrors
Secondary Flat Mirrors
 
Add Center Spot on 12"/16" Mirror
At the time of mirror purchase only



MIRCTR1216
$19

Buy Now
Add Center Spot
on 8"/10" Mirror

At the time of mirror purchase only



MIRCTR0812
$15

Buy Now

Primary Mirror Center Spot for GSO Mirrors

Add a center spot on the primary mirror of a GSO mirror set (above) at the time of purchase.


What is BK7 Glass?

BK7 is a barium borosilicate optical glass known for its high transmission and clean, clear appearance.  It is by far the most common material for many optical glass applications, because it offers good optical properties and a reasonable price.  It's used often as a standard of comparison for other glass materials.


Customer Comments

No comments at this time.


Frequently Asked Questions (FAQ)


Q. Questions?
A. No FAQs at this time.  Let us know if you have any suggestions.