Skip to content

All categories

Call Us

+1 208-939-2141

+1 208-939-2141

My Quote

Home
Accessories
- Telescope Accessories
- Optical Accessories
- Adapters and Imaging Accessories
- Mount Accessories
- Planewave Accessories
- The Original: Baader Planetarium
- Sporting Optics Accessories
Filters
Solar Observation
Spectroscopy
- DADOS Slit-Spectrograph
Mounts and Tripods
Telescopes
Sporting Optics
Dealer Locator
Contact Us

My Quote

Home
Accessories
Filters
Solar Observation
Spectroscopy
- DADOS Slit-Spectrograph
Mounts and Tripods
Telescopes
Sporting Optics
Dealer Locator
Contact Us

Home Optical Accessories

Optical Accessories

Optical Accessories

Filters

33mm Remove filter
Clear all

$ From

$ To

In stock
Out of stock

Baader Planetarium
Celestron

Accessories
Filters

3.1mm - 7mm
7.1mm - 11mm
11.1mm - 15mm
15.1mm - 19mm
19.1mm - 23mm
23.1mm - 27mm
27.1mm - 31mm
31.1mm - 35mm
35.1mm & Up
Mixed
Zoom

24mm
25mm
26mm
28mm
31mm
31.75mm
32mm
33mm
34mm
37mm
38mm
41.5mm
43mm
44mm
46mm
46.6mm
47.5mm
49mm
50mm
50.8mm
52mm
53mm
61mm
72mm

Aspheric
Barlow
Binoviewer
Coma Corrector
Erecting Prism
Field Flattener
Glasspath Corrector
Guider
Mirror Diagnal
Modular
Orthoscopic
Plossl
Star Diagnal Prism
Telescompressor
Wide Angle

0mm - 10mm
10.1mm - 20mm
20.1mm - 30mm
30.1mm - 40mm
40.1mm - 50mm
50.1mm - 60mm
60.1mm - 70mm
80.1mm - 90mm
90.1mm - 100mm
110.1mm - 120mm
120.1mm - 130mm
Variable

34.8mm
41mm
45mm
54mm
55mm
57mm
58mm
59.5mm
60mm
64mm
68mm
70mm
75mm
80mm
85mm

Classic (Q-Turret)
Hyperion
Morpheus

40° - 70°
71° - 90°
Variable

Round

Thread
Clamp
Dovetail Ring Clamp
Barrel
1 ¼"
2" (50.8mm)
M28.5
M34
M43
M44
M48
M55
M62
M68 x 1
M72
S52
SP54
T-1 (M42 x 1)
T-2 (M42 x 0.75)

Thread
Clamp
Dovetail Ring
Dovetail Ring Clamp
Barrel
Bayonet
1 3/8"
1 ¼"
1.4" (35mm)
2" (50.8mm)
M28
M28.5
M43
M44
M46
M48
M49
M52
M55
M58
M62
M67
M68 x 1
M72
M77
M82
S52
S58
SP54
T-2 (M42 x 0.75)

Baader ClickLock
Camera Adapter
Changer Adapter
Expanding Piece
Extension
Eyecup
Eyepiece Clamp
Filter Holder
Reducing Piece
Variable

Bandpass
Mounted

Sort by

View as

33mm Remove filter
Clear all

Original price $299.00 - Original price $299.00

Original price

$299.00

$299.00 - $299.00

Current price $299.00

| /

T-2 BBHS ® Mirror Diagonal

Baader Planetarium

Description T-2 BBHS star diagonal withT-2 threads for compatibility with all Baader's Astro T2 system of parts Provides high reflectance over a w...

View full details

Sort by

You recently viewed

Our Guarantee

Alpine Astronomical was founded out of our love and interest in amateur astronomy. We stand behind what we sell and will work hard to help you with any issues. If you are not satisfied with a product, you may certainly return the item. Please see our Returns policy for specific details.

About Us

Contact Us
About Alpine Astro
About Baader Planetarium
Rocky Plains Observatory
Our Astro Images
Dealer Locator
Useful Links
Terms of Service
Refund policy

Information

Blog
Latest News
Ordering and Shipping
Terms of Service
Privacy Policy
Returns and Warranty Policies

Follow us

Email Alpine Astronomical LLC Find us on Facebook

Subscribe to our Newsletter

Subscribe to our newsletter to keep up to date with the latest news and offers.

Email address

Dealer Locator
Contact Us

Copyright © 2025 Alpine Astronomical LLC.

Powered by Shopify

Added to your cart:

** total_quantity ** | ** unit_price ** / ** unit_measure **

(-)

Cart subtotal

×

Name
Email
Phone Number
Comment

×

Success

Your Request Submitted Successfully.

×

Error

Please Wait...