Accessories

Astro-Physics

130GTX and 130EDFGT Tube Cover for Focuser End of the Tube (T13012)

Threaded machined aluminum cover for the focuser end of the maintube of the 130 StarFire GTX (130GTX

Astro-Physics

130GTX and 130EDFGT Focuser Cover, Felted (T13014F-B)

Felt-lined, machined aluminum cover for the focuser of the 130 StarFire GTX (130GTX) and 130 StarFir

Astro-Physics

16.0mm Backfocus Spacer - part of QUADTCC-TEC180 (A5023)

This 16.0mm adapter is supplied with the QUADTCC-TEC180. You may purchase it separately to adapt the

Astro-Physics

17.0mm Backfocus Spacer - part of QUADTCC-TEC160 (A5022)

This 17.0mm adapter is supplied with the QUADTCC-TEC160. You may purchase it separately to adapt the

Astro-Physics

18.3mm Backfocus Spacer - part of 160FF and QUADTCC-TEC140 (A2680)

This 18.3mm adapter is supplied with the QUADTCC-TEC140. You may purchase it separately to adapt the

Astro-Physics

2" Adapter for to use SCT accessories - for 2.7" drawtubes (ADA204)

If you have thread-on accessories for an SCT and own one of our refractors, a Ritchey-Chretien with

Astro-Physics

2" Adapter with Brass Locking Ring (ADA2003A)

Custom CNC machined thumbscrews provide an elegant update to our 2" compression adapter. It features

Astro-Physics

2" Advanced Convertible Photo-Visual Barlow (BARADV)

Our Advanced Convertible Barlow has a unique design that provides several configurations to increase

Baader Planetarium

2" Color Filter Set (BPCF2)

These colored filter sets are available in two sizes" 1.25" (BPCF125) and 2" (BPCF2) Fits 2" thre

Baader Planetarium

2" Contrast Booster Filter (BPCB2)

This filter is available in two sizes: 12.5" (BPCB125) and 2" (BPCB2). 2" Contrast Booster Filter

Baader Planetarium

2" Deluxe Clamp Eyepiece Holder for SCTs (BP17)

SCT visual back with 2" SCT internal female thread but without 2" Filter holder Precise 2" clamp

Astro-Physics

2" Extension Tube with Brass Locking Ring, 1.75" long, 48mm threads (ADA202)

This extension slips into a 2" opening and can be used with 2" accessories or the 1.25" adapter. It

Astro-Physics

2" Extension Tube with Brass Locking Ring, 3.6" long (EXTTLR)

Use this extension when you require additional length. It slips into a 2" opening and can be used wi

Baader Planetarium

2" Narrowband O-III Filter (BPO32)

We offer 1.25" (BPO3125) and 2" (BPO32) versions of this filter. Ultra hard and bright O-III visual

Baader Planetarium

2" Neodymium Moon & Skyglow Filter (BPMS2)

This filter is available in 1.25" (BPMS125) and 2" (BPMS2) sizes . The best visual and photograph

Baader Planetarium

2" Neutral Density 1.8 Filter. Must be used with white light solar filter. (BPND18)

Baader 2" Neutral Density Filter with optical density ND 1.8 - Transmission 1.5% - Reduction facto

Baader Planetarium

2" Newtonian Glaspath & Coma Corrector - 1.7x for Binocular Viewer (BPNGCC17)

This Glaspath and Coma Corrector was designed for Newtonians in order to use the Baader Planetarium

Baader Planetarium

2" Single Polarizing Filter (BPPOL2)

These filters come in two sizes: 1.25" (BPPOL125) and 2" (BPPOL2) Baader 1.25" Polarizing Filter

Baader Planetarium

2" Solar Continuum Filter MUST be used with a white-light filter in front of main telescope optics (BPSC2)

This filter is available in 1.25" (BPSC125) or 2" (BPSC2 sizes. Baader 1.25" Solar Continuum Filter

Baader Planetarium

2" U-Filter, Venus Filter (BPU2)

Baader U-Filter (Venus and UV) 350nm. Transmission peak approx. 80% at 350nm, bandwidth 60nm (320

Baader Planetarium

2" UHC-S High Transmission Nebula Filter (BPUHCS2)

This filter is available in 1.25" (BPUHCS125) and 2" (BPUHCS2) sizes. Visual and photographic UHC

Baader Planetarium

2" UV-IR Rejection Filter (BPUVIR2)

This filter is available in two sizes: 1.25" (BPUVIR125) and 2" (BPUVIR2) sizes. Blocks UV below

Astro-Physics

2" Visual back threads onto 3.25" rear cell of the 10" or larger Meade SCTs. (ADASCTLM)

This 2" visual back threads onto the rear cell of 10" or larger Meade SCTs with 3.25" male threads o

Astro-Physics

2" Visual Back threads onto 9.25" or smaller SCT standard rear cell (ADASCT)

This visual back fits rear cells that have a 2" opening with a 24 TPI (threads per inch) male thread

Astro-Physics

2" Visual Back threads onto the 3.25" rear cell of the Celestron 11" or 14" SCTs. (ADASCTLC)

This 2" visual back threads onto the rear cell of 10" to 14" Celestron SCTs with 3.25" male threads

Astro-Physics

2" x 1/2" Barrel Extension with 48mm Threads (A3703)

This 2" x ½" Barrel Extension is a more robust version of T-thread extension tubes. It uses 4

Baader Planetarium

2"/2" Inverter Ring with 48mm Filter Thread (BP2/21)

Converts 2" female into 2" male thread Internal M48 Filter thread for 2" filter

Astro-Physics

2"/T-2 Adapter attaches to T-thread (ADAT2)

This 2"/T-2 Adapter with brass locking ring is manufactured by Astro-Physics. It is used with the Ba

Astro-Physics

2"/T-2 Tapered Nosepiece for CCD Cameras, SBIG ST7, Baader Planetarium Giant Binocular Viewer or any item with T-2 threads (AP16T)

Our 2"/T-2 Secure-Grip Nosepiece for CCD Cameras, Baader Planetarium Mark V Binocular Viewer or any

Astro-Physics

2.5" DoveLoc End Cap for AP 2.7" Focusers, Allows Traveler to be used with 92FF and 92TCC. (EC2725)

Astro-Physics

2.7" Adapter-threads onto 3.25" back of most 10+" Meade SCTs to use Astro-Physics 2.7" Accessories (ADASCTLM27)

This 2.7" threaded back allows the use of Astro-Physics 2.7" accessories with 10", 12" & 14" Mea

Astro-Physics

2.7" Adapter-threads onto 3.25" rear cell of 11" & 14" Celestron SCTs to use Astro-Physics 2.7" Accessories (ADASCTLC27)

This 2.7" threaded back allows the use of Astro-Physics 2.7" accessories with 11" & 14" Celestro

Astro-Physics

2.7" Field Flattener w/ 6x7cm Pentax Prime Focus Camera Adapter - 105 Traveler EDT/EDFS (67PF462)

Our 2.7" Field Flattener can be coupled to a variety of different cameras for truly superb photograp

Astro-Physics

2.7" Field Flattener w/ 6x7cm Pentax Prime Focus Camera Adapter - 130 f/6.3 StarFire GT (67PF562)

Our 2.7" Field Flattener (67PF562) can be coupled to a variety of different cameras for truly superb

Astro-Physics

2.7" Photo-Visual Telecompressor (0.75x) (27TVPH)

We have increased the versatility of our telecompressor (also called a focal reducer) by designing a

Astro-Physics

2.7" Prime Focus Field Flattener for 140 f/7.5 StarFire EDF, 130 f/8.35 StarFire EDT, 155 f/7 StarFire EDFS, Star130ED, Star12ED, 5" f/8 StarFire and 5" f/8 Standard (67PF582)

Our 2.7" Field Flattener can be coupled to a variety of different cameras for truly superb photograp

Astro-Physics

2.7" Thread-On Extensions for Astro-Physics Focusers and Accessories (A3502-A)

This series of extensions is designed to utilize the robust 2.7" Astro-Physics thread size, while pr

Astro-Physics

2.7" Threaded Cover (for Female Threads). Fits 2.7" Drawtube, 27TVPH, and all other accessories with 2.7" female threads (A1005)

This versatile cover was designed to protect your focuser from gathering dust when not in use. It ha

Astro-Physics

22.1mm Backfocus Spacer - part of 13035FF & QUADTCC-AP130 (A5020)

This 22.1mm adapter is supplied with the QUADTCC-AP130. You may purchase it separately to adapt the

Astro-Physics

3.5" Focuser to 2.7" Adapter. Net Spacing Distance: 0.281" (7.14mm). (A5012)

The A5012 is a 3.5” circular dovetail to 2.7” AP thread adapter used with the 3.5”