Quick view Astro-Physics 254mm f14.5 Maksutov-Cassegrain (254F145MC) Our new 254 mm f/14.5 Maksutov-Cassegrain generated a lot of excitement when we introduced the proto MSRP: Was: Now: $22,000.00
Quick view Future Technology Devices International FTDI USB-to-Single Port Serial Adapter (USB1PFTDI) We strongly recommend that you use a genuine FTDI USB-to-Serial Adapter. Do not use adapters that cl MSRP: Was: Now: $48.00 Add to Cart
Quick view Baader Planetarium Click-Lock Eyepiece Clamp 1.25"/T-2 with built-in diopter-adjustment (BP8) Precise focusing eyepiece holder 1¼"/T-2 (5mm focus travel) Requires only a slight turn of MSRP: Was: Now: $94.00 Add to Cart
Quick view Baader Planetarium Baader Heavy-Duty Quick Changing System, includes BP6A and BP7 (BP6A/7) Heavy duty quick change system - clamping for heavy accessories with large brass clamp T-Quick Ch MSRP: Was: Now: $136.00 Add to Cart
Quick view Baader Planetarium 1.25" Double T-2 Filter Holder (BP31) Filter holder with T-2 thread and M28.5 internal thread. A continuous external T-2 thread with an MSRP: Was: Now: $48.00 Add to Cart
Quick view Baader Planetarium Expansion Ring T-2 /48mm with 2.5mm optical path length (BP29) T-2 / M48 extension converts M48 female into T-2 female thread) Focuser side 48mm / 2" external t MSRP: Was: Now: $39.00 Add to Cart
Quick view Baader Planetarium Expansion Ring T-2i /2"a with 1mm optical path length (BP28) Adapter Ring 2" outer thread to T-2 internal thread Advances T-2 male on 2" male Only 1mm optica MSRP: Was: Now: $45.00 Add to Cart
Quick view Baader Planetarium Adapter 2" (male) /T-2 (male) with M48 Thread (BP27) Adapter ring with 2" external thread and T-2 external thread Changes a 2" (50.8mm) inner thread t MSRP: Was: Now: $45.00 Add to Cart
Quick view Baader Planetarium T-2/T-2 Inverter Ring (BP26) Changes a T-2 female into a T-2 male thread Optical path length is zero. Free of reflections MSRP: Was: Now: $36.00 Add to Cart
Quick view Baader Planetarium Variable Locking/Sliding T-2 Focuser (BP24) For 1.25" eyepieces or OAG cameras. 10mm focus travel Telescope side T-2 (M42x0.75 internal threa MSRP: Was: Now: $44.00 Add to Cart
Quick view Baader Planetarium Russian Camera Adapter M42/T-2 (BP23) M42x1 internal thread with T-2 external thread Transition adaptor for all Russian threaded M42x1 MSRP: Was: Now: $44.00 Add to Cart
Quick view Baader Planetarium Adapter M43/T-2, Vixen (BP22) Telescope side internal thread 43mm (Vixen) Focuser side T-2 external thread Shortest connection MSRP: Was: Now: $45.00 Add to Cart
Quick view Baader Planetarium C8 T-Adapter, short/16mm (BP21) A widefield camera adapter for all Schmidt-Cassegrain Celestron/Meade telescope tubes. Allows T-2 MSRP: Was: Now: $57.00 Add to Cart
Quick view 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 MSRP: Was: Now: $44.00 Add to Cart
Quick view 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 MSRP: Was: Now: $64.00
Quick view Baader Planetarium Reducer 2"/ 1.25" with T-2 Thread (BP15) 2" external thread to 1 ¼" internal thread reducter / eyepiece adaptor Strong grip with 2 MSRP: Was: Now: $52.00 Add to Cart
Quick view Baader Planetarium Nose piece 1.25"/T-2 (BP14) 1¼" nosepiece with T-2 thread and M28.5 filterholder Barrel with 24mm Insertion and securi MSRP: Was: Now: $45.00 Add to Cart
Quick view Baader Planetarium Camera Adapter for Zeiss M44/T-2 (BP13) Combo of M44 male and T-2 male threads T-2 (M42 x 0.75) thread To connect T-2 accessories / came MSRP: Was: Now: $45.00 Add to Cart
Quick view TeleVue TeleVue Starbeam Reflex Finder with Flip Mirror. Needs QRHANDLE, QRBASE (or earlier version) or ACSD07 with SBV08 (STARFMD) Starbeam's unique flip mirror provides comfort and flexibility for viewing at any angle - from strai MSRP: Was: Now: $240.00 Add to Cart
Quick view Astro-Physics 130mm f6.3 StarFire GTX "Gran Turismo" with 3.5" Focuser (130GTX) Astro-Physics introduced the re-imagined "Gran Turismo" at the Northeast Astronomy Forum (NEAF) on A MSRP: Was: Now: $7,950.00
Quick view Astro-Physics Astro-Physics Embroidered Knit Cap, Dark Ash (APCAPW) Keep Warm with our Knit Winter Cap with Cuff What better way for an astronomer to stay warm on thos MSRP: Was: Now: $15.00 Add to Cart
Quick view Astro-Physics Astro-Physics Embroidered Cap (APCAPES) These attractive ball caps feature the Astro-Physics logo beautifully embroidered across the front. MSRP: Was: Now: $22.00 Add to Cart
Quick view Baader Planetarium 2" U-Filter, Venus Filter (BPU2) Baader U-Filter (Venus and UV) 350nm. Transmission peak approx. 80% at 350nm, bandwidth 60nm (320 MSRP: Was: Now: $355.00 Add to Cart
Quick view Baader Planetarium 2" Single Polarizing Filter (BPPOL2) A polarizing filter is an excellent filter choice for lunar viewing. It provides variable neutral de MSRP: Was: Now: $87.00 Add to Cart
Quick view Baader Planetarium 1.25" Single Polarizing Filter (BPPOL125) A polarizing filter is an excellent filter choice for lunar viewing. It provides variable neutral de MSRP: Was: Now: $58.00 Add to Cart
Quick view 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 visu MSRP: Was: Now: $185.00 Add to Cart
Quick view 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 MSRP: Was: Now: $119.00
Quick view Baader Planetarium 1.25" Neodymium Moon & Skyglow Filter (BPMS125) This filter is available in 1.25" (BPMS125) and 2" (BPMS2) sizes . The best visual and photograph MSRP: Was: Now: $74.00 Add to Cart
Quick view 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 MSRP: Was: Now: $405.00 Add to Cart
Quick view Baader Planetarium 1.25" Color Filter Set (BPCF125) These colored filter sets are available in two sizes" 1.25" (BPCF125) and 2" (BPCF2) Fits 1&frac1 MSRP: Was: Now: $285.00 Add to Cart
Quick view Baader Planetarium 2" Contrast Booster Filter (BPCB2) This filter is available in two sizes: 12.5" (BPCB125) and 2" (BPCB2). 2" Contrast Booster Filter MSRP: Was: Now: $115.00 Add to Cart
Quick view Baader Planetarium 1.25" Contrast Booster Filter (BPCB125) This filter is available in two sizes: 12.5" (BPCB125) and 2" (BPCB2). 1¼" Contrast Booste MSRP: Was: Now: $74.00
Quick view Kendrick Astro Instruments Kendrick Sun Finder (KSF6000) The Kendrick Sun Finder makes locating the sun and centering it in your eyepiece a cinch…no m MSRP: Was: Now: $36.00 Add to Cart
Quick view Kendrick Astro Instruments Kendrick Visual AstroSolar Filter for 105mm Traveler. Fits 117-130mm OD, 107mm filter aperture. (KS6006-A) The current solar maximum cycle will continue to peak throughout 2024 and beyond offering sunspots t MSRP: Was: Now: $85.00 Add to Cart
Quick view Kendrick Astro Instruments Kendrick Visual AstroSolar Filter. Fits 288mm-298mm OD, 253mm filter aperture. (KS6016) The current solar maximum cycle will continue to peak throughout 2024 and beyond offering sunspots t MSRP: Was: Now: $156.00 Add to Cart
Quick view 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 MSRP: Was: Now: $79.00 Add to Cart
Quick view Baader Planetarium Baader 80mm AstroSolar ASTF Filter, fits 100-140mm OD (ASTF-80) The current solar maximum cycle will continue to peak throughout 2024 and beyond offering sunspots t MSRP: Was: Now: $75.00
Quick view Baader Planetarium Baader 200mm AstroSolar ASTF Filter, fits 220-260mm OD (ASTF-200) The current solar maximum cycle will continue to peak throughout 2024 and beyond offering sunspots t MSRP: Was: Now: $150.00
Quick view Baader Planetarium Baader 180mm AstroSolar ASTF Filter, fits 200-240mm OD (ASTF-180) The current solar maximum cycle will continue to peak throughout 2024 and beyond offering sunspots t MSRP: Was: Now: $140.00 Add to Cart
Quick view Baader Planetarium Baader 160mm AstroSolar ASTF Filter, fits 180-220mm OD (ASTF-160) The current solar maximum cycle will continue to peak throughout 2024 and beyond offering sunspots t MSRP: Was: Now: $127.00 Add to Cart
