William Optics FLAT6AIII Adjustable Field Flattener

2" x0.8 reducer APO adjustable field flattener, It has M63 threads for GT71 /GT81 /Z103 /Z81

• Refine your flat-field performance.
• Fully multi-coated Ohara glass optics.
• Reducing factor: 0.8X.

Gran Turismo 81 , f/5.9 OTA. FPL53 three-element APO, 2.5” R&P Focuser in Gold

• GT81 APO
• 2" & 1.25" Adapter Included
• Bahtinov Mask Included
• STM Multi-Coated Lenses
• f/5.9
• This is the Gold version

Optical Performance

The Gran Turismo 81 is a Three Element Designed APO refractor. Using FPL-53 glass this telescope provides excellent aberration correction.

Details and Features

2.5" R&P Focuser

The 2.5" R&P Focuser is smooth, stable, and reliable! No image shifting!

New Designed Rotator

William Optics designed camera angle rotator. Smooth and stable.

CNC Handle Bar

Made by CNC with anodizing. Strong and nice look!

Bahtinov Mask

World first built in clear Bahtinov mask!

William Optics UniGuide 50mm Slide-Base Guide Scope with 1.25" RotoLock - Gold - M-G50PB-WG

• Get in perfect focus with this high-quality William Optics Guide Scope.
• 1.25-inch RotoLock design for smooth and accurate focusing.
• This is the Gold version.

• Focal Length: 200 mm (7.87")

• Focal Ratio: f/4

• Diameter: 50 mm

• Total Guide Scope Length: 265 mm

• Included: 1.25" RotoLock

• Focusing: Front Focuser System w. Focus Lock Ring

• Weight: 515g (1.14 lb)

William Optics UniGuide 50mm Slide-Base Guide Scope with 1.25" RotoLock - Space Gray - M-G50PB-WG

• Get in perfect focus with this high-quality William Optics Guide Scope.
• 1.25-inch RotoLock design for smooth and accurate focusing.
• This is the Space Gray version.

• Focal Length: 200 mm (7.87")

• Focal Ratio: f/4

• Diameter: 50 mm

• Total Guide Scope Length: 265 mm

• Included: 1.25" RotoLock

• Focusing: Front Focuser System w. Focus Lock Ring

• Weight: 515g (1.14 lb)

Astrodon 5nm H-alpha Filter is the perfect tool for your imaging set up in order to knockout Hydrogen gas and pick up faint details

Astrodon HA5_36R H-Alpha Narrowband Filter for Astrophotography

♦ 36mm Narrowband Filter - unmounted

♦ Emission line: H-Alpha 5nm bandwidth

♦ Thickness: 3mm - parfokal with all other Astrodon filters

♦ Transmission: better than 90%

Upgrade your astrophotography setup with the refined ZWO EFW 8-Position Electronic Filter Wheel.

• 8 Slots Capacity: Accommodates 31.75 mm (1.25″) mounted or 31 mm unmounted filters.
• Advanced Anti-Light-Leak Design: Upgraded slot-fit chassis, dual light-blocking pads, and fully enclosed motor compartment.
• Modern USB-C Interface: Reliable plug-and-play connectivity without needing external power supplies (draws only 120 mA @ 5V).
• Ultra-Lightweight & Rigid: CNC-machined aircraft-grade aluminum alloy body weighing just 400 g (14 oz) with an effective thickness of 20 mm (0.79 in).
• High-Precision Stepper Motor: Japanese NPM motor providing smooth, bidirectional rotation and precise positioning.
• Full Automation Support: Seamlessly integrates with ASIAIR, ASIStudio, ASCOM, and ZWO SDK.

(سلسلة العقول الذكية كتاب كيف تعمل الأشياء (علم الفلك للمبتدئين

The Small Off-Axis Guider by QHY has 35 mm to the center point. It is a thin and solid design only being 10 mm thick. Adding an M42 thread adapter ring will add 3 mm for a total thickness of 13 mm. There are six 3 mm through holes in the OAG for direct connection to the QH-QHYCFW2 and QHY A-series camera.

The prism position can be adjusted and can be locked down to fix its position. The prism is 8 mm x 8 mm size and the aperture between the prism and mirror is 8 mm in diameter. The QH-QHYOAG has a multi-thread 1.25-inch focuser build in which has a locking thumbscrew to hold the guide camera after focusing.

• Extreme Payload & Lightweight: Weighs just 2.3 kg (5.07 lbs) while supporting an incredible load capacity of up to 50 kg (110 lbs).
• High-Rigidity Carbon Fiber: Dual-section legs with a 40 mm (1.5 in) upper and 36 mm (1.4 in) lower section diameter for maximum stability and shock absorption.
• Tailored for ZWO Mounts: Top plate features 3 precise alignment mounting points perfectly designed for ZWO AM5, AM5N, and AM3 harmonic drive mounts.
• Universal Compatibility: Compatible with third-party mounts including iOptron (GEM45, CEM40), Rainbow Astro 135E, Sky-Watcher AZ-GTi, and Celestron via a reversible 9.52 mm (3/8 in) locking shaft.
• Enhanced Stability Inclusions: Comes complete with a leg spreader plate, weight sandbag, and interchangeable metal spiked feet for solid grounding on any terrain.

• High Payload-to-Weight Ratio: Mount head weighs only 4.5 kg (10 lbs) yet supports up to 12.7 kg (28 lbs) payload.
• Precision Tracking & Alignment: Features low periodic error (< ±12 arcsec), built-in Wi-Fi, and AccuAlign™ optical polar scope.
• Upgraded LiteRoc Tripod & Case: Includes a heavy-duty 7.5 kg (16.5 lbs) stainless steel LiteRoc tripod and a custom die-cast aluminum hard carrying case.