William Optics SpaceCat 51 250mm f/4

William Optics Camera Angle Rotator for 2.5" M63 Focuser

Fits :
Z73, Z103, Z126, GT71, new 2018 GT81 and all other brand Focuser with M63 threads.

Optolong Variable Polarizing Filter - 2"

Antlia 2" Filter Holder (supports mounted 1.25" filter)

- Can be used with Antlia's Filter Drawer System (see below)
- Holds 1.25" mounted filter in 2" holder
- This 2" holder can then be screwed into filter slider like a normal 2" filter
- Requires 1x B-2INCH slider
- Weight: 20g

ฟอกัสเซอร์ GSO 2" SCT Crayford focuser สำหรับกล้องดูดาวแบบ Schidmt Cassegrain

CNC machined from aluminum and anodized black, this focuser will screw on to the rear cell of any standard SCT telescopes sold by Meade and Celestron having a standard SCT thread. The standard SCT rear cell thread is 2" diameter male thread with a thread pitch of 24TPI (threads per inch).

ฟิลเตอร์ SVBONY IR Pass 685nm Filter, 1.25"

• Reduction of seeing effects, heightened contrast
• Great asset for daylight IR-imaging with a digital camera lessening seeing effects
• Improved contrast when utilized for lunar and planetary imaging
• Darken twilight sky background, allowing images of moon and planets to be taken at dawn or dusk
• Made with high-end glass: multi-coated with ion-assisted deposition technology to ensure scratch resistance and stability on the central wavelength
• Filter cell made of lightweight, strong metal. CNC machined, sand-blasted, black anodized, then laser engraved.
• Super thin filter cell with clear aperture of 26mm (for 1.25" version) or 44mm (2" version)
• Can also be used for nature photography in the Near-IR, revealing stunning differences in plants, sky, and clouds (requires the use of a camera that is sensitive to IR above 670nm, such as a modified DSLR or webcam)
• Presented in a high-quality filter box

• Quickly capture dark frames to optimize photo quality
• Opaque - blocks all light from the imaging camera sensor. Help remove dark currents - essential for astrophotography
• Easily eliminate camera noise and hot pixels
• Dark frame acquisition helps remedy such noise and "hot pixels" by canceling out these disruptive effects during image processing
• Threaded and can be directly connected to your filter wheelfor fast conversion between different filters;
• Made of metal for durability. High quality packing box includes foam-lined plastic case

ZWO Spare Filter Holder (2nd Gen) for FD-Nikon / FD-EOS / FD-M54-II / FD-M42-II

New 2″ filter drawer featuring the anti-light-leaking design that can effectively solve the light leaking issue under long exposure.

Sky-Watcher Evostar 72ED Apo Refractor on AZGTi mount with Star Adventure Tripod

• AZ-GTi mount Rated "Hot Product of 2019" by Sky&Telescope magazine
• Doublet apochromatic optical design
• Two-element, air-spaced optical assembly minimizes false color
• 72mm aperture, 420mm focal length, f/5.8 focal ratio
• 2-inch dual-speed Crayford-style focuser
• Aluminum tube coated with glossy, black diamond metal-flake finish
• Multi-purpose alt-azimuth mount
• Built-in Wi-Fi
• Spring loaded worm gears
• SynScan GoTo telescope mount with 42,900+ object database
• Controlled with SynScan Pro app for iOS and Android
• Freedom Find™ dual-encoder technology
• Adjustable height aluminum tripod with 1.25-inch diameter legs
• DC operation (batteries not included)
• Included accessories: tube rings, a Vixen-style dovetail and a foam-lined aluminum case. The AZ-GTi comes with the mount head, pier extension, and tripod.

กล้องดูดาว Sky-Watcher Skyliner 10" Classic 250P Dobsonian Telescope SKDOB10

• Affordable, large 250mm aperture delivers stunning viewing experience
• 56% brighter than the Classic 200P Dobsonian
• Patented tension control handle allows for precise slewing and maximum stability
• Parabolic primary mirror with Radiant™ Aluminum Quartz (RAQ™)
• Heavy-duty rocker box with Teflon™ bearings
• 2-inch Crayford-style focuser with 1.25-inch adapter allows for use of nearly any eyepiece