All Farpoint Products are made in the USA at our facilities in Gold River, California.
How to select and fit a focus mask for your telescope:
In 2009, George Carey, an amateur telescope maker and astronomer from the UK, published a modification of previous focus mask designs to make a much more sensitive version of the device. This focus mask allows you quickly, easily and precisely focus your DSLR camera, webcam or CCD camera for astrophotography. The method is simple, very intuitive, and the device has universally been named after the inventor: The "Carey Mask".
Attach your camera to the telescope, center a fairly bright star in your telescope and achieve a rough focus. Then place the mask over the front aperture of your telescope by “hanging” it on the plastic screws from the front dew shield. Take a short exposure. The image of the star will show diffraction spikes.
The Bahtinov Mask requires you to judge when the central spike is midway between the two angle spikes. This is quite easy to do, but there is still a little uncertainty in determining the exact center alignment, especially when viewing in a DSLR viewfinder.
With the Carey mask the central spike idea has been abandoned. The angle between spikes has been considerably reduced. Instead of two sloping sets of slits and one central set, there are four sets of slits, with a small angle difference on each side of the mask as shown in the image below.
The diffraction pattern produced is two overlapping 'X' shapes with slightly differing angles, and at perfect focus the Xs will be symmetrical.
Inside and outside focus the Xs will be displaced. Because the angle of each X is slightly different, it will be easy to spot when out of focus, and also which way focus should be altered.
This animation shows focus being reached.
Farpoint manufactures this "lifesaving" astrophotography tool out of virtually indestructible ABS plastic, which comes in two major types and in a range of sizes. The mask pictured below left is a general purpose mask designed to fit refractors and Newtonian telescopes. The mask pictured below right is designed to fit Schmidt-Cassegrain telescopes. Both types of mask are available in a range of sizes to cover your imaging needs.
Levenhuk Sherman BASE 8x42 Binoculars are the perfect device for observations in daytime, in the evening or at dusk. Thanks to their light-gathering optics, you get a bright and sharp picture even in dim light conditions.
T-adapter for 23.2mm (0.91") to M42x0.75 male thread, fit for microscopes with standard 23.2mm focusers
Made of machined anodized aluminum, the inside of the adapter is fully baffled to minimize reflections
Connects with specific camera brand's T-ring adapters (sold separately) to connect your 23.2mm microscope focusers to your Nikon/Canon/Sony/Olympus/Panasonic etc. cameras
กล้องดูดาว Sharpstar 76mm 76EDPH f/5.5 ED Triplet Apo Refractor Telescope สีแดง
Sharpstar has been making refractors for many years for well-known worldwide astronomy vendors, and they’re now marketing their own premium apochromatic refractors at a surprisingly affordable price. The Sharpstar 76EDPH is the second in their series of instruments under the Sharpstar brand that’s quickly gaining a reputation for precision instruments for visual observation and astrophotography.
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.