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.
This T-Rings couples your Pentax 35mm camera body to a T-Adapter, Radial Guider or Tele-Extender. This accessory is required if you want to do any type of photography through a telescope or spotting scope.
รุ่นนี้เป็นรุ่น Reversible ซึ่งสามารถเสียบสาย USB ได้ทั้งสองด้าน
Product Description
Smart Charger with 4 USB Ports Finally a charger in one location that will charge all your devices. 4 USB Ports suitable for your smartphone and tablets (All Brands).
Product Specifications:
AC Cord: Approx. 1 Meter
Input: AC 100V -240V 50/60Hz
Output Power: 5V 6A
Product Features:
Smart Chip: Controls the over-temperature, over-current, overload and short circuit protection
Stops charging when the unit is fully charged
Blue LED power indicator-light indicates the power on of the device.
All four USB ports are reversible (USB cable can be inserted in both directions)
New Losmandy style dovetail from William Optics. Heavy duty design; solid build quality; beautiful aesthetics!
Designed to fit a variety of tube rings and many refractors on today's market made by William Optics, AP, Takahashi, Stellarvue, Skywatcher, Meade, and Celestron.
Plate is 400mm long by 105mm wide. Please see the third product photo above for a schematic diagram of this plate showing all measurements. Weight = 1.43 kg / 3.15 lbs.
Plate only. No additional mounting/hardware included.
ASIAIR PLUS is a smart WiFi device. It is equipped with a lightweight power management module, ample USB interfaces, and multiple dovetail mounting methods. With the rich features of the ASIAIR App, the whole procedure from device integration to image capture runs particularly smooth.
ASIAIR PLUS is the third generation of ZWO that has been continuously improved and newly designed since the first generation of ASIAIR was released in July 2018.
I just bought this telescope from Thai Excite,delivery was fast,item arrived in excellent condition.The seller was so helpful,i recommand this shop.Keep it up,you deserve a 10 out of 10.