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.
Garmin Micro Mini USB ANT+ Stick for Forerunner 50 FR60 310 405 405CX 410 610
Plug the ANT+ Stick into your computer's USB port and it will automatically receive your activity data when your compatible fitness device is within range. You can transfer your data directly to Garmin Connect™ (a web-based community of Garmin users who track, explore and share activities) or Garmin Training Center (software to analyze activities and create workouts).
CSR Bluetooth 4.0 USB adapter (CSR chipset) รองรับ Windows 98/ME/2000/XP /Vista/7/8
ต่ออุปกรณ์เสริม bluetooth ของคุณเข้ากับ laptop ผ่านสัญญาณ bluetooth ได้สูงสุดที่เวอร์ชั่น Bluetooth 4.0 Class 2
รองรับโทรศัพท์มือถือ เครื่องพิมย์ หูฟังไร้สายทั้งแบบโมโนและสเตริโอ และอุปกรณ์ bluetooth ver 1.x, 2.x, 3.x, 4.0 แบบมาตรฐานทั่วไป
รองรับเทคโนโลยี bluetooth 4.0 Class 2 สเปคล่าสุดที่ประหยัดพลังงาน (v4.0 Class 2 with low energy technology) คุณจึงใช้อุปกรณ์ได้นานขึ้นโดยไม่ต้องชาร์จถ่านบ่อยๆ
ใช้ CSR chipset ซึ่งเป็น chipset ที่ได้รับการยอมรับอย่างมากในอุตสาหกรรม bluetooth
ASI6200MM/MC Pro uses Sony’s back-illuminated IMX455 Full Frame format native 16-bit ADC sensor. It has3.76µm, ultra-low 0.86e readout noise and an innovative breakthrough resulting in zero amp-glow.
Note:
External power supplies are needed for all ASl-cooled cameras. We recommend you use a 12V@3A~5A DC adapter (D5.5×2.1mm, center pole positive) or a lithium battery with 11-14V to power the camera. Be aware that using a power supply out of this voltage range will probably lead to irreparable damage to the camera.
Again very satisfying to receive this scope, fast and in good order with competitive price. I use this scope with the zwo2600mc pro I purchased last year with thaiexite. Perfect combination with Optolong Quad ultimate filter. Ashame I can't show pictures here.
Reply by Thai Excite: Thank you, Kornelis, for the pictures - they are now shown on product page.