Farpoint Bahtinov Focus mask, FP412 - fits Celestron 11" SCT.

Farpoint Bahtinov Focus mask, FP412 - fits Celestron 11" SCT. | Fast Easy Focus for Your astrophotos a lifesaving Tool for Focusing Your Astro Camera or DSLR.
- Bahtinov focus mask, fits Celestron 11" SCT without Fastar or Hyperstar. | Fast Easy focus for your astrophotos a lifesaving tool for focusing your astro camera or dslr.
- For older model C11" SCT...newer Fastar or Hyperstar ready scopes need our product FP412H. Bahtinov masks are easy to fit and use and make focusing a snap.
- Works with all electronic imaging devices. Includes DSLR cameras, modified DSLR cameras, CCD astro-imagers, CMOS astro-images, video cameras, low light systems etc.
- Use by simply placing the Bahtinov focus mask over the end of your telescope, record a quick image of a bright star, adjust focus and repeat two or three times until perfect focus is achieved.
- Made in the USA by Farpoint Astro. Made in America, by Americans, using American made materials and suppliers, supporting our economy. Buy American please.
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. Take a short exposure. The image of the star will show diffraction spikes. The "center" set will most likely be shifted to one side or the other. This is showing the defocus. Adjust the focus of your telescope and re-expose the star, once again showing the diffraction spike pattern. Iterate the process until you get the central diffraction spike centered against the star and the other spikes. When you achieve a symmetrical pattern, you have achieved the best possible focus. Remove the mask, center your target object and take your images!
Country USA
Brand Farpoint
Manufacturer Farpoint Astronomical Research
Binding Electronics
ItemPartNumber 412
Model FP412
UPCs 022099906940
EANs 0022099906940
ReleaseDate 0000-00-00

Country	USA
Brand	Farpoint
Manufacturer	Farpoint Astronomical Research
Binding	Electronics
ItemPartNumber	412
Model	FP412
UPCs	022099906940
EANs	0022099906940
ReleaseDate	0000-00-00

Farpoint Bahtinov Focus mask, FP412 - fits Celestron 11" SCT. | Fast Easy Focus for Your astrophotos a lifesaving Tool for Focusing Your Astro Camera or DSLR.

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