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Larger diameter - more reach for your lenses
The 2" diameter also allows you to insert your 2'" eyepieces into the Barlow, doubling your magnification. This saves the need to purchase additional eyepieces. The large lens diameter also means you won't notice any shadows in the image.
Astrophotography with the Barlow lens
You can also use the Barlow lens for astrophotography. Especially for compact objects, a longer focal length is sometimes required to make them appear at a reasonable size in the image. The big plus: There's also no apparent shading on small image format camera chips.
Clear, starry nights can naturally be chilly in summer. This often means that there is no choice but to bundle up. This Barlow lens has been designed with a high-grip exterior to provide a good grip, meaning it's easy to handle safely even when wearing gloves.
Even more possibilities
It is not always necessary to double the focal length. It is also possible to use just a section of this Barlow lens to get a magnification factor of something like 1.5x. The lower Barlow element can simply be unscrewed and then screwed onto any 2” eyepiece. This Barlow element is properly threaded for this purpose.
There is a 2" filter thread at the bottom of the Barlow lens and step-down adapter to use your filters.
The advantages in a nutshell:
2” Barlow lens for 2” and 1.25” accessories
doubles the focal length of the telescope
ED glass element to reduce color aberrations
large lens diameter provides excellent illumination
safety slot to prevent the lens from falling out
2" filter thread
1.25" reducing sleeve for attaching 1.25" accessories
|Connection (to the telescope)
|Coating of optical system
|Number of lenses
||Barlow & Erecting Lenses
|Type of build