GSO's 1.25" 2x achromatic Barlow increases the magnification of each eyepiece and effectively doubles or triples the number of eyepieces at your disposal
Full unit increases magnification of eyepiece by 2x
Barlow element can be separated from main tube and threaded directly into a 1.25" eyepiece for approximately 1.5x increase in magnification
Low "shorty" profile maintains a comfortable viewing position
Two-element, fully-multicoated lenses with excellent color correction, sharpness, and image brightness
 
 
Specifications:
Barrel Size: 1.25 inch (31.7mm)
Magnification Factor: 2x
TypGSO's 1.25" 2x "Shorty" achromatic Barlow is an excellent accessory that allows you to effectively double the number of eyepieces in your collection. This barlow uses two-element, fully-multicoated lenses with excellent color correction and sharpness. The lens edges are blackened to maximize image contrast. The body is precision CNC-machined from aluminum and sports a handsome finish.A really nice feature of this GSO barlow is that the barlow element is housed in a separate metal cell at the bottom that can be unscrewed from the upper tube (see photos). You can then screw the barlow cell directly into 1.25" eyepieces with a standard 1.25" filter thread to increase the magnification of that particular eyepiece while still maintaining a low profile. When screwed into an eyepiece, the barlow will yield approximately 1.5x of magnification. So, for example, a 30mm eyepiece can be used with the barlow element screwed on as a 20mm eyepiece, or with the complete barlow as a 15mm eyepiece. That's like having three eyepieces in one! You can also use the tube by itself without the barlow element as a 36mm (1.4") extension tube for 1.25" eyepieces and accessories.e: Achromatic
Coatings: Fully multicoated, Blackened lens edges
Weight: 3.3oz
Height (Total): 78mm
End Caps: 2
1.25" filter threads on bottom of barlow: No
Made in Taiwan