More aperture for astrophotography and vistual: provide good image with high contrast; ED glass means visible colour aberrations are reduced to minimum with sharp image; all lens surfaces have been provided with multi coated to reduce reflections;
For astrophotography; sometimes more focal length is required in order for them to be seen at a reasonable size in the image especially for compact objects; there is also no shadowing apparent on small image format camera chips for big plus;
Larger diameter has more scope for lenses: 2 inch diameter allows to insert 2 inch eyepieces into this barlow with double magnification; the large lens diameter also means you will notice no shadowing in the image;
Perfectly neutral color will not alter the natural color of the Moon
Especially useful for large aperture telescopes through which the light of the Moon can be extremely overwhelming
Astromania Filter Set of 1.25-Inch Seven Telescope Filters - Bundle with - 1.25" Plossl Eyepieces 4 10 25mm with 2X Barlow
KWD 29
Astromania Finderscope Starpointer - Bundle with - Universal Dovetail Base&Red Dot Finderscope
KWD 25
Astromania 2" Moon/Skyglow Filter - Bundle with - 2" ED 2X Dual Power Telescope Barlow Lens
KWD 30
Astromania 2" T-2 Focal Camera Adapter for SLR Cameras - Bundle with - T/T2 Lens Mount Adapter Ring for Sony-NEX
KWD 13
