13mm dia achromat doublet lens with 20mm focal length for telescope eyepiece

मुझे बहुत ही पसंद आया यह लेंस क्लियर शार्प क्वालिटी है इसकी मुझे इस लेंस के द्वारा कम से कम ₹10000 की बचत हुई

It's title not match with productsIt's actuall focal length is around 35 mmAnd daimeater is 12mm quality is okay not so good or not bad see the test on the images

Good quality product, dimensions exactly as specified, the edges are purposefully kept rough to give a tight bond when you fix it permanently, I used this lens as an erecting lens in terrestrial telescope. Very satisfied

I made a plossl eyepiece with 2 lenses.i am posting picture.but its not yet completed after final alignment I will paint it with black matt paint.

I made a telescope with this lens as eye piece. Its too good!

I don't have much words to say thanks. The lens is very nice and clear.And I have bought again to make better view for my telescope project. It is third parcel from Anand traders. They sell best quality products. Thanks again.