ASI662MC CS Lens Field of View

tjhcom

Does anyone know the actual field of view of the included lens? I can tell it's not a fisheye. Is it 120degrees? Thanks.

Tech@ZWO

tjhcom It's a 1/3″ 2.1mm 150-degree lens
https://www.zwoastro.com/product/new-cs-lens-2-8mm-12mm-f1-4/

tjhcom

I don't have the camera with me right now so can't confirm. Are you saying this is the lens that comes on a stock ASI662mc? Just confirming as I can see the view and it does not appear to be that wide (just going by what I see). Thanks!

johnpd

I am not sure how to exactly measure it, but one of the images I took during the Perseids a few weeks ago with my ASI662 and the wide field lens it came with seems to be close to 135° comparing it to a Stellarium view of the sky at that point and using its angle measurement tool..

JohnD

Pilotltd

Lens with my newly purchased ASI662MC looks nothing like the link posted by Tech@ZWO - it just says CCTV lens 2.1mm 3MP on it around the base, No writing around the lens itself. Identical to this cheap generic thing costing around £9 eBay item number:156344584255 and says this for Field Of View (F.O.V) (D/H/V): 1/2.7in 162.5°x142.4°x80° - I expected something better 🙁

johnpd

The link he posted actually has three lenses on it. The one that came with the ASI662 (2.1 3MP) is the top one on the list, not the top picture.

JohnD