Learn how eyepiece field of view affects what you can see, even when focal length remains the same. Dr. D of www.telescopes.net gives you a quick run down on apparent field of view and true field of view to help you better select your eyepieces.
Explore Scientific 100 degree eyepieces can be found at https://telescopes.net/store/manufacturer/explore-scientific?cat=838&eyepiece_field_of_view_f=1937
Price: $92.95
Celestron - Zoom Eyepiece for Telescope - Versatile 8mm-24mm Zoom for Low Power and High Power Viewing - Works with Any Telescope that Accepts 1.25" Eyepieces
Zoom from low to high power in an instant with this versatile eyepiece Compatible with any telescope that accepts 1.25” eyepieces This fully multi-coated Premium eyepiece zooms to any focal length between 8 mm and 24 mm - pick the best magnification ... (as of October 16, 2020 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Price:
Celestron – 1.25” Eyepiece and Filter Accessory Kit – 14 Piece Telescope Accessory Set – Plossl Telescope Eyepiece – Barlow Lens – Colored Filters – Moon Filter – Sturdy Metal Carry Case
5 SUPERIOR-GRADE PLOSSL EYEPIECES: Our Celestron Accessory Kit includes five Plossl telescope eyepieces, ranging from low to high power: 32mm, 17mm, 13mm, 8mm, and 6mm. Each eyepiece features a four-element design with a 52-degree field of view. 2X B... (as of October 16, 2020 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Price: $99.95
Meade Instruments 07741 Series 5000 1.25-Inch Ultra Wide Angle 8.8-mm Eyepiece (Black)
(193)
Price: $29.99
MEOPTEX 1.25" 6mm 9mm 15mm 20mm 66-Degree Ultra Wide Angle Eyepiece for Telescope (15mm)
(35)
what is the true field of view for the 20mm 100 degree?
thanks