Widest field astro instrument ...
Widest field astro instrument ...
is a pair of human eye. It has roughly 100 degree field of view (from The Sky6: Serious Astronomer edition manual). I wish it has more aperture
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Canopus Lim
- Posts: 1144
- Joined: Fri Jun 03, 2005 12:46 pm
- Location: Macpherson
Yup...the attributes of the eye that no other optical instruments can match:
1. ultra ultra widefield. Not only that.. a normal wideangle lens requires more than 7 elements to do that while this is done with only one lens in the eye.
2. Binocular vision
3. Focusing that does not change require movement of lens! Imagine your eyes are like those in telescopes... popping out!
4. Auto aperture control (adjust to different brightness condition)
5. Auto lens shade
6. Auto focus
7. Tears to clean the eyes
8. ONE lens to solve chromatic aberration to high order! The eye is a GRIN (Gradient Refractive Index) lens that means one lens has variation of refractive index... which refractor can solve CA in one lens?
Which lens can do that?
1. ultra ultra widefield. Not only that.. a normal wideangle lens requires more than 7 elements to do that while this is done with only one lens in the eye.
2. Binocular vision
3. Focusing that does not change require movement of lens! Imagine your eyes are like those in telescopes... popping out!
4. Auto aperture control (adjust to different brightness condition)
5. Auto lens shade
6. Auto focus
7. Tears to clean the eyes
8. ONE lens to solve chromatic aberration to high order! The eye is a GRIN (Gradient Refractive Index) lens that means one lens has variation of refractive index... which refractor can solve CA in one lens?
Which lens can do that?
AstroDuck