- #1
oz93666
- 174
- 29
I'm not talking about the well known, miss-grinding of the main mirror which was corrected long ago . This picture illustrates well , my beef with the current images ...
Every image of every star has four streaks of light , this is not so noticeable in pictures of galaxies where the stars are very close to point sources but the streaks are still there.
These streaks are cause by the four struts holding the secondary mirror.
There must be many ways to hold the secondary mirror, particularly in zero gravity , without making this mess of the picture , magnetic suspension ...or a network of thousands of supper fine wires/nano tubes like a spoked bicycle wheel... or fixing the mirror to a transparent sheet covering the whole field of view would only lose a few % of the light .
Is this the best the tax payer can expect? Incompetence at the design level !
Every image of every star has four streaks of light , this is not so noticeable in pictures of galaxies where the stars are very close to point sources but the streaks are still there.
These streaks are cause by the four struts holding the secondary mirror.
There must be many ways to hold the secondary mirror, particularly in zero gravity , without making this mess of the picture , magnetic suspension ...or a network of thousands of supper fine wires/nano tubes like a spoked bicycle wheel... or fixing the mirror to a transparent sheet covering the whole field of view would only lose a few % of the light .
Is this the best the tax payer can expect? Incompetence at the design level !