So what?
If we get perfect sky-subtraction…
- Irrespective of slit shape...
- Irrespective of sky temporal variations...
- Irrespective of flexure/fringeing/sampling/flat-fielding...
No need for “longslit” on objects
- Multislit 8-15 arcsec long slits
“Microslits”
- 1-2 arcsec apertures (square/circular) on each object
- Cram many more in to the same field of view
- ~10x as many!
- If enough targets in FOV
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