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To-do List for after the November 2007 run

1. Guide Camera. (a) Current scale on guide camera display makes it difficult to see the smallest slits.
Some of this might be due to the fact we could only run via VNC from maestroccd.
Gary's software only centroids to 1/2 pixel -- will this be adequate for guiding? Probably not.
Solutions:
(1) Fix zoom scale on guide camera display software to enable easier acquisition of objects. This is not as trivial as it seems.
(2) Get new optic so that we have a better plate scale.
(3) Tip slit plates to enable better focus and guiding.
(4) Finish making slit mounts. Measure order overlap for all slit combination.
(5) Annodize new camera mount.

Michelle has identified a couple of options, is waiting for zemax files from vendors to verify.
Zemax file is proprietary, but she's arranged with vendor to make calculation. Cost: $750
Takes a standard c-mount, may require modifications to current hardware.

3. Isolate shutter to eliminate fixed pattern noise.

Jeff Rill built a box. We need to install and test.

4. Flexure.
Findings:
Grating turnbuckle doesn't decrease flexure, as predicted by JT, so we can get rid of these
Flexure is marginally better at rot=170 deg than 0 deg.
Flexure in cross-disperser direction is significantly worse than in July, at both rotation angles.

Flexure is much better behaved than what we saw in July, so grating mount is probably more stable

and predictable.

(Checked that this is not due to f/5 / internal lamp difference).

Need to see if there is something easy to do to improve flexure in xdisp direction.

Shawn and John have volunteered to work on this.

4. Focus issues: focus is great with f/5 comps but lousy with cal box light.
Solution: Focus of cal box light.

Michelle has also identified another place to put the cal box, which will

allow changes of lamps while the spectrograph is on the telescope,

will eliminate one turn mirror

will remove collisions with the dewar which are probably knocking the cal box alignment off.

Test other hallow cathode lamps and install one for April run.

5. Comp Lamp flip mirror. Current mechanism is unreliable. Warren's fix was basically to replace one or
two parts, and was not done in time for the run. New motor has been ordered
which will eliminate circular motion mechanism. Need to make bracket, install
and test.

John D. has volunteered to work on this, Michelle has prepared a document with specifications.

6. Grating Motor. Motor is installed and bolted down. Need to set limits and test software.

Corey and Brian (of MMTO) will help.

7. Test PZTs. Test flexure with PZTs, devise method to tilt grating by specified amount, document proceedure.

MMTO student Chang will work on this with supervision of Creighton.

8. Writeups & analysis:

- new method for lowering spectrograph to cart
- description of grating mount and adjustments
- flexure report
- focus script & plots
- flexure script
- Identify Th-Ar
- flat fields: internal quartz, UV
- how to run the guider
- how to turn on/off stuff on Lewis

9. Box for grating cover stuff

10. Boxes for mounting hardware

11. Covers:

- Grating end
- Dewar end top
- move oil spigot?.sign for oil spigot
- Dewar end
- Annodize
- cover for spectrograph entry during storage

12. Organize slits and think about new ones

13. Vacuum hoses (Done).

14. Tent in pit. John has been tasked to do this. Will wait until Dec. 15 when AO instruments leave pit.

15. Provisional ETC. Morag and Dalin of MMTO will help.

16. Galil is unreliable; what is cause? Tom Trebisky may be able to help.

17. New user control gui (server/client). Skip Schaller.

18. annodize parts: flexure for flip mirror, covers, guide camera bracket, flip mirror bracket

19. Work on pipeline. Christy Tremonti has started, and we've discussed a strategy for quick look software at the telescope.

Betty Stobie and Roger Thompson need to be brought in to the loop.

20. Misc. Electronics.

Spectrograph electronics power cable doesn't lock properly.

CCD cables: need replacement optical cables, figure out why cable drape didn't work.