1. COSMOS Status David Sprayberry, Sean Points & Jay Elias
National Optical Astronomy Observatory
ACTR Oct. 2013

2. General Instrument Status
Problems with cameras addressed by oil-coupled design
Design completed and reviewed earlier this year
Fabrication completed in July
Initial assembly completed in August
Integration completed at NOAO (flex rig)
Concerns about scattered light in one collimator addressed by comparison – no significant differences found
Just reminders of what we are doing/have done.
ACTR Oct. 2013

3. First T&E run Oct 7-11 on Mayall
KOSMOS Status
First T&E run Oct 7-11 on Mayall
Generally successful
It could be used for science right now, but it is not user-friendly yet
Several remaining software tasks
Minor issues with telescope adaptor
Should address all of these by December run
Flexure seen in Z (focus) direction; similar effect not seen in OSMOS; not yet diagnosed – fixable in software but a hardware solution strongly preferred
Multislit requires further testing; we can make masks in Arizona but method for CTIO TBD
Subsequent T&E time – Dec bright time, Jan 2014 available
Just reminders of what we are doing/have done.
ACTR Oct. 2013

4. KOSMOS Status
System efficiency curves – atmosphere and telescope not removed
Slit centered configuration
Just reminders of what we are doing/have done.
ACTR Oct. 2013

5. KOSMOS Status NGC 6946 – Hα image
Also used to demonstrate NB acquisition
Just reminders of what we are doing/have done.
ACTR Oct. 2013

6. COSMOS Status Pending items
Camera initially revealed significant coma; revisited detailed assembly procedures and coma reduced by factor of 10 – now better than KOSMOS camera (but we won’t re-do KOSMOS)
CCD dewars being assembled; detectors in hand – expect completion of detector/dewar/controller integration by late Dec/early Jan
Verify system functionality in flex rig prior to shipment
Also:
Mask fabrication for CTIO TBD; manufacture in Arizona may be most cost-effective option (but not quickest)
TCS interfaces need to be checked to the extent that they are new, include telescope offsets, rotator encoder, ADC….
Just reminders of what we are doing/have done.
ACTR Oct. 2013

7. CTIO deltas – what’s different (for reference):
COSMOS Status
CTIO deltas – what’s different (for reference):
CTIO has ADC and comparison lamps that illuminate full 10’ field; this is a good thing but we need to make sure we can interact correctly
Rotator status unclear at this point – need 0.03 degree precision in readout to enable MOS mode; auto control nice to have but hardly essential. Note: instrument rotation moment is small.
Cass cage is different; verify instrument weight (lack thereof) can be dealt with; review installation procedures and instrument labels
Compatibility of current mask software and NOAO-S laser cutter unclear; US commercial vendor may be significantly cheaper
Just reminders of what we are doing/have done.
ACTR Oct. 2013

8. COSMOS Schedule
Ship to Chile once final functional check complete; coordinate with OSU (Jan?)
Re-assembly and checkout at Blanco: Derwent (OSU), Daly (NOAO-N), Points +/- Elias, Detector Engineer (1 of Moore/George/Zelaya)
Local staff should be available for (a) consultation on interfaces and (b) training
First T&E run TBD, probably late Feb/early March
Points/Martini + TBD
Desirable to have this run before proposal deadline although extrapolated from KOSMOS should be safe
Standard Telops support + training (simple installation)
Second T&E run desirable since it’s likely something will arise that can’t be solved on the fly
Just reminders of what we are doing/have done.
ACTR Oct. 2013