[Isocops] {Spam?} High resolution (oxygen mode) test during lunar viewing

[Nathan Schwadron]

Hi Stephen

Is there risk associated with going into HVSCI at 10 Rs? Is that an acceptable for the Hi team as well?

Nathan

On Jun 10, 2010, at 12:22 PM, Fuselier, Stephen A wrote:

> Regarding the switch between table 3 and another table. Although that is what we are going to do in the real spring mode, for the moon test, I think we want to remain in table 3 during spin bins 38-50 for the entire time. We do not have the best statistics, so the added ~10% at one energy step is valuable.
>  
> I believe that we want to do the background test in orbit 84. It’s our last chance in the magnetosheath that would be run for 1 day (I sent out the details).
>  
> Stephen
>  
> From: Nathan Schwadron [mailto:nschwadron at mac.com] 
> Sent: Wednesday, June 09, 2010 8:37 PM
> To: Fuselier, Stephen A
> Cc: Eberhard Moebius; Harald Kucharek; David Heirtzler; Petrinec, Steven M; Chelle Reno; Peter Wurz; Dave McComas; Mark Tapley; Ken Fairchild; isoc cops
> Subject: Re: {Spam?} High resolution (oxygen mode) test during lunar viewing
>  
> Hi Stephen
>  
> Here are the commands to enter into the oxygen mode and to exit from it again. I have used your original times (7/1 13:00 - 7/2 01:30), which were a bit more conservative. 
>  
> All this STF does is to load table 3 for the lo science plan. Remember that we have the option to switch between two tables over some cadence. So if you also wanted some viewing using the normal table you could do that as well. As it stands, this loads table three and, over the time indicated, all you will get from Lo over bins 38-50 is determined by table 3 
>  
> 2010-07-01T13:00:00.000Z||CEU_MODE            HVENG
> 2010-07-01T13:01:00.000Z||CEU_LO_SCIENCE_MODE OXYGEN
> 2010-07-01T13:02:00.000Z||CEU_LO_SCI_PLAN     3,1,3,1
> 2010-07-01T13:04:00.000Z||CEU_MODE            HVSCI
> 2010-07-02T01:27:00.000Z||CEU_MODE            HVENG
> 2010-07-02T01:28:00.000Z||CEU_LO_SCIENCE_MODE NORMAL
> 2010-07-02T01:30:00.000Z||CEU_MODE            HVSCI
>  
> If you all agree that this is what you want, then Mark can incorporate these commands into the orbit 83 STF. However, I need to know very soon (aka tomorrow) if this is indeed what you want to do. 
>  
> Chelle also needs to prepare a CAR to set start/stop bins to 38/50. Chelle, you are on that right?
>  
> In terms of other tests, this exercise has given me the confidence and familiarity with the STF tools to put together other STFs as they are needed. Please let us know well in advance (three orbits or more) when you would like to run other tests (like the background test). 
>  
> Cheers
>  
> Nathan
>  
> On Jun 8, 2010, at 11:57 AM, Fuselier, Stephen A wrote:
> 
> 
> During orbit 83 (see attached orbit plot), the moon will be in the field of view under the following conditions:
> Start date, time                   stop date, time                            distance in Re to the moon
> 2010/07/01 14:32 - 2010/07/01 23:47        18.9 - 20.9
>  
> Except for the fact that we’re in the magnetosheath, this is the last, best time to view the moon “up close and personal” for an extended period of time in the 90 degree NEP angle direction.
>  
> I propose that we go into spring oxygen mode (using the standard spring oxygen LUT) for the time period from 1400 to 2400 on 1 July. We should use the standard +/-30 degree window for the mode and center this on the 90 degree NEP angle, all standard procedures for the oxygen mode in the spring.
>  
> If we do this, we will get a good test of the oxygen mode for this coming spring campaign and we will get some valuable data on the angular resolution of the high resolution sector. I figure there would be 10’s of counts accumulated over the interval (depending on the solar wind at the time, of course). Since we’re in the magnetosheath, our heliospheric data is nearly useless anyway, so this would be a great test in preparation for the upcoming spring oxygen season.
>  
> If we all agree, then we need to take this to IBEX-Hi and see if they agree to go out of science mode briefly twice during the orbit to set this up.
>  
> Also, I want to know if we’re too late trying to set this up for orbit 83? Chelle, Nathan??
>  
> Stephen
>  
> Dr. Stephen A. Fuselier, PhD, Senior Manager
> Space Physics Department
> Lockheed Martin Advanced Technology Center
> Dept.  ADCS, Bldg. 255
> 3251 Hanover St
> Palo Alto, CA  94304
> (Office) 650-424-3334
> (Fax) 650-424-3333
>  
> <ibex_orbit_0083.gif>
>  

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