[Isocops] Fwd: High resolution (oxygen mode) test during lunar viewing

Nathan Schwadron nschwadron at me.com
Wed Jun 9 22:54:05 EDT 2010


> 
> 
> Hi Chelle and All
> 
> Here is the rough sequence of operations. 
> 
> Sun-Pointing Maneuver:  			6/26/10 	20:50:36 at about 14 Re
> Transition to HVSCI:    				6/26/10 	21:43:27 at 15 Re (angle from zaxis to Sun, 0.036 deg)
> Start Oxygen Mode Test (Table 4):      7/1/10   	14:00 at 46 Re (angle from zaxis to Sun, 4.575 deg)
> End Oxygen Mode Test (Table 4):   	7/1/10	24:00 at 44 Re (angle from zaxis to Sun, 4.97 deg)
> Transition back to HVENG:		7/3/10     15:00 at 24 Re (angle from zaxis to Sun, 6.49 deg)
> 
> I do not see any show stoppers yet.  
> 
> Cheers
> 
> Nathan
> 
> On Jun 8, 2010, at 5:03 PM, Reno, Michelle wrote:
> 
>> All,
>>  
>> Please note that we do not have our usual pointing during orbit 83 due to a star tracker outage at perigee. Rather than pointing at the sun at 06/27/10 10:54:29 (3 days prior to apogee), we will be pointing at the sun at 06/26/10 20:50:36.
>>  
>> Does attitude effect the moon viewing times? If so, the times in Stephen's email should be re-evaluated.
>>  
>> Chelle
>>  
>> 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.
>>  
>>  
>>  
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> Chelle Reno
>> Austin Mission Consulting
>> 106 E. 6th St. Ste. 939
>> Austin, TX  78701
>> (512) 704-3394 (o)
>> (210) 478-7337 (c)
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> 
>> From: Nathan Schwadron [mailto:nschwadron at mac.com]
>> Sent: Tue 6/8/2010 3:46 PM
>> To: McComas, Dave
>> Cc: Reno, Michelle; Fuselier, Stephen A; Eberhard Moebius; Harald Kucharek; David Heirtzler; Petrinec, Steven M; Chelle Reno; Peter Wurz
>> Subject: Re: {Spam?} High resolution (oxygen mode) test during lunar viewing
>> 
>> Hi Dave
>> 
>> We have a less than a week to create the STF. Harald said that he and David will send the relevant commands and I can put together an STF. Whether we load it or not, I believe it will be a good exercise to create it. 
>> 
>> Nathan
>> 
>> On Jun 8, 2010, at 12:33 PM, McComas, Dave wrote:
>> 
>>> Chelle, Nathan, Do we have time to do this in Orbit 83 without adding risk?
>>>  
>>> Thanks,
>>> Dave
>>> David J. McComas, Ph.D. 
>>> Assistant Vice President 
>>> Space Science and Engineering Division 
>>> Southwest Research Institute
>>> 
>>>  
>>> From: Reno, Michelle 
>>> Sent: Tuesday, June 08, 2010 11:16 AM
>>> To: Nathan Schwadron; Fuselier, Stephen A
>>> Cc: Eberhard Moebius; Harald Kucharek; David Heirtzler; Petrinec, Steven M; Chelle Reno; Peter Wurz; McComas, Dave
>>> Subject: RE: {Spam?} High resolution (oxygen mode) test during lunar viewing
>>>  
>>> For this particular test, FlatSat testing has already been run as part of the PLFW 5.5 acceptance testing (all O-modes were tested). The only thing that would need verification is that the commands you put in the STF are the correct commands.
>>>  
>>> Chelle
>>>  
>>>  
>>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> Chelle Reno
>>> Austin Mission Consulting
>>> 106 E. 6th St. Ste. 939
>>> Austin, TX  78701
>>> (512) 704-3394 (o)
>>> (210) 478-7337 (c)
>>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>>  
>>> From: Nathan Schwadron [mailto:nschwadron at mac.com]
>>> Sent: Tue 6/8/2010 11:13 AM
>>> To: Fuselier, Stephen A
>>> Cc: Eberhard Moebius; Harald Kucharek; David Heirtzler; Petrinec, Steven M; Chelle Reno; Peter Wurz; McComas, Dave
>>> Subject: Re: {Spam?} High resolution (oxygen mode) test during lunar viewing
>>> 
>>> Hi Stephen
>>>  
>>> The orbit 83 STF is due early next week. We can put together an STF but I need to know the specific commands you need. However, I was under the impression from Harald that yopu want to do flatsat testing prior to launching into Oxygen mode?
>>>  
>>> 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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