Subject: Re: [sloan-25mlog 2220] 2.5m obslog 20150409 (SJD 57122)
From: Kaike Pan
Date: Fri, 10 Apr 2015 15:02:07 -0600
Hi Audrey,=20
Thank you for clarification.=20
> On Apr 10, 2015, at 2:54 PM, Audrey Oravetz  =
wrote:
>=20
> Lsat night, we observed 2 X 900 sec MaNGA exposures at the 'C' =
position
> while we took 1 X ABBA set of exposures for APOGEE2 during the =
twilight
> hours while we were waiting for 15-degree twilight.
>=20
> At the start of 15-degree twilight, we started the regular sequence =
MaNGA
> sequence, but I forgot to hit the 'default' button. Therefore, we =
started
> taking a 'C' dither position exposure and not the regular 'N'.
>=20
> I recognized this mistake ~8 minutes into the exposure, so we lost =
only a
> few minutes. However, we ran a little further into APOGEE2 time during =
the
> transition (about 10 minutes), and then stayed 10 minutes later during =
the
> morning twilight hours for APOGEE2 to make up for all of this.
Agree. Let=E2=80=99s use =E2=80=9Cdo APOGEE MaNGA dither=E2=80=9D for =
twilight APOGEE data collection
on MaNGA-led plates. That way, we will start MaNGA dither sequence in a =
different
window. Hopefully, this will reduce confusion.=20
>=20
> In essence, no time was lost, and APOGEE2 got bonus 1XABBA exposures =
at
> the beginning of the night.
>=20
> Yes, it is VERY easy to mistake which project is leading. The =
observers
> really have to pay attention and click the 'default' button. I =
apologize
> for missing this.
>=20
> Audrey
>=20
>=20
>=20
>=20
>=20
>=20
>=20
>> Thank you John for catching this.
>> All observers, PLEASE put all time lose in the observing summer =
section.
>>=20
>>=20
>>> On Apr 10, 2015, at 9:12 AM, John K. Parejko
>>> wrote:
>>>=20
>>> I'm curious how this happened: For a MaNGA lead plate, SOP should =
have
>>> filled in the default dither sequence. Did that not happen, was it
>>> overridden, or what?
>>=20
>> This is why I request this to be fixed as soon as possible. After a
>> cartridge with co-observing plate is loaded into SOP, observers have =
to
>> click-on default to
>> get correct dither sequences for the plate. otherwise, SOP will have
>> dither sequence from the previous co-observing plate. i.e if the =
previous
>> is a APOGEE-led
>> co-observing plate, and a new MaNGA-led co-observing plate is loaded =
into
>> SOP, SOP will still have dither sequence for APOGEE-led plate, i.c.
>> =C3=A2=C2=80=C2=9CCC=C3=A2=C2=80=C2=9D. Observers have to click on =
default to get dither sequence of
>> =C3=A2=C2=80=C2=9CNSE=C3=A2=C2=80=C2=9D.  If the previous =
co-observing plate is a MaNGA-led, and a new
>> APOGEE-led is loaded into SOP, then
>> SOP has dither sequence set to =C3=A2=C2=80=C2=9CNSE=C3=A2=C2=80=C2=9D =
till =C3=A2=C2=80=C2=9Cdefault=C3=A2=C2=80=C2=9D is clicked
>> that will change to =C3=A2=C2=80=C2=9CCC=C3=A2=C2=80=C2=9D.  So =
PLEASE fix the relevant tickets on this.
>>=20
>>=20
>> A temporary fix - click on =C3=A2=C2=80=C2=9Cdefault=C3=A2=C2=80=C2=9D =
after a co-obsrving plate is
>> loaded, is posted in =C3=A2=C2=80=C2=9Cobserving tips=C3=A2=C2=80=C2=9D=
 page and SDSS Observing Plan
>> page,
>> but I knew this could hit us.
>>=20
>>>=20
>>> This does push me toward revising the APOGEE-led co-observing SOP =
window
>>> appearance, but that's going to require more work and thought.
>>>=20
>>> Also, for time tracking purposes, I'd say it was ~40 minutes lost, =
as
>>> the MaNGA C positions won't be useable for their main science =
(though
>>> I'd guess they could come up with some other use for them).
>>>=20
>>> John
>>>=20
>>> On 10Apr 2015, at 08:22, kgrabowski@apo.nmsu.edu wrote:
>>>=20
>>>> 02:04:59  apogee.expose=3DapRaw-15600011, 42, A, Object
>>>> 02:05:05  boss exposure  900.0, file=3D198009, C
>>>> 02:12:29  apogee.expose=3DapRaw-15600012, 42, B, Object
>>>> 02:21:56  apogee.expose=3DapRaw-15600013, 42, B, Object
>>>> 02:22:03  boss exposure  900.0, file=3D198010, C
>>>> 02:29:31  apogee.expose=3DapRaw-15600014, 42, A, Object
>>>> 02:39:10  apogee.expose=3DapRaw-15600015, 42, A, Object
>>>> 02:39:17  boss exposure  900.0, file=3D198011, C
>>>>=20
>>>> Aborted this exposure because we should have started an NSE set.
>>>> Lost ~10 minutes for incorrect dither position.
>>>=20
>>> --
>>> *************************
>>> John Parejko
>>> john.parejko@yale.edu
>>> http://www.astro.yale.edu/~jp727/
>>> 203 432-9759
>>> JWG 465
>>> Department of Physics
>>> Yale University
>>> New Haven, CT
>>> **************************
>>>=20
>>>=20
>>>=20
>>>=20
>>>=20
>>>=20
>>> ____________________________________________________________
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>>=20
>> ____________________________________________________________
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