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operations:26mpointing
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operations:26mpointing [2018/03/20 02:54] Jim Lovell [Observing log] |
operations:26mpointing [2018/06/25 01:06] (current) Jim Lovell [Observing log] |
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| 79/01:40 UT: More pointing. Wind close to limbs, partly cloudy. | 79/01:40 UT: More pointing. Wind close to limbs, partly cloudy. | ||
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| + | ---- | ||
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| + | 2018/106 (16 Apr) 04:20 UT: Started pointing with new model loaded following Y-encoder replacement. X solutions should be OK but Y may not be. There is a -0.07 deg DC offset plus the solutions acquired with the old Y encoder. These observations are for testing/verification of the new model but a subsequent update is required probably. Weather is windy at start, partly cloudy. | ||
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| + | ---- | ||
| + | 2018/107 (17 Apr) 01:40 UT: Re-started with pointing model after previous one discovered to have offsets applied with the wrong sign (oops). Good weather. | ||
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| + | ---- | ||
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| + | ---- | ||
| + | 2018/129 (9 May): The previous pointing model was made with the wrong sys26m configuration file. It was set so that the correction file for the old encoder (SN 6007) was in use rather than the new one. The current Y1 encoder has an unknown serial number but by process of elimination is probably 6106. The host.cfg file on sys26m has now been changed accordingly. The current pointing model in XY_GRID.BIN is the model used for the old Y1 encoder (6007) but with a -0.07 deg offset determined by Jamie (newsmerd:~observer/floppyimage/XY_GRID_20180412.BIN). Pointing will be done with this setup, currently on sys26m, but awaiting good weather. High winds and rain forecast for the next few days... | ||
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| + | * A summary of the [[http://ra-wiki.phys.utas.edu.au/index.php?n=MtPleasant26m.Encoders|current encoder status]] is on the RA wiki | ||
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| + | 2018/129 (9 May): The above assumption appears to be incorrect. The pointing offsets I’m getting in Y are varying on the same source | ||
| + | with every scan, indicating a big oscillation. We are back to using a model that | ||
| + | includes corrections for the oscillation in the gridded model and the wrong encoder model. The sys26m boot floppy is labeled: | ||
| + | <WRAP center round box 60%> | ||
| + | sys26m 1/5/18\\ | ||
| + | Y model oscillation\\ | ||
| + | Jim Lovell\\ | ||
| + | Y oscillation in grid model\\ | ||
| + | sys26m.01May2018.img | ||
| + | </WRAP> | ||
| + | |||
| + | 2018/145-148 : Low winds, clear skies, so running some gain/pointing observations with the gridded oscillation model above | ||
| + | |||
| + | 2018/148 (28 May). I've constructed a model for the current "mystery" encoder on Y1 that has the previously used wrong model subtracted and the new oscillation added. The encoder file is called mystenc01.bin. This is being used together with XY_GRID_20180412.BIN as the gridded model (see above for a description). | ||
| + | The sys26m boot floppy is labeled: | ||
| + | <WRAP center round box 60%> | ||
| + | sys26m 28/5/18\\ | ||
| + | Y1 encoder model for\\ | ||
| + | mystery encoder\\ | ||
| + | Old pointing model + DC offset\\ | ||
| + | sys26m.20180528.img | ||
| + | </WRAP> | ||
| + | |||
| + | 2018/148/0220 : Pointing run started | ||
| + | |||
| + | 2018/148/0400 : Results on TauA show big oscillation. Reverting to sys26m.01May2018.img which includes oscillation in gridded model, while I try to work out what's going on. | ||
| + | |||
| + | 2018/149 (29 May): Analysis shows wrong signs in encoder model file. New floppy ready to go: | ||
| + | <WRAP center round box 60%> | ||
| + | sys26m 29/5/18\\ | ||
| + | Y1 encoder model for\\ | ||
| + | mystery encoder\\ | ||
| + | Old pointing model + DC offset\\ | ||
| + | sys26m.20180529.img | ||
| + | </WRAP> | ||
| + | |||
| + | 2018/149/2300 : Pointing observations with new config started - Jim Lovell | ||
| + | |||
| + | 2018/151/2249 : Another new encoder model being trialed. sys26m.20180530.img - Disk label: | ||
| + | <WRAP center round box 60%> | ||
| + | sys26m 30/5/18\\ | ||
| + | Y1 encoder model for\\ | ||
| + | mystery encoder\\ | ||
| + | Old pointing model + DC offset\\ | ||
| + | sys26m.20180530.img | ||
| + | </WRAP> | ||
| + | |||
| + | 2018/151 - 2018/154 : pointing observations with the new configuration resulting in a new gridded model XY_GRID_20180604.BIN. Now loaded in sys26m from disk image newsmerd:~observer/floppyimage/sys26m.20180604.img. Disk label: | ||
| + | <WRAP center round box 60%> | ||
| + | sys26m.20180604,img\\ | ||
| + | New Y1 enc model: 00000003.bin\\ | ||
| + | New gridded pointing model: 20180604\\ | ||
| + | Jim Lovell\\ | ||
| + | 4/6/18 | ||
| + | </WRAP> | ||
| + | |||
| + | 2018/175.23:20 : Pointing verification tests started | ||
/home/www/auscope/opswiki/data/attic/operations/26mpointing.1521514496.txt.gz · Last modified: 2018/03/20 02:54 by Jim Lovell
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