Xiao's 2011May run - Revision history

192.153.157.220 at 13:39, 26 May 2011

2011-05-26T13:39:16Z

← Older revision		Revision as of 13:39, 26 May 2011
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	I also worked a little on FE gui. Now it plots different beams as subplots in one figure. Also the "get intensity" button now gives mirc channels intensity if there is only one stage gets checked, otherwise it is from photometric channels.		I also worked a little on FE gui. Now it plots different beams as subplots in one figure. Also the "get intensity" button now gives mirc channels intensity if there is only one stage gets checked, otherwise it is from photometric channels.

			May23rd-25th

			1. getting fibers better focused. Here are the images of beam 1-6 on fiberexplorer gui.
			beam1 (XYZ): 34760, 44490, 89731
			beam2 : 52332, 53707, 81760
			beam3: 70883, 72762, 79350
			beam4: 84397, 64593, 81720
			beam5: 46409, 100700, 85848
			beam6: 56296, 93589, 88443

			[[Media:beam12_fiber_focus1.png]]

			[[Media:beam12_fiber_focus2.png]]

			[[Media:beam34_fiber_focus1.png]]

			[[Media:beam34_fiber_focus2.png]]

			[[Media:beam56_fiber_focus1.png]]

			[[Media:beam56_fiber_focus2.png]]

			2. We find MIRC 6T fringes!! The target is del Cyg.

			[[Media:MIRC6T_fringes1.png]]

			[[Media:MIRC6T_fringes2.jpeg]]

192.153.157.220 at 22:44, 23 May 2011

2011-05-23T22:44:59Z

← Older revision		Revision as of 22:44, 23 May 2011
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	Optimized Photometric Channels. Now the peak intensity of each beam is at least four times of mirc channel.		Optimized Photometric Channels. Now the peak intensity of each beam is at least four times of mirc channel.

			[[Media:beam12_mirc_pc.png]]

			[[Media:beam1_mirc_pc.png]]

			[[Media:beam2_mirc_pc.png]]

			[[Media:beam34_mirc_pc.png]]

			[[Media:beam3_mirc_pc.png]]

			[[Media:beam4_mirc_pc.png]]

			[[Media:beam56_mirc_pc.png]]

			[[Media:beam5_mirc_pc.png]]

			[[Media:beam6_mirc_pc.png]]

			I also worked a little on FE gui. Now it plots different beams as subplots in one figure. Also the "get intensity" button now gives mirc channels intensity if there is only one stage gets checked, otherwise it is from photometric channels.

192.153.157.220 at 22:37, 23 May 2011

2011-05-23T22:37:18Z

← Older revision		Revision as of 22:37, 23 May 2011
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	I also test vignetting when using grism mode. The intensity reduces to half as prism mode and the light spread over more pixels (80% light in the central row compared to more than 90% in prism mode).		I also test vignetting when using grism mode. The intensity reduces to half as prism mode and the light spread over more pixels (80% light in the central row compared to more than 90% in prism mode).

			May 22nd

			Optimized Photometric Channels. Now the peak intensity of each beam is at least four times of mirc channel.

192.153.157.221 at 08:55, 22 May 2011

2011-05-22T08:55:59Z

← Older revision		Revision as of 08:55, 22 May 2011
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	One more thing: we always find two spots for each beam with internal light, and the bottom is the brighter one. The distance between these two spots are 20 micron or 5000 steps.		One more thing: we always find two spots for each beam with internal light, and the bottom is the brighter one. The distance between these two spots are 20 micron or 5000 steps.

			May21st

			We aligned photometric channels!!. We used beam34, the peak intensity of each beam is at least twice of the mirc channel. But they haven't been optimized, I will try tomorrow.
			The input angle of mirc beam into photometric channels is very sensitive, including tiptilt and beam splitter rotation.

			[[Media:photometric_channels1.png]]

			[[Media:photometric_channels2.png]]

			I also test vignetting when using grism mode. The intensity reduces to half as prism mode and the light spread over more pixels (80% light in the central row compared to more than 90% in prism mode).

Monnierast at 08:53, 21 May 2011

2011-05-21T08:53:02Z

← Older revision		Revision as of 08:53, 21 May 2011
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	[[Media:beam16_nopol_cyl.png]]		[[Media:beam16_nopol_cyl.png]]

	[[Media:~~beam_pol_cyl~~.png]]		[[Media:beam16_pol_cyl.png]]

	[[Media:beam16_prism_cyl.png]]		[[Media:beam16_prism_cyl.png]]

192.153.157.221 at 08:50, 21 May 2011

2011-05-21T08:50:07Z

← Older revision		Revision as of 08:50, 21 May 2011
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	Bad day! I aligned MIRC so that doublet has enough room to move the light in all modes to lower left quadrant, and the beams are much better focused than yesterday. B3 has 95% light in one row, and beam4 has 92% in one row. But I messed the doublet sweat spot by pushing it too far.		Bad day! I aligned MIRC so that doublet has enough room to move the light in all modes to lower left quadrant, and the beams are much better focused than yesterday. B3 has 95% light in one row, and beam4 has 92% in one row. But I messed the doublet sweat spot by pushing it too far.
	So I have to realign it tomorrow. So basically nothing is done today...		So I have to realign it tomorrow. So basically nothing is done today...

			May20th

			Realigned MIRC so that the doublet is at position where it used to be. Now if we use R~450 H band grism mode, we can bring most of rows down to the lower left quadrant, but still missing 5 rows (the total number of rows is about 70 rows.). But we have to move the doublet to the limit. Another thing that we haven't checked is the light might miss the doublet when it is moved to the limit. So the intensity will probably be low when using grism mode. Also I aligned the cylindrical lens so that more than 90% of light are focused in one row for both beam 3 and 4. One problem is that the image of slit on detector is not good, less than 50% light are focus into one row.

			I also did the polarization test on fringes of beam 34, beam 45. It doesn't improve much on beam34, but improves greatly on beam45.

			[[Media:beam34_nopol.png]]

			[[Media:beam34_pol.png]]

			[[Media:beam45_nopol_cyl.png]]

			[[Media:beam45_pol_cyl.png]]

			We also find fringes on beam16, first at CHARA!! but the fringes is mediam.
			beam1 ealing mount: 90350
			beam6 ealing mount: 60300
			delay: beam6(W2) - beam1(W1) = 0.221405m

			[[Media:beam16_nopol_cyl.png]]

			[[Media:beam_pol_cyl.png]]

			[[Media:beam16_prism_cyl.png]]

			We will probably put fiber squeezer on beam 456 so that the fringes are strong on all pairs. We have another idea of how to mount squeezer so we probably won't do this during this run.

			One more thing: we always find two spots for each beam with internal light, and the bottom is the brighter one. The distance between these two spots are 20 micron or 5000 steps.

192.153.157.221 at 08:19, 20 May 2011

2011-05-20T08:19:02Z

← Older revision		Revision as of 08:19, 20 May 2011
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	[[Media:beam56.png]]		[[Media:beam56.png]]

			May19th

			Bad day! I aligned MIRC so that doublet has enough room to move the light in all modes to lower left quadrant, and the beams are much better focused than yesterday. B3 has 95% light in one row, and beam4 has 92% in one row. But I messed the doublet sweat spot by pushing it too far.
			So I have to realign it tomorrow. So basically nothing is done today...

Monnierast at 08:19, 19 May 2011

2011-05-19T08:19:27Z

← Older revision		Revision as of 08:19, 19 May 2011
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	May 18th		May 18th

			We mount the cylindrical lens and beam3 and 4 look great. Here are the peak intensity of each row when it is focused.

			beam3:
			row4: 3
			row5: 45
			row6:3

			beam4:
			row4:2.5
			row5: 25
			row6:2.5

			[[Media:beam3_cyl_lens.png]]

			[[Media:beam4_cyl_lens.png]]


	We find MIRC fringes on 4 more pairs of beams: b4b5, b5b6, b1b2, b2b3.		We find MIRC fringes on 4 more pairs of beams: b4b5, b5b6, b1b2, b2b3.

192.153.157.221 at 08:15, 19 May 2011

2011-05-19T08:15:32Z

← Older revision		Revision as of 08:15, 19 May 2011
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	[[Media:beam12.png]		[[Media:beam12.png]]

	[[Media:beam23.png]		[[Media:beam23.png]]

	[[Media:beam56.png]		[[Media:beam56.png]]

192.153.157.221 at 08:15, 19 May 2011

2011-05-19T08:15:03Z

← Older revision		Revision as of 08:15, 19 May 2011
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	[[Media:frignes_cross_section3.png]]		[[Media:frignes_cross_section3.png]]

			May 18th

			We find MIRC fringes on 4 more pairs of beams: b4b5, b5b6, b1b2, b2b3.

			Here are the ealing position and retro position:

			b4b5:
			b4: 96915; b5: 30500; retro: 5.4mm

			b5b6:
			b5: 30500; b6: 65300; retro: 10.38mm

			b1b2:
			b1: 90350; b2: 78825; retro: 2.9mm

			b2b3:
			b2: 90325; b3: 53700; retro: 6.8mm

			the fringe quality are

			b3b4: ~50%
			b4b5: ~25%
			b5b6, b1b2, b2b3 are all above 90%.

			note: two problems. 1. the intensity of b5 is about half of the rest, don't know why. 2. using 450 grism mode, we couldnt bring the beam down to the lower left quadrant because
			the actuator of the doublet hits the limit. needs to move the whole mirc stage and realign tomorrow.


			[[Media:beam12.png]

			[[Media:beam23.png]

			[[Media:beam56.png]