Xiao's 2011July run - Revision history

192.153.157.220 at 23:00, 22 July 2011

2011-07-22T23:00:08Z

2011-07-22T22:59:35Z

← Older revision		Revision as of 22:59, 22 July 2011
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	[[Media:PC_beam4_2011July.png]]		[[Media:PC_beam4_2011July.png]]


			July 22nd

			fiber positions (on gui):

			beam1 : x = 28693, y = 45063, z= 89730

			beam2: x = 32014, y = 56119, z = 81460

			beam3: x = 74184, y = 74220, z = 80110

			beam4: x = 89461, y = 63960, z = 82750

			beam5: x = 39056, y = 96994, z = 86290

			beam6: x = 48451, y = 90922, z = 88793


			photometric channels position:

			beam1: 196
			beam2: 209
			beam3: 215
			beam4: 160
			beam5: 184
			beam6: 172


			pickoff mirror position:

			beam1: 60000
			beam2: 64550
			beam3: 72450
			beam4: 68800
			beam5: 67750
			beam6: 87750

2011-07-11T07:07:45Z

← Older revision		Revision as of 07:07, 11 July 2011
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	[[Media:beam16a_fringes_2011July.png]]		[[Media:beam16a_fringes_2011July.png]]

			July 9th

			adjust photometric channels again to get high throughput. HEre are images of beam 3 and 4.

			[[Media:PC_beam3_2011July.png]]

			[[Media:PC_beam4_2011July.png]]

2011-07-11T06:13:13Z

← Older revision		Revision as of 06:13, 11 July 2011
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	[[Media:beam56_flux_comp_2011July.png]]		[[Media:beam56_flux_comp_2011July.png]]


			July 8th

			We squeezed fibers of beam 4,5,6 today. Here are how the fringes look like after squeezing, including beam12 and beam23 which look like before.

			[[Media:beam12_fringes_2011July.png]]

			[[Media:beam12a_fringes_2011July.png]]

			[[Media:beam23_fringes_2011July.png]]

			[[Media:beam23a_fringes_2011July.png]]

			[[Media:beam34_fringes_2011July.png]]

			[[Media:beam34a_fringes_2011July.png]]

			[[Media:beam45_fringes_2011July.png]]

			[[Media:beam45a_fringes_2011July.png]]

			[[Media:beam56_fringes_2011July.png]]

			[[Media:beam56a_fringes_2011July.png]]

			[[Media:beam16_fringes_2011July.png]]

			[[Media:beam16a_fringes_2011July.png]]

2011-07-11T06:07:15Z

← Older revision		Revision as of 06:07, 11 July 2011
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	July 7th		July 7th

	I focused the fibers better and measure the flux in each neighboring pairs. The fluxes of beam 1, 2, 6 are about the same, beam 3 is about 90%, beam 4 is about 50%, beam 5 is about 80%.		I focused the fibers better and measure the flux in each neighboring pairs. The fluxes of beam 1, 2, 6 are about the same, beam 3 is about 90%, beam 4 is about 50%, beam 5 is about 80%.

			Notice: we realized that beam1,2,3 had pavo splitters in, which reduced about 30% of light. When measuring beam 12 and beam23, the splitters are in. When measuring the rest, splitters are out.

	[[Media:beam12_flux_comp_2011July.png]]		[[Media:beam12_flux_comp_2011July.png]]

2011-07-11T05:05:55Z

← Older revision		Revision as of 05:05, 11 July 2011
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	[[Media:beam34b_2011July.png]]		[[Media:beam34b_2011July.png]]

			July 7th

			I focused the fibers better and measure the flux in each neighboring pairs. The fluxes of beam 1, 2, 6 are about the same, beam 3 is about 90%, beam 4 is about 50%, beam 5 is about 80%.

			[[Media:beam12_flux_comp_2011July.png]]

			[[Media:beam23_flux_comp_2011July.png]]

			[[Media:beam34_flux_comp_2011July.png]]

			[[Media:beam45_flux_comp_2011July.png]]

			[[Media:beam56_flux_comp_2011July.png]]

2011-07-07T08:23:58Z

2011-07-07T08:23:36Z

2011-07-07T08:13:12Z

@@ Line 31: / Line 31: @@
 The the best focus positions of MIRC fibers have drifted about 50 microns in xy direction.
 The photometric channels have also drifted, mostly on the beamsplitter side. I have to rotate the beamsplitter to get most of light back, but the PC flux is still lower than before, about half. I need to do a better alignment if I have time in the future.
-I also found fringes on beam56, beam45, beam34.
+I also found fringes on beam56, beam45, beam34. We somehow solved the dispersion problem of fringes in beam56, we really don't know why. And also the flux between different beams are all over the place. I need to do a better focus and measurement tomorrow.
 The retro positions are different from before.
 beam56: retro = 10.43mm
@@ Line 38: / Line 39: @@
 Here are the images.

2011-07-07T08:05:45Z

@@ Line 1: / Line 1: @@
-July4th
+July4th & 5th
 testing saving data. note: the dewar was pumping down, and hadn't been cooled down yet.
@@ Line 26: / Line 26: @@
 Although these two modes both have frame counter error, but they are essentially different. In grism mode, when the error happens, it prints out the message length which is a very large number. But in prism mode, there is no such printouts.