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221. Astrophysical Research Consortium - Apache Point Observatory
. Contact Webmaster for web page errors, corrections, ommisions, and/or additions. This page last updated: June 28, 2006 - JMD . This page last checked: October 26, 2004 - JMD .
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/Grim/Grim_old_information.html -- 4.1 Кб -- 29.06.2006
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222. Astrophysical Research Consortium - Apache Point Observatory
. Contact Webmaster for web page errors, corrections, ommisions, and/or additions. This page last updated: June 28, 2006 - JMD . This page last checked: October 26, 2004 - JMD .
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/Grim/Grim_problems.html -- 4.1 Кб -- 29.06.2006
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223. Astrophysical Research Consortium - Apache Point Observatory
... CCD is a NICMOS 3 HgCdTe Focal Plane Array (FPS) 256x256 CCD . CCD pixel size = 40 m . CCD gain = 4.73 e - /ADU 0.2 (K.Gloria measured in 1994: 4.56 e - / ADU ( see plot here ) . CCD read noise = 110 e - / pixel 20 . ... Pixel scale = 0.48"/pixel @ f/5 (120 arcsec FOV), 0.24"/pixel @ f/10 (60 arcsec FOV), 0.11"/pixel @ f/20 (30 arcsec FOV) all binned 1x1 . ...
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/Grim/Grim_quick_info.html -- 6.4 Кб -- 29.06.2006
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224. Astrophysical Research Consortium - Apache Point Observatory
. Contact Webmaster for web page errors, corrections, ommisions, and/or additions. This page last updated: June 28, 2006 - JMD . This page last checked: October 26, 2004 - JMD . Current Status . History . Offsite Information . Reference .
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/Grim/Grim_status.html -- 4.4 Кб -- 29.06.2006
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225. Astrophysical Research Consortium - Apache Point Observatory
... A GRIM Spectroscopy Primer . ... SLIT WIDTH . ... It may take more than one iteration of the procedure for calculating the offset before you land your object(s) on the slit, but taking a short-duration exposure in "Spectral" mode once you think you're there will help confirm the pointing. ... The image header variables FILTER1, FILTER2, LENS, GRISM, SLIT give the current status of GRIM II's mechanical configuration. ... This document summarizes both types of GRIM keywords and provides usage examples...
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/Grim/Grim_usage.html -- 64.9 Кб -- 12.06.2008
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226. NICMOS3 Homepage
GRIM II's detector is a Rockwell 256x256 NICMOS3 HgCdTe array sensitive from 1-2.5 microns. ... 70% Gain(2) 4.73 +- .2 e- A.D.U.^-1 Read noise(2) 110 +- 20 e- Linear well depth (3) 130,000 e- Dark current < 1 e- sec.^ ... The electronic gain and read noise were measured using the photon transfer technique (Janesick, Klaasen, & Elliott 1987). The photon transfer technique uses the data's noise properties to measure the read noise and gain. ... Each "exposure" consists of two "reads". ...
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/Grim/OLD/grim/NICMOS3/NICMOS3.html -- 3.1 Кб -- 22.08.2003
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227. ar_lamps
Last updated 21 August 2003 by JMD . Last link checked 21 August 2003 by JMD . These line plots were made by placing an Ar discharge lamp and power supply about 8 inches away from GRIM's entrance window. ... For most purposes, we advise that observers request a setup similar to the one used here for getting Ar lamp wavecals. ... postscript . jpeg . ... The low resolution of GRIM yields broad lines that make it difficult to distinguish blends, so these are the best guesses. ...
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/Grim/OLD/grim/ar_lamps.html -- 6.1 Кб -- 21.08.2003
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228. http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/Grim/OLD/grim/dither.txt
... If you have centered the object on the chip the pattern will put the object in each of the 4 quadrants of the chip. ... They are the offset in arcseconds for the x and y inst plane offset, the exposure time in seconds, and the number of exposures at each position. ... A point about offsets should be made here. The dither program uses absolute instrument plane offsets, so you should use object plane offsets to center up on the chip so that the script starts from where you centered up. ...
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/Grim/OLD/grim/dither.txt -- 4.3 Кб -- 21.08.2003
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229. grimspecprimer
... This page is intended to give the reader who is unfamiliar with the spectroscopy mode of GRIM enough basic information to be able to effectively plan observations, somewhere between a FAQ and the actual User Manual. ... A slit is placed in the optical path near the grism; otherwise, slitless spectroscopy can be done in the "objective prism" mode. ... Keep this in mind if you chose to dither the position of your object along the slit in order to make a master sky frame for calibration purposes. ...
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/Grim/OLD/grim/grimspecprimer.html -- 17.3 Кб -- 21.08.2003
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230. http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/Grim/OLD/grim/manual.ps
... 25 5.2 Neutral Density Filters . 25 5.3 Filters . ... Thus, the read noise is larger than the Poisson noise for exposures of less than about 2500 DN. ... 48 Name Meaning IMTITLE Image name (without the .fits, .hhh, or .hhd extension) OPENTIME Exposure time \Gamma 0:901 seconds (see x3.2) STARTIME Time exposure started (local time ) STOPTIME Time exposure stopped (local time ) UT Time exposure was commanded (UTC) LT Time exposure was commanded (local time ) UTDATE Date of ...
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/Grim/OLD/grim/manual.ps -- 1555.1 Кб -- 21.08.2003
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231. GRIM II Spectroscopy
On 19/20 October 1995 we used GRIM II to attempt spectroscopy of the 2.3 micron CO absorption band in stellar clusters. ... Read Noise Our typical backgrounds in 60s were about 100 DN (about 500 e), and so for faint objects our noise is utterly dominated by the read noise of about 110 e. We can think of three ways to improve this situation: integrate longer; reduce the read noise; or implement multiple reads. ... Flats The quartz lamps were too dim for flats. ...
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/Grim/OLD/grim/msg.2.html -- 5.3 Кб -- 21.08.2003
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232. OLD
Last modified .
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/Grim/OLD/index.html -- 1.2 Кб -- 02.05.2008
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233. http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/Grim/PDF/GrimII_Users_manual.pdf
... Thus, the read noise is larger than the Poisson noise for exposures of less than about 2500 DN. ... Name IMTITLE OPENTIME STARTIME STOPTIME UT LT UTDATE RA DEC EPOCH RAOFF DECOFF X Y ROTATION ZD AIRMASS MODE SCALE GFILTER Meaning Image name (without the .fits, .hhh,or .hhd extension) Exposure time ; 0:901 seconds (see x3.2) Time exposure started (local time ) Time exposure stopped (local time ) Time exposure was commanded (UTC) Time exposure was commanded (local time ) Date...
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/Grim/PDF/GrimII_Users_manual.pdf -- 624.0 Кб -- 22.07.2004
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234. Astrophysical Research Consortium - Apache Point Observatory
. Contact Webmaster for web page errors, corrections, ommisions, and/or additions. This page last updated: June 28, 2006 - JMD . This page last checked: October 26, 2004 - JMD .
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/NA1Guider.html -- 4.6 Кб -- 30.04.2009
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235. Astrophysical Research Consortium - Apache Point Observatory
. Contact Webmaster for web page errors, corrections, ommisions, and/or additions. This page last updated: June 28, 2006 - JMD . This page last checked: October 26, 2004 - JMD . Basic information to know... Echelle Slit Viewer: October 4, 2002 . Echelle Slit Viewer: October 4, 2002 .
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/NA1Guider/NA1Guider_usage.html -- 6.2 Кб -- 29.06.2006
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236. http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/NA1Guider/PDF/Marconi_CCD77.pdf
... The Marconi Applied Technologies back thinning process ensures high quantum efficiency over a wide range of wavelengths. ... 2002 Marconi Applied Technologies CCD77-00 Back Illuminated, page 9 FUNCTIONAL DIAGRAM Output A 1 OGA SWA A12 A11 A13 8029 16 A13 A12 A11 A13 A12 A11 A13 TGA TGA B12 B11 B13 B12 B11 B13 A12 A11 A13 A12 A11 A13 A12 A11 A13 A12 A11 A13 TGA B12 B11 B13 B12 B11 B13 TGA B12 B11 B13 B12 B11 B13 TGA B12 B11 B13 B12 B11 ...
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/NA1Guider/PDF/Marconi_CCD77.pdf -- 101.2 Кб -- 02.07.2004
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237. Astrophysical Research Consortium - Apache Point Observatory
. Contact Webmaster for web page errors, corrections, ommisions, and/or additions. This page last updated: June 28, 2006 - JMD . This page last checked: October 26, 2004 - JMD .
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/NA2Guider.html -- 4.8 Кб -- 30.04.2009
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238. Astrophysical Research Consortium - Apache Point Observatory
. Contact Webmaster for web page errors, corrections, ommisions, and/or additions. This page last updated: June 28, 2006 - JMD . This page last checked: October 27, 2004 - JMD . Basic information to know...
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/NA2Guider/NA2Guider_datareduction.html -- 4.1 Кб -- 29.06.2006
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239. Astrophysical Research Consortium - Apache Point Observatory
. Contact Webmaster for web page errors, corrections, ommisions, and/or additions. This page last updated: June 28, 2006 - JMD . This page last checked: October 27, 2004 - JMD . Basic information to know...
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/NA2Guider/NA2Guider_obsspec_info.html -- 4.1 Кб -- 29.06.2006
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240. Astrophysical Research Consortium - Apache Point Observatory
... Installed filters (User selectable): R, I, B, Red + ND2, Clear, U, V (all filters are Johnson-Cousins) . ... For a plot of all filters, click here . 0 - Bessell R . ... The only filter requiring a focus offset is the ND2 + R filter which will be measured on the sky. ... The red filter attached to the ND2 in position 6 is not the same as the Bessell R. Number 6 is an RG610 red glass filter ( Rolyn 65.1355 ) for the 610 nm cut-on. ... Focus . ... Guider Mechanical Controller (filter and focus) . ...
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Ссылки http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/NA2Guider/NA2Guider_old_information.html -- 11.1 Кб -- 29.06.2006
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