Class information for:
Level 1: INSTRUMENTATION SPECTROGRAPHS//ASTRON RUMENT GRP//FOUR MIRROR

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
20049 478 15.0 45%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
10 4 OPTICS//PHYSICS, PARTICLES & FIELDS//PHYSICS, MULTIDISCIPLINARY 1131262
217 3       OPTICS//APPLIED OPTICS//OPTICAL ENGINEERING 50829
1405 2             SITE TESTING//ATMOSPHERIC EFFECTS//INSTRUMENTATION ADAPTIVE OPTICS 8044
20049 1                   INSTRUMENTATION SPECTROGRAPHS//ASTRON RUMENT GRP//FOUR MIRROR 478

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 INSTRUMENTATION SPECTROGRAPHS authKW 411135 13% 11% 61
2 ASTRON RUMENT GRP address 191641 1% 100% 3
3 FOUR MIRROR authKW 191641 1% 100% 3
4 SCHIEFSPIEGLER authKW 191641 1% 100% 3
5 SPECTROGRAPHS authKW 154574 2% 22% 11
6 ANASTIGMAT authKW 146009 1% 57% 4
7 FIBER SPECTRA authKW 143730 1% 75% 3
8 NIAOT address 143730 1% 75% 3
9 INSTRUMENTATION ACTIVE OPTICS authKW 127761 0% 100% 2
10 LAMOST address 127761 0% 100% 2

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 Astronomy & Astrophysics 11459 64% 0% 304
2 Optics 2141 28% 0% 136
3 Spectroscopy 100 5% 0% 22
4 Instruments & Instrumentation 10 2% 0% 11
5 Engineering, Aerospace 8 1% 0% 4
6 Physics, Multidisciplinary 2 3% 0% 13
7 Microscopy 0 0% 0% 1
8 Engineering, General 0 1% 0% 3
9 Remote Sensing 0 0% 0% 1
10 Multidisciplinary Sciences -0 0% 0% 1

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 ASTRON RUMENT GRP 191641 1% 100% 3
2 NIAOT 143730 1% 75% 3
3 LAMOST 127761 0% 100% 2
4 UK GEMINI PROJECT OFF 127761 0% 100% 2
5 STAT SIGNAL PROC 120513 2% 19% 10
6 GRATING TECHNOL 106461 1% 33% 5
7 ASTRON RUMENTAT GRP 76647 1% 20% 6
8 ADV RUMENTAT 64305 3% 8% 12
9 BAIRRO NACOES 63880 0% 100% 1
10 CUERPO COMPUTAC OPT 63880 0% 100% 1

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 63092 15% 1% 72
2 NEW ASTRONOMY REVIEWS 18865 4% 2% 19
3 EXPERIMENTAL ASTRONOMY 11413 2% 2% 11
4 ASTROPHYSICAL BULLETIN 7971 1% 2% 7
5 MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 7702 15% 0% 73
6 ASTRONOMISCHE NACHRICHTEN 6111 4% 1% 18
7 JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS 5861 1% 3% 3
8 OBSERVATORY 5608 2% 1% 8
9 APPLIED OPTICS 4177 10% 0% 48
10 PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA 4052 2% 1% 8

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 INSTRUMENTATION SPECTROGRAPHS 411135 13% 11% 61 Search INSTRUMENTATION+SPECTROGRAPHS Search INSTRUMENTATION+SPECTROGRAPHS
2 FOUR MIRROR 191641 1% 100% 3 Search FOUR+MIRROR Search FOUR+MIRROR
3 SCHIEFSPIEGLER 191641 1% 100% 3 Search SCHIEFSPIEGLER Search SCHIEFSPIEGLER
4 SPECTROGRAPHS 154574 2% 22% 11 Search SPECTROGRAPHS Search SPECTROGRAPHS
5 ANASTIGMAT 146009 1% 57% 4 Search ANASTIGMAT Search ANASTIGMAT
6 FIBER SPECTRA 143730 1% 75% 3 Search FIBER+SPECTRA Search FIBER+SPECTRA
7 INSTRUMENTATION ACTIVE OPTICS 127761 0% 100% 2 Search INSTRUMENTATION+ACTIVE+OPTICS Search INSTRUMENTATION+ACTIVE+OPTICS
8 ASTRONOMICAL OPTICS 122841 1% 38% 5 Search ASTRONOMICAL+OPTICS Search ASTRONOMICAL+OPTICS
9 FOCAL RATIO DEGRADATION 85173 0% 67% 2 Search FOCAL+RATIO+DEGRADATION Search FOCAL+RATIO+DEGRADATION
10 SPECTRUM EXTRACTION 85173 0% 67% 2 Search SPECTRUM+EXTRACTION Search SPECTRUM+EXTRACTION

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref.
in cl.		 Shr. of ref. in
cl.		 Citations
1 SU, DQ , LIANG, M , YUAN, XY , BAI, H , CUI, XQ , (2016) A SUGGESTED 12-M TELESCOPE OPTICAL SYSTEM CONFIGURATION FOR CHINA.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. VOL. 460. ISSUE 2. P. 2286 -2295 10 91% 1
2 SRIVASTAVA, MK , RAMAPRAKASH, AN , DAS, HK , BURSE, MP , CHORDIA, PA , KOHOK, AA , RAJARSHI, CV , (2011) DESIGN AND DEVELOPMENT OF AN OPTICAL-FIBRE-BASED INTEGRAL FIELD UNIT (IFU) ON THE IUCAA 2-M TELESCOPE.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. VOL. 418. ISSUE 2. P. 1127-1137 11 85% 0
3 BAHRAMI, M , GONCHAROV, AV , (2010) ALL-SPHERICAL CATADIOPTRIC TELESCOPE DESIGN FOR WIDE-FIELD IMAGING.APPLIED OPTICS. VOL. 49. ISSUE 30. P. 5705 -5712 10 83% 5
4 MARSH, JP , MAR, DJ , JAFFE, DT , (2007) PRODUCTION AND EVALUATION OF SILICON IMMERSION GRATINGS FOR INFRARED ASTRONOMY.APPLIED OPTICS. VOL. 46. ISSUE 17. P. 3400 -3416 11 69% 41
5 LEE, D , ALLINGTON-SMITH, JR , (2000) AN EXPERIMENTAL INVESTIGATION OF IMMERSED GRATINGS.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. VOL. 312. ISSUE 1. P. 57-69 9 100% 12
6 ZHANG, SW , MI, XT , ZHANG, Q , JIRIGALANTU , FENG, SL , YU, HL , QI, XD , (2017) GROOVE SHAPE CHARACTERISTICS OF ECHELLE GRATINGS WITH HIGH DIFFRACTION EFFICIENCY.OPTICS COMMUNICATIONS. VOL. 387. ISSUE . P. 401 -404 8 73% 0
7 SU, DQ , JIA, P , LIU, GR , (2012) ATMOSPHERIC DISPERSION CORRECTOR FOR THE LARGE SKY AREA MULTI-OBJECT FIBRE SPECTROSCOPIC TELESCOPE.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. VOL. 419. ISSUE 4. P. 3406 -3413 7 88% 3
8 ZHU, J , YE, Z , (2012) A SKY-SUBTRACTION ALGORITHM FOR LAMOST USING TWO-DIMENSIONAL SKY-BACKGROUND MODELING.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA. VOL. 29. ISSUE 1. P. 78 -85 7 88% 1
9 SANDIN, C , BECKER, T , ROTH, MM , GERSSEN, J , MONREAL-IBERO, A , BOHM, P , WEILBACHER, P , (2010) P3D: A GENERAL DATA-REDUCTION TOOL FOR FIBER-FED INTEGRAL-FIELD SPECTROGRAPHS.ASTRONOMY & ASTROPHYSICS. VOL. 515. ISSUE . P. - 12 48% 26
10 POPPETT, CL , ALLINGTON-SMITH, JR , (2007) FIBRE SYSTEMS FOR FUTURE ASTRONOMY: ANOMALOUS WAVELENGTH-TEMPERATURE EFFECTS.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. VOL. 379. ISSUE 1. P. 143 -150 7 88% 9

Classes with closest relation at Level 1


Rank Class id link
1 30490 RADIOMETR PHYS//SCALAR WAVE FUNCTIONS//BOUNDARY VALUE THEORY
2 21070 PISTON ERROR//SPARSE APERTURE//SPARSE OPTICAL SYNTHETIC APERTURE
3 30414 DYSON//ESCOLA UNIV OPT OPTOMETRIA//IMAGING SPECTROMETER
4 28801 LIQUID MIRRORS//CHEM POB 653//METAL LIQUID LIKE FILMS
5 21932 AUTOMATIC LENS DESIGN//LENS MODULE//ZOOM LENS
6 13078 NONIMAGING OPTICS//FREEFORM LENS//CEDINT
7 24674 HYPERSPECTRAL IMAGING//DIGITAL STAINING//SPECTRAL SIMILARITY MAPPING
8 29567 ROBOTIC TELESCOPES//PHYS SECTOR//TELESCOPES
9 30771 ULTRAVIOLET ASTRONOMY//AEGORA GRP//AEGORA
10 12108 SITE TESTING//ATMOSPHERIC EFFECTS//SEEING

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