Position angle	Resolutions	Offset stars	Dispersion refraction
Signal:Noise		Slit plot with SKYVIEW	Coordinate convertors

Position angle
Position angle and separation	Enter J2000 coordinates, allow formats (RA Dec): 18:10:00.84 -10:00:15.12 18 10 00.84 -10 00 15.12 18.1669h -10.0042 272.5035d -10.0042 #1   RA:   Dec: #2   RA:    Dec: Slit lengths of ING instruments (in arcmin): ACAM: 5.8, ISISB: 3.2, ISISR: 3.5, LIRIS: 4.2, IDS: 3.3.
Resolutions
Spectral resolution and resolving power	Instrument Dispersor (Blaze wav.) Detector ACAM V400   (Holo) AUXCAM AF2 R158B   (3600Å)R158R   (6500Å)R300B   (4000Å)R316R   (6500Å)R600B   (3900Å)R600R   (7000Å)R1200B   (4000Å)R1200R   (7200Å)H1800V   (5500Å)H2400B   (4000Å)echelle_3   (8830Å)echelle_4   (6623Å)echelle_5   (5298Å)echelle_6   (4415Å)echelle_7   (3784Å) REDPLUS4WHTWFC IDS R150V   (5250Å)R300V   (5460Å)R400B   (3900Å)R400V   (5100Å)R400R   (7250Å)R600R   (6700Å)R600IR   (10000Å)R632V   (5460Å)R831R   (7500Å)R900V   (5100Å)R1200U   (3500Å)R1200B   (4000Å)R1200Y   (6000Å)R1200R   (8000Å)H1800V   (5300Å)H2400B   (4000Å) EEV10REDPLUS2 INTEGRAL R158B   (3600Å)R158R   (6500Å)R300B   (4000Å)R316R   (6500Å)R600B   (3900Å)R600R   (7000Å)R1200B   (4000Å)R1200R   (7200Å)H1800V   (5500Å)H2400B   (4000Å) REDPLUS4WHTWFC ISISB R158B   (3600Å)R300B   (4000Å)R600B   (3900Å)R1200B   (4000Å)H2400B   (Holo) EEV12 ISISR R158R   (6500Å)R316R   (6500Å)R600R   (7000Å)R1200R   (7200Å) REDPLUS LIRIS lr_zj   (12090Å)lr_hk   (19035Å)hr_j   (12630Å)hr_h   (16515Å)hr_k   (22345Å) LIRIS Slit width: arcsec (leave blank for a list of values) Wavelength: Å
Offset stars
Search	Enter J2000 coordinates in sexagesimal (e.g. 18:00:01.00, 18 00 01.00) or decimal format (18.0h, 270.004166667): RA: Dec: Maximum B magnitude: Search radius: arcmin. Max. radius: 20 (WHT), 8 (INT). Catalog: SIMBADUSNO UCAC3USNO-A2.02MASS PSCSDSSTycho 2PPMGSC More information: ING blind-offset stars requirements. Other catalogs: MAST Portal | USNO URAT Parallax Catalog.
Dispersion refraction
Angle of refraction	Plot of angle of refraction vs wavelength for different values or airmass.
Parallactic angle	Plot of parallactic angle vs hour angle. Parallactic angle calculator (including instrument limits and refraction): RA: Dec: J2000.0 Format can be either sexagesimal (e.g. 18:00:01.00, 18 00 01.00) or decimal (e.g. 18.0h, 270.004166667). Start UT:   JanFebMarAprMayJunJulAugSepOctNovDec 01020304050607080910111213141516171819202122232425262728293031    : hh:mm Time span: hours.   Step: Time (minutes) Parallactic angle (°)   Size: Instrument: ACAMAF2ISISLIRISIDSWFC Sky position angle (North to East): ° DIMM seeing: 0.50.60.70.80.91.01.11.21.31.41.51.61.7 arcsec Central wavelength: Å Other predictors: GTC atmospheric refraction calculator.
Signal-to-noise ratio
SIGNAL	SIGNAL can calculate the signal-to-noise ratio for a given instrument configuration and a number of parameters, that include slit width, target magnitude and observing conditions (seeing, airmass, sky brightness).
Coordinate convertors
Tools	ING's degree to sexagesimal covertor.