:All ()

()Vis

()Faint

()B

()V

()R

()I

()U

()J

()H

()K

()CV

()CR

()TB

()TG

()TR

()SU

()SG

()SR

()SI

()SZ

()RJ

()IJ

()STU

()STV

()STB

()STY

()STHBW

()STHBN

()MA

()MB

()MI

()NA

()Blue-Vis

()Green-Vis

()Yellow-Vis

()Orange

()Red-Vis

()ZS

()Y

()HA

()HAC

()CBB

Spectra

Vis

Faint

B

V

R

I

U

J

H

K

CV

CR

TB

TG

TR

SU

SG

SR

SI

SZ

RJ

IJ

STU

STV

STB

STY

STHBW

STHBN

MA

MB

MI

NA

BLUE

GREEN

YELLOW

ORANGE

RED

ZS

Y

HA

HAC

CBB

Latest Observation

X

Highlighting and Showing Contributor's Symbols

X

Highlighting - You may select a single contributor, via the adjacent to their observer code. The selected contributor symbols will then be highlighted with the symbol: (The highlighted contributor can be changed at any time.)

Contributor Symbols show/hide To select specific contributor's symbols to show, first uncheck :All Contributors. This will then hide all symbols for all contributors. Now select the checkbox adjacent to each contributor's observer code whose symbols you want to view.

Toggle Contributor Button CODE When a contributor's symbols are checked for viewing, a toggle button will be placed at the right of the plot. Toggle the button to show/hide that contributor's symbols.

Note: Only those symbols whose bands are selected for viewing will be visible.

Observation Data

X

ID#
Magnitude Type
Name
JD
UTC
Magnitude
Uncertainty
Band
Obstype
Comp
CMag
Comp2/Check
KMag
Airmass
Charts
Comment Code
Software
Transformed
Comments
Digitizer
ADS Reference
Observer Code
Affiliation
Credit

Your username:
Report Discrepancy

Mean Points & Curve

Curve: none Linear Smooth Smoother Smoothest

Select Mean

Bin Size(Julian Days):

: Mean Error Bars

This Light Curve's Preferences

X

Date preference
:	Julian Date
:	Calendar Date
:Requested Time Span From: To:
Magnitude range Minimum Value: Maximum Value: reset   change
Plot preferences
:	Show Grid
:	Show Error Bars
Uncertain Value... > 0.00 (12,345) > 0.05 (10,345) > 0.10 (8,345) > 0.50 (3,345) > 1.00 (1,345)
Additional data sets
:	APASS Data
:	Etc.
Link static light curve ? :
Link interactive light curve ? :

Zoom & Observation Data

X

The Zoom creates a rectangle that expands the plot to show only the symbols enclosed within the rectangle.

Zooming In When the 'Zoom' button is clicked, a cross hair will appear at the cursor. (Toggle the 'Zoom' button to cancel.) Click to locate the rectangle's upper-left corner. The rectangle will appear with an attached drag-dot. The rectangle, with its drag-dot, can be moved. Move the drag-dot until the rectangle encloses the desired symbols. Releasing the drag-dot will expand the rectangle to fill the plot area.

To step back through previous zoomed areas, select the 'Back' button.
- Slide Zoom View - You may use the green left/right arrow buttons to slide the current view. Toggle the arrow button to move the view.

Plot Another Curve

X

Your Star History
Star Name:
:All Bands      :Select Bands
Standardized Magnitude Differential Magnitude
Julian Day Calendar Date: yyyy/mm/dd
From Date:
To Date:
Plot Previous:	Days All:
Observer(s):	?

? Send Cancel

Returned Data

X

If a star request returns over 20,000 observations, the features: Preferences, Box, Mean, Annotate Print, and Contributor's List are disabled.
Truncated Time Span - The timeline shown is automatically reduced if no observations are present at the extremeties of the requested time span. For Julian Dates, this can be reset under Preferences.
Error Messages - Some requests will result in an error message:

No Data Found	Either there are no observations for the time span, or the AAVSO data request exceeded its maximum size(256MB).
Single observation: cannot plot.	The LCG cannot plot a single observation
Database Temporarily Out of Service	For some reason the AAVSO database is not available
Selected Bands not found.	The bands chosen for this star are not available during the requested time span

Plot Observer(s)

X

You may plot only those observations of one or more observers. Include observer code(s), with comma-separated values for more than a single observer.

Annotate Data In Print Click on symbols to add/remove their data box to your print. Move the data boxes as desired.
cancel
(Print Size: Landscape + Tabloid)

All Bands:
Vis	B	V	R	I	U	J	H	K	CV
CR	TB	TG	TR	SU	SG	SR	SI	SZ	RJ
IJ	STU	STV	STB	STY	STHBW	STHBN	MA	MB	MI
NA	Blue	Green	Yellow	Orange	Red	ZS	Y	HA	HAC
CBB

Note: Some features disabled because more than 20,000 observations were requested. (Click to hide)

Link Static Light Curve

X

A Static light curve displays only the curve and symbols. The viewer has no selections. This URL is the address to this current light curve. You may use this address to call this curve directly. It can also be placed as link address in other applications, such as journals or reports. You may also use this format to call your own static light curve. You can change the following ✱values: https://www.aavso.org/LCGv2/static.htm? DateFormat=Julian (or Calendar) &RequestedBands=Vis,V,R (or, blank for all bands) &Grid=true (or false) &view=api.delim &ident=V482 CYG (Star Name) &fromjd=2457201 (Julian Start Day) &tojd=2457931 (Julian End Day) &delimiter=@@@ ✱The URL and values are Case Sensitive.

Link Interactive Light Curve

X

An Interactive light curve includes the viewer selections as shown herein. This URL is the address to this current light curve. You may use this address to call this curve directly. It can also be placed as link address in other applications, such as journals or reports. You may also use this format to call your own static light curve. You can change the following ✱values: https://www.aavso.org/LCGv2/index.htm? DateFormat=Julian (or Calendar) &RequestedBands=Vis,V,R (or, blank for all bands) &view=api.delim &ident=V482 CYG (Star Name) &fromjd=2457201 (Julian Start Day) &tojd=2457931 (Julian End Day) &delimiter=@@@ ✱The URL and values are Case Sensitive.