| Resource |
Description |
| AAVSO |
- Variable Star types
- Submitting Observations
-
|
| AAVSO Finder charts |
- Searchable Variable star finders at many scales
- Search by constellation
|
| USNO Data Service |
- Sunrise/set, Moonrise/set, Twilight times
- Phases of the Moon
- Eclipses and Transits
- Positions of the Sun and Moon
- MICA - GMST information, and coord calc
|
| Airmass Calc |
- Calculate Airmass (enter lat, long, elev, coords)
|
| Planets |
- Calculate planetary position for a specific date
|
| |
- Observatory Latitude and Longitude
|
| Julian Dates |
|
| Skyview |
|
| JPL SS Dynamics |
- Ephemeris Generator - planets, comets, asteroids
|
| Minor Planet Center |
- Lists of Asteroids, KBOs, Centaurs
- Lists of comets; name designations
- Ephemeris service
|
| Cartes du Ciel |
- Free Sky chart software
- Variable star predictions, logs
- Star Catalogs
|
SIMBAD
SIMBAD (mirror) |
- Astronomical Object locator
- Coordinates
- Finder Charts
|
| SBIG Instruments |
- Astronomical Instruments Sales
- Information about instruments
- QE Curves
|
| Landolt Stars |
- Photometric Standards
- Finders & Coords
- Mags & Colors
|
| GCVS |
- General Catalog of Variable Stars
|
VizieR
VizieR (mirror) |
- Astronomical Catalog Access
|
| Aladin Catalog |
- Catalogue Visualization tool
|
| NED |
- NASA/IPAC Extragalactic Database
|
| Subaru Vis Tool |
- Observing Target Visibility Tool
|
| |
|
