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Dark Ridge Observatory (DRO)



Latitude and longitude: 32:48:12N, 105:28:29W (+32.80333, -105.4747)
Elevation: 7100ft (2164m)

Site manager: Tom Smith

Internet access:  DSL

Weather statistics: 30% photometric, 40% usable, 30% cloudy

Typical good seasons: April-June and September-October

Cohen/Menke Observatory (CMO)

This page is under construction!

Cerro Tololo International Observatory (CTIO)


Latitude and longitude: -30:10:20 , 70:48:00W
Elevation: 2100m
Site manager: CTIO

Internet access: T1

Weather statistics: 60% photometric, 30% usable 10% cloudy
Typical good seasons: Spring, Summer, Fall

Bright Star Monitor Stations

The Bright Star Monitor stations are a subset of the AAVSOnet. They offer members an opportunity to do CCD multi-filter observing of stars from 2.0 to 13.6 in Vmag with robotically controlled telescopes that are located from New Hampshire to Australia.  Images are automatically calibrated and are provided to the user for analysis.  They can also be directly forwarded to a VPHOT account. 


Bareket Observatory

This page is still under construction!

AAVSOnet Online Discussion Forum

We have created an online forum for discussion of AAVSOnet topics. Arne will moderate the forums, post announcements regarding AAVSOnet systems and answer any questions you have. If you have any interest or questions about AAVSOnet, please stop by. No question is too silly.

AAVSO Photometric All-Sky Survey: Data Release 1

AAVSO Photometric All-Sky Survey (APASS)

Data Release 1

September 10, 2010

Arne Henden (AAVSO), Matthew Templeton (AAVSO), Dirk Terrell (SwRI), Tom C. Smith (DRO), Stephen Levine (Lowell), Doug Welch (McMaster)


AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484