BSM - Berry

Bright Star Monitor - Berry (BSM Berry)

This is the home of the Martin Bruce Berry Telescope [1]

[2]

Site
AAVSO Headquarters
Latitude and longitude: 42:23:15.6N 71:08:21.5W (42.387664, -71.139297)
Elevation: 20m
Site manager: Arne Henden
Internet access: T-1
Weather statistics: 60-100 useful nights per year
Typical good seasons: none

Telescope
Type: Astro-Tech AT72ED
Aperture: 72mm
Focal length: 432mm
F-ratio: 6
Focuser: Moonlite
Filter wheel: SBIG CFW-10
Camera: SBIG ST-8XME

Mount
Type: CGEM
Pointing accuracy: 4arcmin
Maximum unguided tracking: 30sec until polar alignment improved
Restrictions, if any: trees to north
Computer: Dell
Software: TheSky, MaxIm DL, ACP, ACP Scheduler
Telecope Advocate:

[3]Imaging
Typical seeing: better than 4arcsec
Best seeing: unknown
Vignetting: none
Scattered light: none
Image defects: one weak column

Camera
Filters: BVRIC
Exposure ratios/filter:
Pixel count: 1530x1024
Pixel scale: 4.34arcsec/pix
Field of view: 1.84x1.25 deg
Gain: 2.5 e-/ADU
Readnoise: 14 e-
Linearity (graph)
Full well: 53K ADU
Cosmetic defects: none
Dark current: low
Read time: 5sec
Shortest exposure: 0.2sec
Compressed image size: 1MB
QE response (graph)