NGC1582

Observing Log
Date of observation: November 18, 2001
Time at end of first CCD image 12:27 PST
Time at end of last CCD image 12:48 PST
Observing location: home observatory
Fastar CCD Imaging session

Sky Conditions
Seeing: FWHM 2.74655
Transparency: magnitude 14.2 star is a peak value 393.604 with a background of 131.779.
Seeing and transparency is based on Star GSC 2892:1396, RA: 04h 31m 31.1s Dec: +43°54'20" (Epoch 2000).
Star is at column 411.064 and row 187.545 in the image.
For Sun set, astronomical twilight end, Moon rise or set, astronomical twilight begin and Sun rise refer to dark sky.

Observation Notes
NGC1582 is a large open cluster not easly seen from the background field stars
Location in image: center
Location RA: 04h 32m 00.0s Dec: +43°51'00" (Epoch 2000)

Image size is 41 arc minutes wide by 31 arc minutes high with an image resolution of 3.8 arc sec per pixel.
Image orientation: north is the top, west is the right, east is the left and south is the bottom.

Additional Information on NGC Objects
SEDS Interactive NGC Catalog Online
NGC/IC Project

Observing Equipment

Celestron C-8 Schmidt-Cassegrain telescope with Fastar lens accessory and SBIG ST-237 CCD Camera (8" optical tube, focal length 406mm at f/1.95)
CCD image time: 31 X 30 seconds images stacked together.

Use Test patterns to calibrate monitor brightness, contrast, height and width

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