NGC1624

Observing Log
Date of observation: November 18, 2001
Time at end of first CCD image 1:49 PST
Time at end of last CCD image 2:03 PST
Observing location: home observatory
Fastar CCD Imaging session

Sky Conditions
Seeing: FWHM 2
Transparency: magnitude 13.6 star is a peak value 549.049 with a background of 150.817.
Seeing and transparency is based on Star GSC 2859:1353, RA: 03h 06m 07.6s Dec: +44°17'39" (Epoch 2000).
Star is at column 166.154 and row 44.1 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
NGC1624 is a 13.0 magnitude open cluster with nebulosity
Location in image: center
Location RA: 03h 05m 48.0s Dec: +44°23'00" (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: 21 X 30 seconds images stacked together.

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

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