Herschel II INDEX - New




Observing Log
Date of observation: November 17, 2001
Time at end of first CCD image 9:13 PST
Time at end of last CCD image 9:34 PST
Observing location: home observatory
Fastar CCD Imaging session
Sky Conditions
Seeing: FWHM 2.55551
Transparency: magnitude 13.0 star is a peak value 881.074 with a background of 31.765.
Seeing and transparency is based on Star GSC 3310:2117, RA: 03h 03m 27.5s Dec: +4619'24" (Epoch 2000).
Star is at column 309.88 and row 309.848 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
NGC1169 is a 12.2 magnitude galaxy.
Location in image: center
Location RA: 03h 03m 35.0s Dec: +4623'04" (Epoch 2000)

Six other very small faint galaxies are in the image. See images below for three of them.

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.
Observation of UGC2496


DSS RealSky image of UGC2496 magnitude: 17.1 Spiral Galaxy (edge on) RA: 03h 02m 29.4s Dec: +4626'46" (Epoch 2000). Notice the other two galaxies top-left ( 2MASXi J0302392+462732 RA: 03h 02m 39.2s Dec: +4627'32" (Epoch 2000)) and top-right ( HFLLZOA G145.21-10.67 RA: 03h 02m 23.6s Dec: +4627'54" (Epoch 2000)). I used NASA/IPAC Extragalactic Database to identify these galaxies.

Cropped Fastar image of UGC2496 resmpled 2x to be closer to the DSS image scale to the left. This cropped image is located at the 2 o'clock position from NCG1169 and 40% from NGC1169 to the edge of the image. Star magnitudes reach 19.5 for the dim stars in the above cropped image.

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