|
This was my first viewing session at my new site in Aberdeenshire, and the first time I've used my ST7 CCD camera on a temporarily mounted telescope. My 8" SCT was set up on a tripod and roughly aligned on the Pole Star. This was sufficient for getting unguided exposures of 20 secs, but not any longer. My optical setup was slightly different to normal and at 2x2 binning the resulting image scale was 1.82 arc sec/pixel, compared to normal figure 1.78.
The session was also the first opportunity to use a newly purchased copy of TPoint Telescope Pointing Software (Software Bisque). This proved useful for locating a series of faint galaxies in and around Pegasus, which might have been difficult to locate with just a rough polar alignment. (TPoint indicated that the scope's polar alignment had been out by 1.1 deg in azimuth and out by 0.6 deg in altitude).
A sky brightness
survey was conducted which demonstrated that the sky at my new observing site in
Aberdeenshire was definitely darker than my previous observing site in Dorset,
confirming visual observations.
Goto Notes from Session S00054 (2003-11-21)
Back to Top
M76 (Perseus) |
CCD Image, 6 x 20s exposures (median) 2003-10-17 21:40 to 21:43h UT (#53092-97) 11.6 x 7.8 arc sec |
Back to Top
Back to Top
NGC 281 (Cassiopeia) |
CCD Image, 6 x 20 sec exposure (summed) 2003-10-17 21:49 to 21:51h UT (#53104-09) FOV 11.6 x 7.8 arc sec |
Image details as above Smoothed and Contrast Adjusted |
Back to Top
M33 (Triangulum) |
CCD Image composite, 2 images, 5 x 20 sec exposure (median) Smoothed and Contrast Adjusted 2003-10-17 23:02 to 23:10 h UT (#53184-88 & #53191-96) |
Back to Top
Back to Top
NGC 7320 (Andromeda) |
CCD Image, 10 x 20 sec exposure (median) 2003-10-17 22:12 to 22:17h UT (#53131-40) |
Back to Top
Back to Top
IC 1392, (catalog mag +12.5) , UGC 11775 (catalog mag +14.1 ) (Cygnus) |
CCD Image, 5 x 20s exposures (median) 2003-10-17 22:33 to 22:35h UT (#52154-58) 11.3 x 7.5 arc sec |
Back to Top
Back to Top
NGC 206, Emission Knot in M31 (Andromeda) |
CCD Image, 6 x 20 sec exposure (summed) Smoothed and Sharpened 2003-10-17 21:05 to 21:09 h UT (#53049-58) 11.6 x 7.8 arc sec |
Back to Top
Back to Top
Back to Top
A sky brightness survey was conducted which demonstrated that the sky at my new observing site in Aberdeenshire was definitely darker than my previous observing site in Dorset, confirming visual observations. A preliminary assessment is that sky is nearly 1 mag per sq. arc sec darker at the new site.
Back to Top
This Web Page: | CCD Images - Session 53 (2003-10-17) |
Last Updated : | 2023-01-24 |
Site Owner : | David Richards |
Home Page : | David's Astronomy Web Site |