Page 2 ( Last level.)

A few members pictures

Nova in M31 Discovery image South up and East to the right. Exposure time : 3 X 4 minutes 0.61m f/3.8 MX516 Date : 31.Oct 2000 Time : 21.10 UT. Odd Trondal

Jupiter. Exposure time : 0.1 seconds Date : 24 Jan 2000 Pixcell 255 CCD and 0.21m f/20. Torbjørn Fredriksen

Saturn. Exposure time : 0.1 seconds Date : 24 Jan 2000 Pixcell 255 CCD and 0.21m f/20. Torbjørn Fredriksen

IC 1470 in Cepheus?. Only the center is visible. Distance ? ly. Field : 7' X 5' Exposure time : 6 minutes ( In each color ). 0.61m f/3.9 MX5_16 CCD Date : 17. October 1999 Time : 21.00 UT. Odd Trondal

Comet C/1999 H1 ( Lee ). Distance from Sun : 276 mill km. Mag. : 9.5 Integration time : 8 X 1 min. MX5_16 and 0.61m f/3.9 telescope. Date : 14. October 1999 Time : 22:41 UT Odd Trondal

Comet C/1999 S4 ( LINEAR ). ( Round dot at right. ) Distance from Sun : 615 mill km. Mag. : 15.8 Size : 4" Integration time : 6 X 6 min. MX5_16 and 0.61m f/3.9 telescope. Date : 15. October 1999 Time : 03:44 UT Odd Trondal

NGC 891 in Andromeda. Size : 12' x 1' Distance : 45 mill ly. Integration time : 15 min. ST-7 and 10" SC f/4.8 telescope. Date : 13. September 1999 Alf Jacob Nilsen

Io's shadow and Callisto just south of Jupiter. ( South up ) Europa and Ganymede to the lower right. Exposure time : 0.03 seconds Date : 12 September 1999 Time : 23.57 UT. 61 cm f/3.25 MX5 CCD Odd Trondal

Europa's shadow. ( South up ) Exposure time : 0.3 seconds Date : 23 August 1999 Time : 02.17 UT. 25 cm f/20 ST-4 CCD Odd Trondal

Saturn. Exposure time : 0.3 seconds Date : 23 August 1999 Time : 02.38 UT. 25 cm f/20 ST-4 CCD Odd trondal

M 27 in Vulpecula. Magnitude central * : 13.5 Size : 8' x 5' Distance : 900 ly. Integration time : 6 min in each RGB. MX5_16 CCD and 0.61m f/3.2 telescope. Date : 31. August 1999 Time ( UT ) : 21.35 ( North up, East left. ) Odd Trondal

NGC 2841. Date : 6. May 1999 Time ( UT ) : 21.30 Measured magnitude : 13.6 Integration time : 4 x 15 seconds. Pixcell 255 CCD and 0.21m f/4.7 telescope. Field : 12' x 12' ( North up, East left. ) Torbjørn Fredriksen

Pluto to the left middle. R.A. 16h 40m 15s Dec. -10 11' 30" Ophiuchus Date : 29.April 1999 Time : 01:12 Integration time : 2 x 20 seconds. ST-4 CCD and 0.61m f/2.2 telescope. Field : 7' x 7' ( North upper right, East upper left. ) Odd Trondal

Pluto in center of picture. R.A. 16h 40m 06s Dec. -10 11' 28" Date : 1.May 1999 Time : 00:52 Integration time : 2 x 25 seconds. ST-4 CCD and 0.61m f/2.2 telescope. Field : 7' x 7' ( North is up, East left. )

Occultation of Aldebaran from Groruddalen Oslo 22.March 1999
by Odd Trondal..

I used the 0.61m Cassegrain telescope with a ST-4 CCD Camera. My original optical setup converts the f/15 focus to f/2.2
Aldebaran is in the beginning far from the moons limb. The dark part of the moon is enlightened by the Earth.

After occultation, note the black spot on the stars position. The CCD like us, was completely blinded.

Integration time : 0.01 - 0.3 seconds

Occultation is at Universal Time : 18.35.04

Waiting for reappearance. Universal Time : 19.27.20 Integration time : 0.01 seconds

Aldebaran is 4" from the limb at UT : 19.35.26 ( Reappearance approx. 8 seconds before. ) Integration time : 0.01 seconds

Universal Time : 19.36.07 Integration time : 0.01 seconds

Ring less Saturn by Odd Trondal August 10th 1995 .

The rings of Saturn seem to disappear every 14.7 years on average when the earth crosses the ring plane. The next time is in 2009, but Saturn will not be well placed in a dark sky until the 2038 - 2039 crossing.
I remember observing with the 0.32m and Saturn showed only some weak belts and the darker shadow of the ring. Then 3 days later I saw this impressive sharp mathematical glowing line which was the return of the ring system.

Saturn 10.August 1995 Universal Time : 23.30, Telescope : 0.32m f/35 Exposure time and film: 1 sec. on Ektachrome 200 Digitized by Odd Trondal.

I also remember the back lit dark ring in December 1995, when the sun was shining on the top of the ring system and we could observe the other side.



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