August 2000 observing run at Valmeca observatory, UAI code 184

The run was carried out to observe miscallenous objects such as nice galaxies to asteroids search. For daytime observation, a telescope able to observe sun's corona was used and images recorded by a MAYA Kaf1600 CCD camera. During night time, the 600 mm telescope was used at F/8 cassegrain focus reduced to F/6, a MAYA 2K CCD camera was used.. (See picture below).

Daytime corner

Some images of solar protuberances

Unsharp masking was used. The magnetic structure is remarquable !

Nightime corner

DEEP SKY CORNER

To show how this telescope tracks with MCMT and Mpec correction enabled, the NGC 91 field was recorded using up to 5 minutes exposure time with open loop (no guiding) ! The telescope performed very well !!

CCD TH7899M 2x2K, sampling = 0.8"/pixel, 13x13 arcmin, T600, focal length = 3570 mm, f/D=6, NGC91 field.
8 UNGUIDED (1) exposures combined, (60s+60s+120s+120s+180s+180s+180s+180s), Total of 1080 sec exposure,
recorded by L. Bernasconi, C.Cavadore, C. Demeautis, S. Deconhiout.

6 combined exposures of NGC7331 (120s+180s+180s+180s+180s+180s) making a 1020 sec exposure. Unguided exposures. Same conditions as above.

4 combined exposures of M27 (300s+300s+300s+300s) making a 1020 sec exposure. Unguided exposures. Same conditions as above.

ASTEROIDS

A lot of new and already discovered asteroids have been observed.

2000-R37 Issued 2000 Sept. 9, 06:26 UT New identifications:

(18167) ????? 2000 PS27 2000 08 06 Valmeca Valmeca :

Asteroid 18167 needs to be assign to a REAL name, but has been quickly numbered !!

184 Valmeca Observatory, Puimichel
Observers C. Demeautis, C. Cavadore, S. Deconihout, L. Bernasconi
Measurers C. Demeautis
0.60-m f /6 reflector + CCD
GSC

New :

1987 QO 5 , 4, 1,0;
1998BY 6 , 4, 1, 0;
1998 DQ 13 , 9,2, 1; Lozere
1999EV 2 , 4, 1,0;
2000NQ 15 , 3, 1, 0;
2000 OU 2 , 9, 2, 2;
2000OV 2 , 9, 2, 2;
2000OB 7 , 4, 1, 0;
2000 PS 27 , 10, 2, 1;
2000 PP 30 , 11, 2, 2;
2000 QL 93 , 4,1, 0;
2000RU 9 , 4, 1, 0;

Already numbered :

(1012), 5, 1, 0; Sarema
(4685), 3, 1, 0; Karetnikov
(5406), 5, 1, 0; Jonjoseph
(7562), 7, 2, 2; Kagiroino-Oka
(8610), 4, 1, 0; Goldhaber
(8769), 11, 2, 2; Arctictern
(10424), 3, 1, 0; GAILLARD
(10807), 4, 1, 0; ?
(11725), 3, 1, 0; ?

An attempt to observe the new moon of Jupiter (discovered by the WFI with the 2.2meter at LaSilla and confirmed by the VLT) has been done, but failed cuased by a too bright moon nearby or too advanced twilight conditions.

(1) : UNGUIDED : means that the telescope was left tracking, but no guiding stars and RA/DEC corrections are used to compensate from tracking errors.