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2 Observations

The observations were performed with the 120 cm Newtonian telescope of the Observatoire de Haute-Provence, in three runs: April 1-11 2000, May 29-June 5 2000 and January 18-29 2001, noted below as run 1, 2 and 3. Tables 1 to 4 gives lists of the observed galaxies with some parameters relevant on the observing conditions. A CCD target Tek1024 is mounted in the camera, giving a field of view of $11.6\times 11.6$$^\prime$ for a pixel size of 24 microns or 0.68 $^{\prime \prime }$. The relatively large field is a favorable feature of this system for the observation of colour distributions in nearby galaxies. Less favourable are the rather poor seeing at the OHP, with the FWHM of star images usually in the 2-3 $^{\prime \prime }$ range, with values at 4 or more during periods of northern wind (mistral), and also the sky illumination by ever increasing urban lights.

The camera is unfortunately affected by the so-called "red-halo'' effect.

 
Table 1: A list of the observations. The dates refer to the begining of the night. Two values $W_{\rm o}$ and $W_{\rm i}$ are given for the frame FWHM (in $^{\prime \prime }$): the first is the original one; the second was attained after the treatment tending to equalize the FWHM of all 5 frames in a colour set, this at the value of the best one. Notes: 2974 mistral, interfering bright star; 3115 mistral; 3193 interfering bright star; 3605 mistral, 3607 also observed; 3608 NGC 3607 interfering.

NGC

Date F File Exp Sky $W_{\rm o}$ $W_{\rm i}$
2768 01/04/00 U t613 3000 21.50 2.32 2.14
id id B t614 600 21.71 2.22 2.11
id id V t615 300 20.59 2.14 -
id id R t616 240 19.93 2.29 2.14
id id i t617 240 18.86 2.36 2.15
2974 05/04/00 U t828 3000 20.75 5.10 4.10
id id B t830 600 21.47 4.63 4.05
id id V t829 300 20.54 4.04 -
id id R t831 240 20.11 4.58 -
id id i t832 240 18.47 4.23 -
3115 20/01/01 U p437 2400 20.45 5.28 3.96
id id B p438 600 21.35 4.12 3.74
id id V p439 300 20.44 3.81 -
id id R p440 200 19.93 3.86 -
id id i p441 160 18.74 3.78 -
3193 01/04/00 U t619 3000 21.09 3.11 -
id id B t620 600 21.60 3.23 -
id id V t621 300 20.78 3.26 -
id id R t622 240 20.03 2.90 -
id id i t623 240 19.27 2.75 -
3377 20/01/01 U p443 2300 21.10 3.64 2.81
id id B p444 600 21.72 3.02 2.69
id id V p445 300 20.72 2.73 -
id id R p446 200 20.16 2.80 -
id id i p447 160 18.85 2.76 -
3377 27/01/01 U p674 2500 20.73 3.62 2.75
id id B p675 600 21.45 2.96 2.67
id id V p676 250 20.47 2.70 -
id id R p677 160 29.96 2.78 -
id id i p678 130 18.68 2.71 -
3379 20/01/01 U p449 2500 21.28 3.96 2.90
id id B p450 600 21.86 3.29 2.84
id id V p451 250 20.89 2.91 -
id id R p452 160 20.32 3.11 -
id id i p453 130 19.07 2.99 -
3605 05/04/00 U t842 3000 21.16 4.62 4.05
id id B t843 600 21.73 4.13 -
id id V t844 300 20.76 3.93 -
id id R t845 240 20.35 3.78 -
id id i t846 240 19.35 3.88 -
3608 06/04/00 U t937 3000 21.04 3.44 2.71
id id B t938 600 21.77 2.90 2.71
id id V t939 300 20.79 2.82 2.67
id id R t940 240 20.29 2.79 2.74
id id i t941 240 19.25 2.69 -
3610 20/01/01 U p456 2500 21.39 2.99 2.49
id id B p457 600 21.99 3.11 2.51
id id V p458 250 21.07 2.71 2.44
id id R p459 160 20.49 2.51 -
id id i p460 130 19.21 2.75 2.43


 
Table 2: A list of the observations (continued). See conventions above. Notes: 4125 clouds; 4278 NGC 4283 also observed; 4387 mistral; 4406 (30/5) clouds; 4406 (31/5) mistral.
3613 20/01/01 U p462 2500 21.25 3.58 2.43
id id B p463 600 21.92 3.16 2.25
id id V p464 250 20.90 2.42 2.11
id id R p465 160 20.26 2.16 -
id id i p466 130 19.03 2.20 -
3640 07/04/00 U t040 3000 20.68 3.00 2.14
id id B t041 600 21.27 2.29 2.14
id id V t042 300 20.40 2.14 -
id id R t043 240 20.04 2.22 2.18
id id i t044 240 19.06 2.26 2.09
3872 06/04/00 U t953 3000 21.03 2.89 2.36
id id B t954 600 21.68 2.49 2.43
id id V t955 300 20.70 2.38 -
id id R t956 240 20.17 2.49 2.37
id id i t957 240 19.18 2.67 2.43
4125 21/01/01 U p521 2500 20.07 2.13 1.93
id id B p522 720 21.08 2.14 1.94
id id V p523 420 19.85 1.97 -
id id R p524 280 18.47 2.48 1.98
id id i p525 250 17.40 2.11 2.00
4261 21/01/01 U p527 2500 20.05 2.84 2.39
id id B p528 720 21.10 2.61 2.40
id id V p529 420 20.25 2.41 -
id id R p530 280 20.07 2.61 2.50
id id i p531 250 18.78 2.53 2.52
4278 25/01/01 U p600 2500 20.96 3.20 2.93
id id B p601 600 22.03 2.89 -
id id V p602 250 21.10 3.54 2.96
id id R p603 160 20.33 3.60 2.98
id id i p604 130 19.05 3.23 2.86
4365 25/01/01 U p606 2500 20.72 3.52 2.93
id id B p607 600 21.75 3.39 2.95
id id V p608 250 20.74 2.99 -
id id R p609 160 20.01 3.17 2.94
id id i p610 130 18.64 2.82 -
4374 01/04/00 U t629 3000 21.20 3.08 -
id id B t630 600 21.84 3.20 -
id id V t631 300 20.85 3.05 -
id id R t632 240 20.36 2.94 -
id id i t633 240 19.32 2.85 -
4387 05/04/00 U t856 3000 21.23 4.40 -
id id B t857 600 21.79 4.35 -
id id V t858 300 20.77 4.08 -
id id R t859 240 20.35 4.23 -
id id i t860 240 19.35 4.19 -
4406 30/05/00 U m606 2400 20.06 2.65 2.14
id id B m607 600 20.69 2.69 2.19
id id V m608 300 19.21 2.65 2.12
id id R m609 150 17.76 2.39 2.09
id id i m610 120 17.28 2.09 -
4406 31/05/00 U m616 2400 20.42 4.66 2.14
id id B m617 500 20.50 4.27 2.19
id id V m618 250 19.24 4.32 2.12
id id R m619 180 19.08 4.14 2.09
id id i m620 150 18.16 3.85 2.09



 
Table 3: A list of the observations (continued). See conventions above. Notes: 4551 NGC 4550 also observed; 4552 clouds.
4472 07/04/00 U t053 3000 20.98 2.43 2.29
id id B t054 600 21.53 2.49 2.30
id id V t055 300 20.60 2.24 -
id id R t056 120 20.16 2.37 -
id id i t057 120 19.09 2.32 -
4473 29/05/00 U m571 2700 20.73 2.88 -
id id B m572 600 21.61 3.01 -
id id V m573 300 20.70 2.99 -
id id R m574 180 20.22 2.99 -
id id i m575 150 18.99 2.88 -
4478 25/01/01 U p600 2500 21.00 3.56 2.58
id id B p601 600 21.59 3.64 2.65
id id V p602 250 20.62 3.12 2.48
id id R p603 160 19.92 3.11 2.54
id id i p604 130 18.62 2.52 2.86
4486 27/01/01 U p680 2500 20.86 4.35 3.67
id id B p681 600 21.67 3.98 3.59
id id V p682 250 20.70 3.92 3.71
id id R p683 160 20.15 4.03 3.72
id id i p684 130 18.92 3.62 -
4494 05/04/00 U t871 3000 21.18 3.62 3.30
id id B t872 600 21.66 3.31 -
id id V t873 300 20.56 3.47 -
id id R t874 240 20.04 3.47 -
id id i t875 240 18.92 3.26 -
4551 01/06/00 U m647 2400 20.69 2.48 2.16
id id B m648 500 21.44 2.58 2.15
id id V m649 250 20.59 2.40 2.19
id id R m650 180 20.33 2.16 -
id id i m651 150 19.43 2.28 2.13
4552 02/06/00 U m693 2400 19.67 2.92 2.49
id id B m694 500 21.16 2.79 2.48
id id V m695 250 20.26 2.50 -
id id R m696 180 19.90 2.82 2.51
id id i m697 150 18.96 2.99 2.50
4564 27/01/01 U p686 2500 20.86 3.92 3.41
id id B p687 600 21.59 3.44 -
id id V p688 250 20.70 3.56 -
id id R p689 160 20.00 3.85 3.47
id id i p690 130 18.62 3.53 -
4621 06/04/00 U t966 3000 20.75 2.85 -
id id B t967 600 21.50 2.81 -
id id V t968 300 20.39 3.05 2.77
id id R t971 120 19.68 2.82 -
id id i t972 120 19.24 2.88 -
4636 27/01/01 U p693 2263 20.68 3.86 3.11
id id B p694 662 20.78 3.61 3.06
id id V p695 300 20.25 3.35 2.99
id id R p696 210 19.47 3.47 2.99
id id i p697 180 18.22 3.05 -
4649 03/06/00 U m723 2400 20.15 2.57 -
id id B m724 500 21.20 2.62 -
id id V m725 250 20.18 2.52 -
id id R m726 180 19.82 2.52 -
id id i m727 150 18.80 2.34 -



 
Table 4: A list of the observations (continued). See conventions above. Notes: 5831 mistral and clouds.
5322 06/04/00 U t992 3000 20.95 2.91 2.52
id id B t993 600 21.72 2.64 2.64
id 07/04/00 V t994 300 20.69 2.93 2.53
id id R t080 240 20.62 1.80 2.51
id id i t081 240 19.49 1.87 2.51
5576 07/04/00 U t083 3000 20.73 2.31 -
id id B t084 600 21.22 2.52 2.31
id id V t085 300 20.38 2.67 2.30
id id R t086 240 19.87 2.48 2.26
id id i t087 240 18.79 2.39 -
5813 29/05/00 U m579 2400 20.95 3.47 3.18
id id B m580 500 21.66 3.28 3.18
id id V m581 250 20.71 3.19 -
id id R m582 180 20.28 3.09 -
id id i m583 150 19.13 3.16 -
5831 31/05/00 U m622 2400 20.43 3.89 3.28
id id B m623 500 20.66 4.07 3.28
id id V m624 250 18.84 3.33 -
id id R m625 180 18.06 3.23 -
id id i m626 150 16.73 3.19 -
5846 01/06/00 U m654 2400 20.66 2.55 2.11
id id B m655 500 21.28 2.74 2.16
id id V m656 250 20.38 2.07 -
id id R m657 180 20.08 2.28 2.11
id id i m658 150 19.08 2.33 2.11
5866 02/06/00 U m700 2400 21.16 2.43 1.93
id id B m701 500 21.76 2.26 1.88
id id V m702 250 20.80 1.84 -
id id R m703 180 20.36 1.91 -
id id i m704 150 19.37 1.82 -
5982 03/06/00 U m730 2400 20.89 2.20 2.00
id id B m731 500 21.15 2.30 2.06
id id V m732 250 20.46 2.07 -
id id R m733 180 20.18 2.11 -
id id i m734 150 19.13 2.33 2.06



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Copyright ESO 2002