31K
Observer: Antonio Jose Cidadao
Location: Oeiras, Portugal
Date: March 21, 1996 02:52 - 05:29 UT
40K
32K
39K
First Image:
Notes: Tricolour (RGB) image Comet 1996B2; total of 20 images of 30 sec.=
each=20
in "track-and-accumulate" mode (tracking was performed on the comet=
=20
nucleus). CCD field shown is about 15' x 10'.
When a more aggressive processing was used in order to subtract=20
the coma (insert), various "jets" were seen more clearly. This insert
is also present in all other pictures obtained this day.
Member of A.P.A.A. (Associa=E7=E3o Portuguesa de Astr=F3nomos=
Amadores)
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Telescope: Schmidt-Cassegrin, Meade LX200, 10", f/10, equatorially mounted
Focal reducer (f/6.3): yes
Camera: SBIG ST6
Filter wheel (CFW6-A): yes
Filters: IR blocking + RGB
Exposure: red (4x30 sec)120s sec.
green (8x30 sec) 240 sec.
blue (8x30 sec) 240 sec.
Date: 03/21/96 (red exposure beginning at 02h42min UT)
(green exposure beginning at 02h47min UT)
(blue exposure beninning at 02h 55min UT)
Site: Oeiras, Portugal ("roof-top" observatory)
Image Proc. Software: CCDOPS; PhotoShop
Second image:
Notes: Comet 1996B2; 18 images of 30 sec. each in "track-and-accumulate"=
mode
(tracking was performed on the comet nucleus).
Original image was obtained with a 135mm (f/1.8) telephoto lens
and a SBIG ST6 CCD camera, piggy-back mounted on a 10" LX200
=20
Insert is the same that appears on the first image.
CCD field is 3.5 x 2.75 degrees.
Member of A.P.A.A. (Associacao Portuguesa de Astronomos Amadores)
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-
Camera: SBIG ST6
Filter wheel (CFW6-A): no
Filters: none
Exposure: 540 sec.
Date: 03/21/96 (beginning at 05h 29min UT)
Site: Oeiras, Portugal ("roof-top" observatory)
Image Proc. Software: CCDOPS; WinMiPS; PhotoShop
Third image:
Notes: Comet 1996B2; 30 images of 30 sec. each in "track-and-accumulate"=
mode
(tracking was performed on the comet nucleus).
Original image was obtained with a 50mm (f/1.4) photographic lens
and a SBIG ST6 CCD camera, piggy-back mounted on a 10" LX200
=20
Insert is the same that appears on the first image.
Member of A.P.A.A. (Associacao Portuguesa de Astronomos Amadores)
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Camera: SBIG ST6
Filter wheel (CFW6-A): no
Filters: none
Exposure: 900 sec.
Date: 03/21/96 (beginning at 03h 46min UT)
Site: Oeiras, Portugal ("roof-top" observatory)
Image Proc. Software: CCDOPS; WinMiPS; PhotoShop
Fourth image:
Notes: Comet 1996B2; 30 images of 30 sec. each in "track-and-accumulate"=
mode
(tracking was performed on the comet nucleus).
Original image was obtained with a 28mm (f/3.5) photographic lens
and a SBIG ST6 CCD camera, piggy-back mounted on a 10" LX200
=20
Insert is the same that appears on the first image.
Member of A.P.A.A. (Associacao Portuguesa de Astronomos Amadores)
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Camera: SBIG ST6
Filter wheel (CFW6-A): no
Filters: none
Exposure: 900 sec.
Date: 03/21/96 (beginning at 04h 39min UT)
Site: Oeiras, Portugal ("roof-top" observatory)
Image Proc. Software: CCDOPS; WinMiPS; PhotoShop
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Antonio Jose Cidadao
Rua D. Antonio Luis de Menezes, No9, 3A, phone: +351-1-4412192
S. Juliao da Barra, Oeiras,
2780 Oeiras
PORTUGAL e-mail:=
a.cidadao@telepac.pt
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