Comet
C/2012 F6 (Lemmon)
2013/01/13
2013/02/18 2013/05/31
2013/06/01
2013/06/12
2013/06/30
2013/07/04 2013/08/04
2013 Jan 13
|
Time Stamp |
2013/01/13
20:29:46 UTC
- 22:25:30 UTC |
|
Place |
Nhựt Thúng Pâu Observatory,
Luogang, Canton, China |
|
Optics |
APO Mamiya 200 mm
f/2.8 lens set to f/5.6 |
|
Camera |
modified Canon EOS 500D
(ISO 400) |
|
Mount |
Astrotrac
TT320X-AG |
|
Exposure |
60 s x 109 frames |
|
Processing |
images stacked in IRIS
5.59 with standard calibration procedure performed; fixed with IRIS
5.59, Fitswork
V4.44 and Photoshop CS3 Extended; origin size and cropped; |
|
Comments
|
strong road lights.
The comet was only 15 degrees above the southern horizon.
For astrometry
and photometry results, please pay your visit
here.
|
Copyright © Man-To
Hui 2013/01/19
2013 Feb 18
|
Time Stamp |
2013/02/18 10:24:09 UTC
- 12:34:46 UTC |
|
Processing |
Images stacked in IRIS
5.59 with standard calibration procedure performed in MaxIm DL V5; fixed with IRIS
5.59, Fitswork
V4.44 and Photoshop CS3 Extended; 0.25x resized and cropped and rotated
counterclockwise by ca. 32 deg. |
|
Comments
|
Collaboration
between Angus Lau and me. Images remotely taken by Angus and
processed and analyzed by me. Click on the above image to browse
the 0.5x resized image.
For astrometry
and photometry results, please pay your visit
here.
|
Copyright © Man-To
Hui 2013/03/01
2013 May 31
|
Time Stamp |
2013/05/31 18:37:49 UTC
- 20:18:28 UTC |
|
Place |
Nhựt Thúng Pâu Observatory,
Luogang, Canton, China |
|
Optics |
APO Mamiya 200 mm
f/2.8 lens set to f/5.6 |
|
Camera |
modified Canon EOS 500D
(ISO 400) |
|
Mount |
Astrotrac
TT320X-AG |
|
Exposure |
90 s x 65 frames |
|
Processing |
Images stacked with standard calibration procedure performed in IRIS
5.59, further processed in Fitswork
V4.44 and Photoshop CS3 Extended; 0.5x resized and cropped. |
|
Comments
|
Strong
moonlight. Photographing had to be paused by clouds.
For astrometry
and photometry results, please visit
here.
|
Copyright © Man-To
Hui 2013/06/08
2013 Jun 01
|
Time Stamp |
2013/06/01 19:03:28 UTC
- 20:58:43 UTC |
|
Place |
Nhựt Thúng Pâu Observatory,
Luogang, Canton, China |
|
Optics |
APO Mamiya 200 mm
f/2.8 lens set to f/5.6 |
|
Camera |
modified Canon EOS 500D
(ISO 400) |
|
Mount |
Astrotrac
TT320X-AG |
|
Exposure |
90 s x 71 frames |
|
Processing |
Images stacked with standard calibration procedure performed in IRIS
5.59, further processed in Fitswork
V4.44 and Photoshop CS3 Extended; 0.5x resized and cropped. |
|
Comments
|
Strong
moonlight. For astrometry
and photometry results, please visit
here.
|
Copyright © Man-To
Hui 2013/06/08
2013 Jun 12
|
Time Stamp |
2013/06/12
17:38:55 UTC - 19:22:12 UTC |
|
Place |
Nhựt Thúng Pâu Observatory,
Luogang, Canton, China |
|
Optics |
APO Mamiya 200 mm
f/2.8 lens set to f/5.6 |
|
Camera |
modified Canon EOS 500D
(ISO 400) |
|
Mount |
Astrotrac
TT320X-AG |
|
Exposure |
90 s x 57 frames |
|
Processing |
Images stacked in
average method with standard calibration procedure performed in IRIS
5.59, further processed in Fitswork
V4.44 and Photoshop CS3 Extended; 0.5x resized and cropped. |
|
Comments
|
Capture had to
be paused by invading clouds. Some of the images were influenced
by clouds. For astrometry
and photometry results, please visit
here.
|
|
Processing |
The same sequence but
stacked in median method; 0.5x resized and cropped. |
Copyright © Man-To
Hui 2013/06/14
2013 Jun 30
|
Time Stamp |
2013/06/30
16:59:18 UTC - 20:55:38 UTC |
|
Place |
Nhựt Thúng Pâu Observatory,
Luogang, Canton, China |
|
Optics |
APO Mamiya 200 mm
f/2.8 lens set to f/5.6 |
|
Camera |
modified Canon EOS 500D |
|
Mount |
Astrotrac
TT320X-AG |
|
Exposure |
ISO 400 90-s x 99 frames,
ISO 3200 90-s x 40 frames |
|
Processing |
Images stacked in
median method with standard calibration procedure performed in IRIS
5.59, further processed in Fitswork
V4.44 and Photoshop CS3 Extended; original size but cropped. |
|
Comments
|
The 40 frames
in ISO 3200 were mistakenly captured, yet they were still usable. Some of the images were influenced
by clouds. A bright 8.9m star was situated too close to the
comet, and only median combination of the images reveals the
comet well. No astrometry and photometry for this observation
session due to the interference from the star.
|
|
Processing |
The same images stacked in
average method with standard calibration procedure performed and
registration on the field stars in IRIS
5.59, further processed in Fitswork
V4.44 and Photoshop CS3 Extended; |
|
Comments
|
The comet
happened to be in rendezvous with open cluster NGC 7789 in
Cassiopeia. The comet appears trailed in this image, however,
the close encounter with the star resulted that the star
seemingly disguised as the optocenter of the comet. For 0.5x
resized resolution please click
here.
|
Copyright © Man-To
Hui 2013/07/03
2013 Jul 04
|
Time Stamp |
2013/07/04
17:30:30 UTC - 20:49:11 UTC |
|
Place |
Nhựt Thúng Pâu Observatory,
Luogang, Canton, China |
|
Optics |
APO Mamiya 200 mm
f/2.8 lens set to f/5.6 |
|
Camera |
modified Canon EOS 500D |
|
Mount |
Astrotrac
TT320X-AG |
|
Exposure |
ISO 800 90-s x 72 frames |
|
Processing |
Images stacked in
average method with standard calibration procedure performed in IRIS
5.59, further processed in Fitswork
V4.44 and Photoshop CS3 Extended; original size but cropped. |
|
Comments
|
Image scale:
4".96/pixel
Orientation:
-92°.4
For astrometry and photometry
see
here please.
|
|
Processing |
The same images stacked in
average method with standard calibration procedure performed and
registration on the field stars in IRIS
5.59, further processed in Fitswork
V4.44 and Photoshop CS3 Extended; |
|
Comments
|
The comet
was in rendezvous with open cluster NGC 7789 in
Cassiopeia. The comet appears trailed in this image. For 0.5x
resized resolution please click
here.
|
Copyright © Man-To
Hui 2013/08/05
2013 Aug 04
|
Time Stamp |
2013/08/04
15:16:13 UTC - 19:08:39 UTC |
|
Place |
Nhựt Thúng Pâu Observatory,
Luogang, Canton, China |
|
Optics |
APO Mamiya 200 mm
f/2.8 lens set to f/5.6 |
|
Camera |
modified Canon EOS 500D |
|
Mount |
Astrotrac
TT320X-AG |
|
Exposure |
ISO 800 105-s x
118 frames |
|
Processing |
Images stacked in
average method with standard calibration procedure performed in IRIS
5.59, further processed in Fitswork
V4.46 and Photoshop CS3 Extended; original size but cropped. |
|
Comments
|
For astrometry and photometry
see
here please.
|
Copyright © Man-To
Hui 2013/08/08
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