Discoveries and Observations from
the Cordell-Lorenz Observatory


Comet Giacobini 205P fragments a and b. 
2008 10 01 UT
Stacks of 15 x 120 sec, 30 minutes per frame. 12 inch, f/2.5 telescope. Images by Dr. D. T. Durig and A. Takebuchi.


Comet Giacobini 205P fragments a and b.
2008 10 01 UT
Stacks of 15 x 120 sec, 30 minutes per frame. 12 inch, f/2.5 telescope. Images by Dr. D. T. Durig and A. Takebuchi.


Image uploaded on: 2008-10-01 06:43:18
Comet Giacobini 205P, fragments a, b, and c on 9/24 UT. Fragment b is near the parent body (fragment a) on the left of the image, but there are background MW stars interfering on several frames. Fragment c is on the right side of the image and can be seen in all four frames. Twelve inch (0.30 m f/2.5) telescope and stacking 24x120 seconds (48 minutes!) for each frame of the animation. Image by Dr. D. T. Durig.


Comet Giacobini 205P, fragments a, b, and c on 9/24 UT. Fragment b is near the parent body (fragment a) on the left of the image, but there are background MW stars interfering on several frames. Fragment c is on the right side of the image and can be seen in all four frames. Twelve inch (0.30 m f/2.5) telescope and stacking 24x120 seconds (48 minutes!) for each frame of the animation. Image by Dr. D. T. Durig.


Image uploaded on: 2008-09-24 01:51:25
Animation showing both  new companions to Comet Giacobini 205P. First companion is right next to the main comet body on the left side of the frame and the second companion is near the right edge of the frame. Twelve inch telescope (0.3 m @ f/2.5). Stacks are 30x120 seconds for a total of 60 minutes per frame, stacked on the motion vector of the main comet body. Images by Dr. D. T. Durig on 9/22 UT.


Animation showing both new companions to Comet Giacobini 205P. First companion is right next to the main comet body on the left side of the frame and the second companion is near the right edge of the frame. Twelve inch telescope (0.3 m @ f/2.5). Stacks are 30x120 seconds for a total of 60 minutes per frame, stacked on the motion vector of the main comet body. Images by Dr. D. T. Durig on 9/22 UT.




Image uploaded on: 2008-09-22 19:41:42
Precovery confirmation images of first new companion to Comet Giacobini 205P. Stacks are 50x30 sec for a total exposure of 25 minutes per frame. Images by Dr. D. T. Durig on 9/17 UT


Precovery confirmation images of first new companion to Comet Giacobini 205P. Stacks are 50x30 sec for a total exposure of 25 minutes per frame. Images by Dr. D. T. Durig on 9/17 UT



Image uploaded on: 2008-09-22 19:40:19
Discovery images of first new companion to Comet Giacobini 205P. Stacks are 15x120sec for a total time of 30 minutes per frame tracked on the motion of the parent comet body. Twelve inch telescope (0.30 m @ f/2.5). Images by Dr. D. T. Durig, Jake Sberna and Kyle Hatchett on 9/19 UT.


Discovery images of first new companion to Comet Giacobini 205P. Stacks are 15x120sec for a total time of 30 minutes per frame tracked on the motion of the parent comet body. Twelve inch telescope (0.30 m @ f/2.5). Images by Dr. D. T. Durig, Jake Sberna and Kyle Hatchett on 9/19 UT.


Image uploaded on: 2008-09-22 19:38:43
GRB 070223 field
85x120 sec for a total exposure of 170 min
limiting mag of ~21.8
No afterglow detected.
0.3 m f/3.4 SCT

Image by D. T. Durig, J. K. Bates, T. R. Williams and T. E. Stegall


GRB 070223 field
85x120 sec for a total exposure of 170 min
limiting mag of ~21.8
No afterglow detected.
0.3 m f/3.4 SCT

Image by D. T. Durig, J. K. Bates, T. R. Williams and T. E. Stegall


Image uploaded on: 2007-02-23 03:44:40

Comet C/2005 E2 McNaught
2007 02 19 UT
FOV 28x28 arc minutes
0.3 m SCT at f/9.7 
STL-1001E CCD
Three frame animation of 15x120 sec stacks ( each frame is a combined 30 minutes of exposure).
Tail goes almost to the edge of the frame.
Full tail length over 24 arc minutes !

Image by D. T. Durig
Cordell-Lorenz Observatory



Comet C/2005 E2 McNaught
2007 02 19 UT
FOV 28x28 arc minutes
0.3 m SCT at f/9.7
STL-1001E CCD
Three frame animation of 15x120 sec stacks ( each frame is a combined 30 minutes of exposure).
Tail goes almost to the edge of the frame.
Full tail length over 24 arc minutes !

Image by D. T. Durig
Cordell-Lorenz Observatory


Image uploaded on: 2007-02-19 03:53:20
We started imaging as soon as it was dark enough and we could get telescope focused, at 00 55 57 UT on 2007 01 31. We tok a total of 120 frames but only the first 75 good frames were used in the stack due to the low altitude of the last frames. We can clearly see the candidate from the VLT image but we get a position of RA 02 28 01.35 Dec +11 41 06.0 and a magnitude of 21.1 +/- 0.3 mag with a SNR of 4.6.

Image by D. T. Durig, C. C. Grigsby and J. M. David


We started imaging as soon as it was dark enough and we could get telescope focused, at 00 55 57 UT on 2007 01 31. We tok a total of 120 frames but only the first 75 good frames were used in the stack due to the low altitude of the last frames. We can clearly see the candidate from the VLT image but we get a position of RA 02 28 01.35 Dec +11 41 06.0 and a magnitude of 21.1 +/- 0.3 mag with a SNR of 4.6.

Image by D. T. Durig, C. C. Grigsby and J. M. David


Image uploaded on: 2007-01-30 23:57:21
GRB 070125
2007 01 29 UT
07 h 39 m 56 s UT mid exposure
21.5 +/- 0.2 mag
148 x 120 sec stacked image
Moon was bright so background looks bad, but afterglow is clealry detected at SNR 3.1

Image by D. T. Durig


GRB 070125
2007 01 29 UT
07 h 39 m 56 s UT mid exposure
21.5 +/- 0.2 mag
148 x 120 sec stacked image
Moon was bright so background looks bad, but afterglow is clealry detected at SNR 3.1

Image by D. T. Durig


Image uploaded on: 2007-01-29 04:59:44
GRB 070125
2007 01 27 
05 hr 42 min 49 sec UT
07 51 17.74 +31 09 04.1
120 x 120 sec 
for four hour total exposure
19.6 mag
half frame crop
Image by D. T. Durig, D. S. Hardage, and N. M. Haymond


GRB 070125
2007 01 27
05 hr 42 min 49 sec UT
07 51 17.74 +31 09 04.1
120 x 120 sec
for four hour total exposure
19.6 mag
half frame crop
Image by D. T. Durig, D. S. Hardage, and N. M. Haymond


Image uploaded on: 2007-01-27 02:34:08

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