David's Astronomy Pages
CCD Images - Session 126 (2006-05-12)

Previous Imaging Session
Images
(S125)
  Home
Images
Sessions
  Home
Home
Page
  Next Imaging Session
Images (S127)
 
Objects Session Notes
Bullet RT Aur - Cepheid Variable
Bullet Comet 73/P Schwassmann-Wachmann 3-B (Fragment B)
Bullet Comet 73/P Schwassmann-Wachmann 3-C (Fragment C)
Bullet NGC 6871 - Open Cluster
Bullet MPL 2006 GY2 - Near Earth Object
Bullet NGC 3953 - Spiral Galaxy & Supernova 2006bp
- 3.5 hour session
- main aim was to record further images of comet 73/P SW-3 and recent supernova - 2006bp, 2006bt.
- opportunity was taken to acquire sequence of images of asteroid 2006 GY2, which is passing by Earth 
(6.5 LD at closest approach). 
- moon at 100% phase (full moon)
(too low to image)
- More Notes

RT Aur - Cepheid Variable

As part of an ongoing project examining the variability in the cepheid star RT Aur,  further image sets of the variable were recorded at the commencement  of the session.  Image sets comprised  7 sequences of  images (3 x 2s V & 3 x 5s B) alternated between RT Aur & reference star SAO 78571.  These and previous image sets from previous session from Feb-May 2006 were analyzed.  Results are shown in graphs below.  Data is consistent with a regular variation with a period of 3.728115 days.  Quality control for this variable is less tight than ideal due to the faintness of the available check star (particularly in B).  Data quality, particularly in B Band, suffered from increasing Airmass through May, which hampered ability to confirm B-V trends through the magnitude minima. Nevertheless the light curve for RT Auriga has been reasonably well constrained by the total dataset. 
 [ More Notes on RT Aur Analysis & Results ].

V Band Magnitude estimates for RT Aug 
Reference Star SAO 78571 (mag +5.75)
Check Star GSC 2422:1019 (mag +10.36) 

Image
   
Light Curve for RT Aug 
Magnitude and colour variation in RT Auriga based on observations 
on 12 observing sessions between 2006-02-10 and 2006-05-12
[ Reference Star SAO 78571 ]
Image
   

RT Aur (Auriga) 
Previous picture from 2006-02-10 

Image
 CCD Image (50% size) 
60 sec exposure, 1x1 binning, C Filter 
2006-02-10 22:11h UT (#114120)

Back to Top


Comet 73/P Schwassmann-Wachmann 3-B  (Fragment B)

Comet 73/P Schwassmann-Wachmann 3-B 
(Fragment B passing through Star Field in Cygnus)

Image
CCD Image
4 x 1 min exposure, 2x2 binning, C Filter
Aligned on comet & Stacked (Average combine)
Log Scale (1135-5500 ADU)
2006-05-12 22:44h UT (#126046-49)
 
Comet 73/P Schwassmann-Wachmann 3-B 
Fragment B
 Linear Scale
(grey colour)
Log Scale
(false colour, inverse spectrum)
 Image Image
   
Log Scale
(false colour, cold)
Rotational Gradient 
(5 deg)
Image  Image
CCD Image (50% size)
15 x 30s, 1x1 binning, C Filter
Aligned on comet nucleus & stacked
2006-05-12 23:08h UT (#126058-72) 

Back to Top


Comet 73/P Schwassmann-Wachmann 3-C  (Fragment C)

Comet 73/P Schwassmann-Wachmann 3-C 
(Fragment C passing through Star Field in Vulpecula)

Image
False Colour CCD Image
4 x 1 min exposure, 2x2 binning, C Filter
Aligned on comet & Stacked (Average combine)
(1115-5500 ADU)
2006-05-12 23:18h UT (#126074-77)

 

Comet 73/P Schwassmann-Wachmann 3-C
30s sec exposures at 2 minutes intervals
showing motion of fragment C over 10 minutes

Image
False Colour CCD Image
5 x 30 sec min exposure, 2x2 binning, C Filter
Aligned on stars & stacked (Average combine)
2006-05-12 23:22h to 23:32 UT (#126078-94)

 

Comet 73/P Schwassmann-Wachmann 3-C
(Fragment C)

Image
CCD Image
5 x 30 sec min exposure, 2x2 binning, C Filter
Aligned on stars & stacked (Average combine)
2006-05-12 23:32 UT (#126093-97)

 

Comet 73/P Schwassmann-Wachmann 3-C
(Fragment C, Rotational Gradient (5 deg)

Image
CCD Image
(details as above)

Back to Top


NGC 6871 - Open Cluster

NGC 6871 (Cygnus)

Image
CCD Image Mosaic (3 x 4), (50% size)
60s exposure (average combine), 2x2 binning, C Filter 
2006-05-12 23:57 hUT (#126106-17)
[ Full Size ]

 

NGC 6871 (Cygnus) - detail

Image
Part of CCD Image Mosaic (3 x 4)
60s exposure (average combine), 2x2 binning, C Filter 
2006-05-12 23:57 hUT (#126106-17)

Back to Top


MPL 2006 GY2 - Near Earth Object

2006 GY2  - Minor Planet   (passing through star field in Ursa Major)
[ This asteroid of c. 800m diameter is due to pass by earth 
on 2006-05-16 at 6.7 Lunar Distance (LD) ]
Asteroid appears trailed due to its 
relatively rapid motion  (~ 20 arc sec/min)

Image
Image
Annotated CCD Images
60 sec exposure, 2x2 binning, C Filter
Top : 2006-05-13 00:23h UT (#126127)
Bottom : 2006-05-13 00:54h UT (#126155)
 
CCD Image Composite showing motion of 2006 GY2 over a 40 minute period
Image 
Annotated CCD Image - Negative
19 x 60 sec exposure (average combine), with 60 sec gaps , 2x2 binning, C Filter
2006-05-13  00:21h to 01:01h UT (#126125-61)
 
CCD Image Composite showing path of 2006 GY2 over a 40 minute period
Image 
Annotated CCD Image 
37 x 60 sec exposure (average combine), 2x2 binning, C Filter
2006-05-13  00:21h to 01:01hUT (#126125-61)

Back to Top


NGC 3953 - Spiral Galaxy & Supernova 2006bp

NGC 3953 (Ursa Major) with SN 2006bp
2006bp was discovered 2006/04/09.60 by Koichi Itagaki
(Rochester Supernova site | Discovery Image | Reference Image)

Image below (2006-05-13.062) was taken 34 days after discovery. 
Estimated magnitude of 2006bp  is  +14.6 (C filter). 

Image
Annotated CCD Image
5 x 60s exposure (average combine), 2x2 binning, C Filter 
2006-05-13 01:29 hUT (#126183-87)

Back to Top


This Web Page: CCD Images - Session 126 (2006-05-12)
Last Updated : 2015-05-16
Site Owner : David Richards
Home Page : David's Astronomy Web Site