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CCD Images - Session 240 (2007-12-07)

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Images (S241)
 
Objects Session Notes
Bullet 29 Amphitrite - Minor Planet
Bullet NGC 1535 - Planetary Nebula (Cleopatra's Eye)
Bullet NGC 579 - Spiral Galaxy
Bullet NGC 2261 (Hubble's Variable Nebulae)
Bullet NGC 497 - Spiral Galaxy
Bullet 17P/Holmes - Comet
Bullet M42 - Bright Nebula (Great Nebula)
Bullet Astrometric & Photometric Monitoring
- SS Cyg, U Gem (dwarf nova)
- BL Lac (Blazar)
- U And (mira variable)
- RX And, RZ LMi, U Mon  (variables)
- RU Peg, Z And (variables)
- NGC 2782, NGC 4151 (Seyfert Galaxies)
- DX Cnc, 61 Cyg, Gliese 725, Gliese 1245, Groombridge 34, CN Leo (Wolf 359) (Nearby Stars)
- Evening session (7.1hr), operated under automated control for majority of session.
Problem maintaining focus through session, unclear if this was caused by temperature change, seeing deterioration or mirror movement.
CCD operation of -20 degC (at 56% average cooling). 
- main objective of the session was to acquire an image mosaic of comet 17P/Holmes (now grown to larger than the apparent diameter of the moon)
-secondary objectives were to acquire images of certain selected stars of ongoing photometric and astrometric analysis
-opportunity was also taken to acquire gallery images of Caldwell 51 (IC 1613), and certain other comets and deep sky objects.
- An 81 point TPoint Mapping Run was conducted at the end of the session 
Notes 

29 Amphitrite - Minor Planet

 29 Amphitrite (moving through starfield in Aries)
Image
Annotated CCD Image (50% scale)
3 x 45 sec exposure (average combine), 1x1 binning, C Filter
2007-12-07  22:23h UT (#240041-43)

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NGC 1535 - Planetary Nebula (Cleopatra's Eye)

NGC 1535 (Eridanus)

Image

CCD Image (50% size)
3 x 30 sec, 1x1 binning, C Filter
2007-12-07 22:44hUT (#240062-64)

 

NGC 1535 - detail

Image

CCD Image (250% size)
3 x 30 sec, 1x1 binning, C Filter
2007-12-07 22:45hUT (#240064)

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NGC 579 - Spiral Galaxy

NGC 579 (Triangulum)

Image

CCD Image
3 x 120 sec, 2x2 binning, C Filter
2007-12-07 23:29hUT (#240102-04)

 

NGC 579 - detail with Supernova 2007pk

Image

CCD Image
120 sec, 2x2 binning, C Filter
2007-12-07 23:31hUT (#240104)

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NGC 2261 (Hubble's Variable Nebula)

NGC 2261  (Monoceros)
GCVS R Mon  - INa Variable
Image
CCD image,  
5 x 60 sec exposure (average combine)
2007-12-08  00:02h UT (#240134-38)
 
NGC 2261  - detail
Image
CCD image (250% size) 
Image details as above
 
Earlier Image of NGC 2261, 2003-01-24
Image
CCD image,  5 x 60 sec exposure
2003-01-24  00:01  to 00:06h UT (#41267-71)

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NGC 497 - Spiral Galaxy

NGC 497 (Cetus)

Image

CCD Image
3 x 180 sec, 2x2 binning, C Filter
2007-12-08 00:17hUT (#240143-45)

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17P/Holmes - Comet  

Comet 17P/Holmes - Central Detail 
( passing through starfield in Perseus)

Image
CCD Image (50% size), Linear Scale
7 x 60s exposure (av. combine), 1x1 binning, C Filter, 
2007-12-08 02:05h UT (#240221-27)

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M42 - Bright Nebula (Great Nebula)

M42 (Orion)

Image

CCD Image Mosaic (50% size)
120 sec, 2x2 binning, C Filter
2007-12-08 02:38hUT (#240241-52)

 

M42 - detail 

Image

CCD Image Mosaic (50% size)
Log Scale
Image details as above

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Astrometric and Photometric Monitoring

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This Web Page: CCD Images - Session 240  (2007-12-07)
Last Updated : 2015-05-16
Site Owner : David Richards
Home Page : David's Astronomy Web Site