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CCD Images - Session 167 (2006-12-19)

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Objects Session Notes
Bullet Part 1
Bullet C/2006 L1 (Garradd) - Comet
Bullet Astrometric & Photometric Monitoring
- HD 5501/5513 (eclipsing variables)
- SS Cyg (dwarf novae)
- BL Lac (BL Lac blazer)
- U And (mira variables)
- 61 Cyg (nearby star)
- TrES-2 (Exosolar Planet Sol)
Bullet Part 2
Bullet NGC 3718 - Spiral Galaxy
Bullet PGC 36774 & Surrounding Galaxies (part of Abell 1377)
Bullet NGC 3898 - Spiral Galaxy
Bullet NGC 4151 - Spiral Galaxy (Seyfet Galaxy)
Bullet NGC 4100 - Spiral Galaxy
Bullet NGC 4217 - Spiral Galaxy
Bullet NGC 4460 - Spiral Galaxy
Bullet NGC 4449 - Irregular Galaxy
Bullet NGC 4490 / NGC 4485 - Interacting Galaxies (Cocoon Nebula)
Bullet NGC 4625 - Spiral Galaxy
- 11.6 hr overnight session, operated under automated control. Very frosty conditions.
- CCD operation of -25 degC (at 62% average cooling). 
- main objective of the first half of the session was to acquire images for monitoring variable stars and a current comet in Auriga (C/2006 L1)
- main objective of second half was to acquire a series of gallery shots of NGC galaxies in Canes Venatici and Ursa Major.
- More Notes
-

C/2006 L1 (Garradd) - Comet

Comet C/2006 L1 (Garradd)
(passing through starfield in Auriga)

Image 

CCD Image 
5 x 60s exposure (average combine, aligned on comet),
  2x2 binning, C filter,  Linear scale
2006-12-19 20:40h UT (#167044-48)

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Astrometric and Photometric Monitoring

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NGC 3718 - Spiral Galaxy

NGC 3718 (Ursa Major)

Image
CCD Image
5 x 180s exposure (average combine), 2x2 binning, C Filter
2006-12-20 02:46h UT (#167414-18)

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PGC 36774 & Surrounding Galaxies (part of Abell 1377) 

PGC 36774 / part of Abell 1377 (Ursa Major)
(glare at bottom of image is from 5th mag star HIP 57477)

Image
CCD Image
5 x 180s exposure (average combine), 2x2 binning, C Filter
2006-12-20 03:07h UT (#167422-26)

Numerous galaxies in this image
PGC 36774 (catalog mag +15.4), PGC 36805 (catalog mag +15.4)
PGC 83507 (catalog mag +16.4), PGC 83509 (catalog mag +16.7),
PGC 36773 (catalog mag +15.8), PGC 36503, 
PGC 36747 (catalog mag +16.1), PGC 83497 (catalog mag +16.4),
PGC 83491 (catalog mag +16.6), PGC 83493 (catalog mag +16.2),
PGC 83496 (catalog mag +16.6)
Unlabelled PGC galaxies (catalog mags +17 to +18)

Image
Annotated CCD Image
images details as above

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NGC 3898 - Spiral Galaxy

NGC 3898 (Ursa Major)

Image
CCD Image
5 x 180s exposure (average combine), 2x2 binning, C Filter
2006-12-20 03:25h UT (#167430-34)

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NGC 4151 - Spiral Galaxy (Seyfet Galaxy)

NGC 4151 (Canes Venatici)
bright star to right is 8th mag star HIP 59295, 
smaller spiral galaxy to top left is NGC 4156

Image
CCD Image
5 x 180s exposure (average combine), 2x2 binning, C Filter
2006-12-20 03:42h UT (#167438-42)

 

NGC 4151 - potential reference stars

Image
Annonated CCD Image
60s exposure, 2x2 binning, V Filter
2006-12-20 03:55h UT (#167448)

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NGC 4100 - Spiral Galaxy

NGC 4100 (Ursa Major)
bright star to top right is 8th mag star
HIP 58992

Image
CCD Image
5 x 180s exposure (average combine), 2x2 binning, C Filter
2006-12-20 04:12h UT (#167455-59)

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NGC 4217 - Spiral Galaxy

NGC 4217 (Canes Venatici)
bright star with unusual glare pattern is the 7th mag star
HIP 59760

Image
CCD Image
4 x 180s exposure (average combine), 2x2 binning, C Filter
2006-12-20 04:52h UT (#167472-75)

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NGC 4460 - Spiral Galaxy

NGC 4460 (Canes Venatici)

Image
CCD Image
5 x 180s exposure (average combine), 2x2 binning, C Filter
2006-12-20 05:30h UT (#167487-91)

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NGC 4449 - Irregular Galaxy

NGC 4449 / Caldwell 21 (Canes Venatici)

Image
CCD Image
5 x 180s exposure (average combine), 2x2 binning, C Filter
2006-12-20 05:51h UT (#167495-99)

 

NGC 4449 - detail

Image 
CCD Image (250% size)
image details as above

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NGC 4490 / NGC 4485 - Interacting Galaxies (Cocoon Nebula)

NGC 4490 / NGC 4485 (Canes Venatici)
NGC 4490 - Cocoon Nebula (bottom), 
interacting with NGC 4485 (centre)

Image
CCD Image
5 x 180s exposure (average combine), 2x2 binning, C Filter
2006-12-20 06:30h UT (#167511-15)

 

NGC 4490 / NGC 4485 - detail

Image 
False Colour CCD Image 
Square root brightness scaling
image details as above

 

NGC 4490 / NGC 4485 - detail

Image 
False Colour CCD Image (150% size)
Square root brightness scaling, rotated.
image details as above

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NGC 4625 - Spiral Galaxy

NGC 4625 (Canes Venatici)
(two faint satellite tracks cross the image)

Image
CCD Image
5 x 180s exposure (average combine), 2x2 binning, C Filter
2006-12-20 06:50h UT (#167519-23)

NGC 4625 and adjacent NGC 4618

Image
CCD Image
5 x 180s exposure (average combine), 2x2 binning, C Filter
2006-12-20 07:10h UT (#167527-31)

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This Web Page: CCD Images - Session 167 (2006-12-19)
Last Updated : 2015-05-16
Site Owner : David Richards
Home Page : David's Astronomy Web Site