David's Astronomy Pages
CCD Images - Session 89 (2005-06-10)

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Images (S90)
Objects Session Notes
Bullet M40 - Double Star
Bullet NGC 4290 - Spiral Galaxy
Bullet Hubble Deep Field (HDF) - North
Bullet MCG-1-39-3 - Spiral Galaxy,  with Supernova 2005cf
Bullet M5 - Globular Cluster
- Night skies in Aberdeenshire, Scotland don't become astronomically dark in mid summer even at local midnight. However in a further attempt to see what still can be seen in June skies, and dispel the local 'wisdom' about not bothering to observe in May-June-July,  a 1h 25m observing session was held around local midnight.
- Imaging with CCD Camera showed that despite the twilight conditions it was still possible to record down to +17 Mag.
- Highlights of the session were images of a recently discovered Supernova 2005cf  and a colour image of the M5 globular cluster
- Seeing quality was generally good with FWHM values down to 4 arc secs.
- More Notes

M40 - Double Star

M40 (Ursa Major) 
CCD Image 
3x2 min (average combine), Clear filter
2005-06-09  23:48 h UT (#89004-06)
M40 and adjacent stars
(Despite the twilight sky, the image records stars down to 
magnitude to +17, total exposure time was 6 minutes)
CCD Image (as above)

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NGC 4290 - Spiral Galaxy 

NGC 4290 (Ursa Major)
(center NGC 4290 catalog mag +12.0)
right NGC 4284 catalog mag +13.6)
CCD Image , 
4 x 60 sec exposure (average combine), clear filter
2005-06-09  23:57 h UT (#89007-11)

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Hubble Deep Field (HDF) - North 

Hubble Deep Field (Ursa Major)
In December 1995 the Hubble Space Telescope assembled an image of a small 2x2' region in Ursa Major  
over the course of 10 consecutive days. Known as the Hubble Deep Field (HDF), it was was the deepest ever field 
taken at that time and showed tens of thousands of galaxies out to a distance of 13 billion light years.
 In a rather ambitious attempt, I tried to image the same area under less than  ideal sky conditions (ie
Scottish summer twilight skies). Although the image from the 16 minute (total) exposure reached to mag +17 
none of the faint galaxies in the HST image are visible.
CCD Image
8 x 2 mins (average combine), clear filter
2005-06-10  00:09 h UT (#89013-20)
Hubble Deep Field Image
(reduced from HST WFPC2 Mosaic
HST Gallery Image 

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MCG-1-39-3 Galaxy with Supernova 2005cf

MCG-1-39-3 Galaxy with Supernova 2005cf (Libra)
Supernova  2005cf, Measured Magnitude :  +13.5 (C), Measured Distance from host galaxy: 2' 07" 
UCAC 2.0  Stars : (1) mag + 13.6,  (2) mag +13.3
Image   Image
CCD Image,  6 x 2 mins (average combine) , clear filter
8" LX200 at f/10.3, ST-7e, CCDSoft/TheSky
Twilight Conditions, Aberdeenshire, UK
2005-06-10  00:28 h UT (#89023-28)
Notes :  MCG-1-39-3 catalog mag +14.7,  NGC 5917 catalog mag +13.2
Supernova 2005cf was discovered by Lick Observatory Supernova Search (USA) on 2005-05-28   
It is understood to be a bright Type Ia Supernova.   
[ See  2005cf Images at
Rochester Astronomy Site ]
[ See 2005cf Light Curve on SNWeb ]

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M5 - Globular Cluster

M5 (Serpens Caput)
CCD Colour Image (LRGB)
Luminance 3x20s (average), Blue 5x30s (average) with  x1.8 weighting
Green 3x30s (average), Red 3x30s (average)
2005-06-10  00:46 h UT (#89034-47)

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This Web Page: CCD Images - Session 89 (2005-06-10)
Last Updated : 2015-05-16
Site Owner : David Richards
Home Page : David's Astronomy Web Site