David's Astronomy Pages (Sky Tours)
Mar (1) - Spring Galaxies (a)

Image collection based on the sky tour "A Herschelian adventure" featured in the Mar 2012 edition of Astronomy Now.  Comprising spring galaxies that owe their discovery to Sir William Herschel.

Bullet  1. NGC 2903 - Spiral Galaxy
Bullet  2. NGC 3115 - Lenticular Galaxy (Spindle Galaxy)
Bullet  3. NGC 3628 - Spiral Galaxy 
Bullet  4. NGC 4038 / 4039 - Interacting Galaxy Pair ("The Antennae")
Bullet  5. NGC 4535 - Spiral Galaxy
Bullet  6. NGC 4567/4568 - spiral galaxies (Siamese Pair)
Bullet  7. NGC 4725 - Spiral Galaxy
Bullet  8. NGC 4565 - Spiral Galaxy (Needle Galaxy)
 

1.  NGC 2903 - Spiral Galaxy

NGC 2903  (Leo)
Image 
CCD Image (cropped)  
2 x 120sec exposure (average combine),  3x3 binning, C Filter
2011-02-26 23:16 h UT  (#458189-90)
12" LX200R  (at f/9.7) + ST-10XME
 
NGC 2903 - Earlier Image (2004-02-19)
Image
Colour CCD Image
Red 6x20s (av. smoothed), Green 6x20s (av, smoothed,
Blue 6x30s (av, smoothed), Luminance 12x10s (av)
2004-02-19  21:45 to 22:27 h UT (#58171-202)
8" LX200 classic + ST-7e

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2.  NGC 3115 - Lenticular Galaxy (Spindle Galaxy)

NGC 3115 (Sextans)
Image 
CCD Image, 5 x 30 sec exposure (median combine)
 clear filter
2004-03-15 22:04 to 22:08 h UT (#60022-26)
8" LX200 classic + ST-7e

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3.  NGC 3628 - Spiral Galaxy 

NGC 3628 (Leo)
Image 
CCD Image,  5 x 1 min exposure (summed)
clear filter
2004-03-21  22:59 to 22:04 h UT (#63110-14)
8" LX200 classic + ST-7e
  
Image 
CCD Colour Image,  LRGB 
Clear 5x1 min, Red 2x2min, Green 2x2min, Blue 2x2min
rotated
2004-03-21 22:59 to 23:25 h UT (#63110-24)
8" LX200 classic + ST-7e

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4.  NGC 4038 / 4039 - Interacting Galaxy Pair ("The Antennae")

NGC 4038/4039, ARP 244, Caldwell 60/61 (Corvus)
Image
CCD Image (50% size)
9 x 60 sec exposure (average combine), 3x3 binning, C Filter 
2011-04-05 23:33 h UT  (#466047-57)
12" LX200R  (at f/9.7) + ST-10XME
 
NGC 4038/4039 - detail
Image
CCD Image (100% size, cropped)
Image details as above
 
NGC 4038/4039 - detail
Image
Negative CCD Image (100% size, cropped)
Image details as above

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5.  NGC 4535 - Spiral Galaxy

NGC 4535 / Herschel II-500 (Virgo)
Image
CCD Image (50% size)
5 x 120s exposure (average combine), 3x3 binning, C Filter 
2015-04-17 22:21 hUT (#585066-70)
12" LX200R  (at f/10.4) + ST-10XME
[ Full Size Image]
  
NGC 4535 - detail
Image 
Negative CCD Image (50% size)
Image details as above
  
NGC 4535 and adjacent galaxies
NGC 4535 catalog mag +10.6, NGC 4535A  catalog mag ?
PGC 1340665 catalog mag +17.5,  PGC 1342675 catalog mag +18.5
Image 
Annotated CCD Image (100% size, cropped)
Image details as above
[ Full Size Image (un-annotated]

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6.  NGC 4567/4568 - spiral galaxies (Siamese Pair)

NGC 4567/4568 (Virgo)  
Image
Annotated CCD Image 
5 x 180s exposure, 2x2 binning, C Filter
2008-03-10 00:31h UT (#275093-97)
 
 NGC 4567/4568 - detail
Image 
False Colour CCD  Image
Square root scaling, Inverse Spectrum
(Image details as above)
  
Image 
Enlarged Negative CCD  Image  (200% size scale)
Square root scaling
(Image details as above)
 
 

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7.   NGC 4725 -  Spiral Galaxy

NGC 4725 / Herschel I-84 (Coma Berenices)
Image 
CCD Image (linear scale, 50% size)
5 x 90s sec exposure (average combine), 3x3 binning, C Filter
2015-04-20 23:56 h UT (#585082-88)
12" LX200R  (at f/10.4) + ST-10XME
[larger image, 75% size]
 
NGC 4725 - Detailed View
Image 
CCD Image (log scale, 50% size)
Image details as above

[larger false color image, square root scale, 75% size]

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8.  NGC 4565 - Spiral Galaxy (Needle Galaxy)

NGC 4565 / Caldwell 38  (Coma Berenices) 
Image 
CCD Image 
5 x 180s exposure (average combine), 2x2 binning, C filter,  
2007-03-03  23:46h UT (#180385-89)
 
NGC 4565 - detail
Image 
CCD Image (200% size)
Linear brightness scaling, Rotated & Cropped
Image details as above

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