David's Astronomy Pages (Sky Tours)
Apr (1) - Virgo Cluster Galaxies

Image collection based on the sky tour "Classifying galaxies in the Virgo Cluster" featured in the Apr 2012 edition of Astronomy Now. Comprising highlights from the rich galaxy hunting grounds of Virgo and Coma Berencies.

Bullet  1. M87 - E0 Elliptical Galaxy (NGC 4486)
Bullet  2. M59 - E5 Elliptical Galaxy (NGC 4621)
Bullet  3. NGC 3628 - Spiral Galaxy (NGC 4382) 
Bullet  4. NGC 4438 - SA0/Sa galaxy
Bullet  5. M91 - SBb(rs) Spiral Galaxy (NGC 4548)
Bullet  6. M100 - SAB(s)bc Spiral Galaxy (NGC 4321)
Bullet  7. M99 - SA(s)c Spiral Galaxy (Pinwheel Nebula, NGC 4254)
Bullet  8. NGC 4535 - SAB(s)c - Barred Spiral Galaxy
 

Notes - Hubble System (tuning fork)

Ellipticals E0 (spherical) to E7 (elongate) > S0 

Spirals S0  > Sa, Sb, Sc - Spirals (non-barred)
Spirals S0 > SBa, SBb, SBc - Spirals (barred)

 


1.   M87 - E0 Elliptical Galaxy (NGC 4486)

M87 (Virgo)
Image 
Annotated CCD  Image
3 x 180 sec exposure (summed), 2x2 binnimg, C Filter
2008-03-10  00:16 h UT (#275087-99)
 
M87 Jet - detail
Image
CCD  Image
Linear scaling
(Image details as above
(Insert at x2.5 size scaling)

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2.  M59 - E5 Elliptical Galaxy (NGC 4621)

M59 (Virgo)
Image 
CCD  Image, 5 x 60 sec exposure (summed)
Mid range brightened
2004-03-28  23:47 h UT (#64138-42)
8" LX200 classic + ST-7e

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3.   M85 - Lenticular or S0 Galaxy (NGC 4382)

M85 (Coma Berenices) 
Also two spiral galaxies NGC 4394 (extreme left) 
&  IC 3292 (extreme right)
Image
CCD Image
3 x 2 min (average combine),  C Filter
2004-12-11 06:47 h UT (#79055-57)
8" LX200 classic + ST-7e

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4.  NGC 4438 - SA0/Sa galaxy    (plus adjacent galaxy NGC 4435 -  The Eyes | The Nonet)

NGC 4438 & NGC 4435   (Virgo)
NGC 4435 : top     
NGC 4438 : bottom
Image 
CCD Image
(Linear Scale, 50% size reduction) 
3 x 120 sec exposure (average combine), 3x3 binning, C Filter 
2009-05-12 00:40h UT  (#368178-80)
12" LX200R  (at f/5.7) + ST-10XME
 
NGC 4438 & NGC 4435 - detail
 Image
CCD Image
Square root scale
Image details as above

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5.  M91 - SBb(rs) Spiral Galaxy (NGC 4548)

M91 (Coma Berenices)
Image 
CCD  Image
3 x 180 sec exposure (average combine), 2x2 binning, C Filter
2008-02-16 00:22 h UT (#264124-28)
8" LX200 classic + ST-7e

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6.  M100 - SAB(s)bc  Spiral Galaxy (NGC 4321)

M100 (Coma Berenices)
 Image
CCD Image
5 x 2 min exposure (average combine), 2x2 binning, C Filter 
2006-04-27 22:22h UT (#118081-86)
8" LX200 classic + ST-7e

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7.   M99 - SA(s)c  Spiral Galaxy (Pinwheel Nebula, NGC 4254)

M99 (Coma Berenices)
Image 
CCD Image (linear scale, cropped)
4 x 1 min exposure (average combine), 3x3 binning, C Filter
2009-11-27 06:02 h UT  (#400217-21)
12" LX200R  (at f/5.7) + ST-10XME

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8.  NGC 4535 - SAB(s)c - Barred Spiral Galaxy 

NGC 4535 / Herschel II-500 (Virgo)
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)
5 x 120s exposure (average combine), 3x3 binning, C Filter 
2015-04-17 23:29 hUT (#585066-70)
12" LX200R  (at f/10.4) + ST-10XME
[ Full Size Image (un-annotated]
  
NGC 4535 - detail
Image 
Negative CCD Image (50% size)
Image details as above
  

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